This 496-650 is probably the best oldschool-highpower-streetengine i know. 1) Old iron block & heads 2) over 600 hp anywhere over 5k 3) has vacuum and your granny can drive it...
Back in 1998 I built a 12.5 ls7 454 short block and installed merlin 269 iron oval ports, everyone laughed at me when I removed the iron rec ports. 12.5 compression Merlin iron oval ports I ported. Ultradyne solid roller. 263 271 660 680 108 lobe sep installed at 103 Dart oval port 1050 Dom. On a stuska dyno it did 726 hp and 640 torque. Hp peak was 6800. Car went from 10.60 at 128 to 10 flat and 136. The good old days, I ran that engine for ten years on street and track.
Mark built one of these for me; dyno tested it at his shop when I picked it up in Aug, 2020; just to give you an idea of his consistent builds, my dyno sheet looks like a carbon-copy of this one, only difference was mine at 663hp vs this 667.(I'll have to get my money back :) I have been to Mark's shop a few times and watched him build these, from the initial greasy used-core disassembly, through the final product; He's an ANIMAL when it comes to perfection.. close enough doesn't cut it; he also has the energy of ten normal guys as a one-man show. HIs paint jobs are almost too nice to hide under the hood! Like most others, I'm amazed at the power he gets from the factory stock "junk parts" we all threw away 40-50 years ago.!! You can't argue with the numbers and the consistency of his builds. Bad news is, my lazy ass still hasn't put it in the car..A '67 442 Olds... but I know it'll be a RELIABLE fun ride.
Awesome, I'm building a very similar engine myself. Only 30 over so its a 489, 781 heads (almost identical to 049), scat crank, 12cc dome pistons = 9.6:1 cr, Straub hyd roller cam 229/241 @ .600/.570, 1.7 roller rockers, air gap intake, Holley 950cfm double pumper. Can't wait to get it in my '73 Camaro!
Something I forgot; Mark usually starts his pulls at 4000rpm; notice the torque at 4200 already decreasing, I'm "guessing" it was making more somewhere below 4000; I realize once your into the pedal you're above 4K almost instantly, but I'd like to know what the torque really was.
Pretty amazing power and broad torque with a smallish cam and iron heads. I really didn’t think it would pull that high with only 315 cfm available at peak cam lift Very nice work I build a lot of strokers myself!
Nice clean shop and work, from the looks of the cylinder wipe down towel my guess is that there aint a single grain of contamination in there.. Although you dont tend to show it very much it looks like you are having fun doing high quality work, a true professional in every sense... Thank you and please keep rolling...
Great build and informative video. You guys really have those oval port heads figured out. Just wondering about how many hours do you spend just porting those heads?
Happy Easter praise God for Jesus grace Christ amen , and you for showing this vlog , I’m stock piling big block parts to build, speaking of heads , I don’t know if you already showed the different Selection of heads, can you show the shape of each port for each different em heads ??!! , thanks I picked up a big block two fours tunnel ram Edelbrock, and it is the TR2X, and it looks like a kinda square oval shape on the ports, I checked a HEI dis, and that’s not going to work , so I’m probably going to use a points type , or msd or Malory, anyway thanks BigAl California.
Gday guys. Really appreciate you spending the time doing these videos and sharing your expertise. They are awesome to watch. Have you built any Ford Cleveland engines? Would love to see a complete build of one of these. Keep up the great work and looking forward to seeing more vids.
Glad to see the details of building are awesome. so seems like plenty of torque and lower RPM Power available, would gearing /tire be less with the 4.25 stroke?
I have a 496 bbc with a pro flo 4 efi system installed on it and I'm trying to figure out the timing. Right now base timing is 22 and comes in at 1200rpm. Total timing is 36 and comes in at 3500. And my vacuum is at +15. When my total is running on my tablet and I'm cruising it says my timing is at 50, is that too high? And when I'm cruising in first gear and lightly step on the throttle it starts to buck around.. any tips?
Mark, great to see you guys back! It looks like the camera quality has been upgraded too! I'm always impressed with your cleanliness of parts and build at your shop, well done. Hey I've got a question, I live in Indiana so I'm not at altitude and E-85 is everywhere and I want to take advantage of every last drop of compression. If I build a 454 or 496 with a good iron GM head with upgraded valves how much compression could I get away with on E-85 for a street/strip engine, I mean every last bit. And would you use a flat top piston and deck the heads or use a domed piston. I've heard compression ratios from 12-14.5 but I want to ask an actual engine builder. Thanks again and I can't wait for more videos!
Thanks! I've never run E85 before, so I don't think I'am qualified to answer your question, I do want to try it on my 327 truck, the fuel system would need to be upgraded on my truck.
@Car Guy daddyo Please read up on E-85 there are numerous articles that support people with street cars running 12 to 12.5 cr on E85. I was just wanting to ask Vortec Pro and see what he has done. I guess from his response he hasn't built one to take advantage of E85. Yes if you are looking for an easy out you can 110 octane, but if you do your homework you can run much higher cr than 9.5 on the street.
Hey Mark I have a question about my 496BBC build.. Took my 454 Gen V (5), 4 bolt main in to get a complete 496 Stroker job done. The shop was awesome and did a great job! Worked the block, worked the 781 cylinder heads, internally balanced and blueprinted. Bore: 4.310in Stroke: 4.250in Cylinder Head Volume: 118cc Effective Dome Volume: -25.7cc Deck Clearance: .025in Compressed Gasket Thickness: 0.039in My last Dyno Pull after messing with 2 different carbs was : Timing 26 INITIAL 40 TOTAL.. DC CARB BLACK WIDOW… 850 .. UNLEADED WITH HVH 1 INCH SPACER.. Jet to 75-83 from 76-85Less TIMING… Best we got was : 704.0STPTrq Clb-ft And 590.4 STPPwr CHp.. Does these hp and Tq numbers look right? It’s going into my Jet Boat, so the 704.0 STPTrq Clb-ft was right at 3,500rpms and the 590.4 STPPwr CHp was right at 5,000rpms..
@@jimmyg8656 yep an I have made good power with 489cid with oval port 049 heads ported the right way. I have a build I did that makes 589tq at around 4000 an 596hp at 5600rpm on the dino with out any tuning. We only did the break in on the dino casue the engine was going to sit casue of the build I'm doing on a 67 elcomino for a guy. I put a 6 speed tremic behind it an can't wait to drive it. We are up in the air which way to go with a carb or fuel injection system on it. But I think it has a lot left in it on a good tune.
I believe you guys are in Socal? Me too...not a big chevy guy, but it seems you guys are getting alot of power out of what I consider a mild setup for a 500 ci big block engine. With all the labor that goes into your builds especially in the balancing and cylinder head work, would it not be more cost effective to go Aluminum cylinder heads? I'm a Mopar guy and the OE 440 heads are way down on flow compared to where your at with those oval port heads. Good work, I love your vids, I just imagine your doing Hemis or 440s....lol
I would definitely put that 265 head on there anyday before the 049's with the entry head cost of $2,300 . You can put that AFR head on a 454cid with a hydraulic flat tappet cam and make 575hp and do nothing but install them , I wonder what Mark sells a set of his 049 heads for ??? I would choose AFR 265cc heads every day of the week !
Hi, I have a Gen6 BBC. I put a intake and carb on it. Do I have to run the return from the intake to the water pump? This is my first Big Block and can't find the right answer. Thank you, Zach
The heating system will adequately function as a bypass and those ports can be plugged. Drilling two 3/16 holes in your thermostat flange can provide sufficient bypass as well.
Mark built my engine and he recommended using the bypass hose from water pump to intake. I also used a Robert Shaw Stewart thermostat which comes with bypass holes. Since he built it and that is his recommendation that is what I am doing on my new engine. Lots of info and opinions on the web to help you make your choice. The hose cost about 5 bucks at most any auto parts store.
Where there ever any open chamber 781 heads. If so I am trying to make a under cover engine. Look STOCK, but DEADLY. Look like a duck, RUN LIKE A EAGLE .
Hi Mark, I have a set of closed chamber heads 3904390. Would these heads be ok for a street engine? What would you suggest for upgrades on these heads? Thank you.
I built my first 496 out of a genV block and I have an issue with magnetic metal glitter in all of the spring pockets but I can’t find the source of the metal. Any ideas ? Thnx
I’ve called several times last month without a call, I was interested on a 496, now I’m looking at the 598 from blueprint, anyone know if they good motors?
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This 496-650 is probably the best oldschool-highpower-streetengine i know.
1) Old iron block & heads
2) over 600 hp anywhere over 5k
3) has vacuum and your granny can drive it...
Lookin to 496 my 84 C30, have a few old mk lV blocks with 049 heads… man your videos have inspired me
Who else loves BBC?💯😁
Back in 1998 I built a 12.5 ls7 454 short block and installed merlin 269 iron oval ports, everyone laughed at me when I removed the iron rec ports.
12.5 compression
Merlin iron oval ports I ported.
Ultradyne solid roller. 263 271 660 680 108 lobe sep installed at 103
Dart oval port
1050 Dom.
On a stuska dyno it did 726 hp and 640 torque. Hp peak was 6800.
Car went from 10.60 at 128 to 10 flat and 136.
The good old days, I ran that engine for ten years on street and track.
Very impressive
Awesome video! I love it when the oldies are still goodies...Thank you so much...
Glad to see your back I really enjoy your videos .
Mark built one of these for me; dyno tested it at his shop when I picked it up in Aug, 2020; just to give you an idea of his consistent builds, my dyno sheet looks like a carbon-copy of this one, only difference was mine at 663hp vs this 667.(I'll have to get my money back :)
I have been to Mark's shop a few times and watched him build these, from the initial greasy used-core disassembly, through the final product; He's an ANIMAL when it comes to perfection.. close enough doesn't cut it; he also has the energy of ten normal guys as a one-man show. HIs paint jobs are almost too nice to hide under the hood! Like most others, I'm amazed at the power he gets from the factory stock "junk parts" we all threw away 40-50 years ago.!! You can't argue with the numbers and the consistency of his builds. Bad news is, my lazy ass still hasn't put it in the car..A '67 442 Olds... but I know it'll be a RELIABLE fun ride.
Hurry up
We need Quarter mile times/MPH
THANKS
Awesome, I'm building a very similar engine myself. Only 30 over so its a 489, 781 heads (almost identical to 049), scat crank, 12cc dome pistons = 9.6:1 cr, Straub hyd roller cam 229/241 @ .600/.570, 1.7 roller rockers, air gap intake, Holley 950cfm double pumper. Can't wait to get it in my '73 Camaro!
@Car Guy daddyo I just fired it up for the first time last week. Runs and sounds great
Thank you.... Looking forward to seeing more of your work.....
Thanks Mark, awesome video. I really like how you walked through and explained the parts list and also posted the dyno sheet.
Hey Mark! Glad to see your videos again. I'm loving my 468!!!
Glad you’re back!
Yes! You have been missed.
Great engine build Mark.......Oliver, the Elky is getting a new heart transplant!
Love your video sir! Nebraska in the house. Ran big block in are cruiser car on dirt! Love that engine! Bored to a 468.
Something I forgot; Mark usually starts his pulls at 4000rpm; notice the torque at 4200 already decreasing, I'm "guessing" it was making more somewhere below 4000; I realize once your into the pedal you're above 4K almost instantly, but I'd like to know what the torque really was.
Another fine build from Mark!
Nice to see and hear you!! Welcome back...
Pretty amazing power and broad torque with a smallish cam and iron heads. I really didn’t think it would pull that high with only 315 cfm available at peak cam lift
Very nice work I build a lot of strokers myself!
Glad your back Mark. Sure missed seeing the videos sir.
Good to see ya back. I enjoyed your other videos a lot. Thanks.
Welcome back!
Nice to see you Mark !!!
Nice build Mark! You’ve got me second guessing myself on the 467 you have in the works for the Biscayne
Nice clean shop and work, from the looks of the cylinder wipe down towel my guess is that there aint a single grain of contamination in there..
Although you dont tend to show it very much it looks like you are having fun doing high quality work, a true professional in every sense...
Thank you and please keep rolling...
Glad to see you guys back.
Glad to see you making videos again. Thats a pretty nice torque curve.✌😁
Glad to see you again
Hope to see that budget big block finished and that buick you were talking about
Awesome! Thanks for sharing Sir 👍.
More videos please! I know you're busy, enjoy your content.
Hey guys welcome back.
Any chance you’ll be finishing that 620 hp 454 build?
Great build and informative video. You guys really have those oval port heads figured out. Just wondering about how many hours do you spend just porting those heads?
Nice build Mark
Look forward to your vids..
Mark is the BEST!
He is...? He took a deposit from me on an engine before his Texas move and I never heard from him again
Happy Easter praise God for Jesus grace Christ amen , and you for showing this vlog , I’m stock piling big block parts to build, speaking of heads , I don’t know if you already showed the different Selection of heads, can you show the shape of each port for each different em heads ??!! , thanks I picked up a big block two fours tunnel ram Edelbrock, and it is the TR2X, and it looks like a kinda square oval shape on the ports, I checked a HEI dis, and that’s not going to work , so I’m probably going to use a points type , or msd or Malory, anyway thanks BigAl California.
Gday guys. Really appreciate you spending the time doing these videos and sharing your expertise. They are awesome to watch. Have you built any Ford Cleveland engines? Would love to see a complete build of one of these. Keep up the great work and looking forward to seeing more vids.
Mark. Glad you are back. I will be watching every video! Oh and please dont be nice to the idiots that comment 🤩
Great job
Glad to hear
Awesome!
Watching...
Thank You for sharing!!!
Diggin your videos
Nice Mark!
Welcome back appreciate all your info wondering if you can help me with a head choice 4A 496 I am building
Glad to see the details of building are awesome. so seems like plenty of torque and lower RPM Power available, would gearing /tire be less with the 4.25 stroke?
Great information hope all is well Mary Christmas 2023
Hey Mark, thanks for your time and knowledge but I was wondering if you have to put in hardened valve seats in the 049s? Thanks
I have a 496 bbc with a pro flo 4 efi system installed on it and I'm trying to figure out the timing. Right now base timing is 22 and comes in at 1200rpm. Total timing is 36 and comes in at 3500. And my vacuum is at +15. When my total is running on my tablet and I'm cruising it says my timing is at 50, is that too high? And when I'm cruising in first gear and lightly step on the throttle it starts to buck around.. any tips?
Welcome back great videos BTW ,could you tell us what brand and weight of oil you use for these motors ??!!
Mark, great to see you guys back! It looks like the camera quality has been upgraded too! I'm always impressed with your cleanliness of parts and build at your shop, well done. Hey I've got a question, I live in Indiana so I'm not at altitude and E-85 is everywhere and I want to take advantage of every last drop of compression. If I build a 454 or 496 with a good iron GM head with upgraded valves how much compression could I get away with on E-85 for a street/strip engine, I mean every last bit. And would you use a flat top piston and deck the heads or use a domed piston. I've heard compression ratios from 12-14.5 but I want to ask an actual engine builder. Thanks again and I can't wait for more videos!
Thanks! I've never run E85 before, so I don't think I'am qualified to answer your question, I do want to try it on my 327 truck, the fuel system would need to be upgraded on my truck.
@@VORTECPRO Is it not prevalent where you are?
@Car Guy daddyo Please read up on E-85 there are numerous articles that support people with street cars running 12 to 12.5 cr on E85. I was just wanting to ask Vortec Pro and see what he has done. I guess from his response he hasn't built one to take advantage of E85. Yes if you are looking for an easy out you can 110 octane, but if you do your homework you can run much higher cr than 9.5 on the street.
Hey Mark, wish you were closer, would love you to do a block for me. See you at GM squarebody.
Craig
👍
Ty
Hey Mark I have a question about my 496BBC build..
Took my 454 Gen V (5), 4 bolt main in to get a complete 496 Stroker job done. The shop was awesome and did a great job! Worked the block, worked the 781 cylinder heads, internally balanced and blueprinted.
Bore: 4.310in
Stroke: 4.250in
Cylinder Head Volume: 118cc
Effective Dome Volume: -25.7cc
Deck Clearance: .025in
Compressed Gasket Thickness: 0.039in
My last Dyno Pull after messing with 2 different carbs was : Timing 26 INITIAL 40 TOTAL.. DC CARB BLACK WIDOW… 850 .. UNLEADED WITH HVH 1 INCH SPACER.. Jet to 75-83 from 76-85Less TIMING…
Best we got was : 704.0STPTrq Clb-ft
And 590.4 STPPwr CHp..
Does these hp and Tq numbers look right?
It’s going into my Jet Boat, so the 704.0 STPTrq Clb-ft was right at 3,500rpms and the 590.4 STPPwr CHp was right at 5,000rpms..
Here's a Question, do you use a Oval Port, or Rec Port edelebrock performer RPM, with the oval port heads, and have dyno tested both?
I know quite a few motor heads that claim you can’t make over 400hp on any GM iron head. One of them is another popular TH-cam race engine shop.
thats just plain stupid talk
@@jimmyg8656 yep an I have made good power with 489cid with oval port 049 heads ported the right way. I have a build I did that makes 589tq at around 4000 an 596hp at 5600rpm on the dino with out any tuning. We only did the break in on the dino casue the engine was going to sit casue of the build I'm doing on a 67 elcomino for a guy. I put a 6 speed tremic behind it an can't wait to drive it. We are up in the air which way to go with a carb or fuel injection system on it. But I think it has a lot left in it on a good tune.
@@jimmyg8656 YES.......LOL
You must have some good connections to find what is now RARE parts like the better heads and even 454 block that are good are rare now
How much does a engine like that cost ? Thanks
any fords coming? glad you are back...
When you say installed on a 105 106 do you mean LSA, and what would the cylinder pressure be? Thank you.
I believe you guys are in Socal? Me too...not a big chevy guy, but it seems you guys are getting alot of power out of what I consider a mild setup for a 500 ci big block engine. With all the labor that goes into your builds especially in the balancing and cylinder head work, would it not be more cost effective to go Aluminum cylinder heads?
I'm a Mopar guy and the OE 440 heads are way down on flow compared to where your at with those oval port heads.
Good work, I love your vids, I just imagine your doing Hemis or 440s....lol
Mark, Isky spring, 8005-A , 8005-SP or 8005-PLUS ?
LOVE IT
What are your thoughts on a AFR 265 head on this type of build?
I would definitely put that 265 head on there anyday before the 049's with the entry head cost of $2,300 . You can put that AFR head on a 454cid with a hydraulic flat tappet cam and make 575hp and do nothing but install them , I wonder what Mark sells a set of his 049 heads for ??? I would choose AFR 265cc heads every day of the week !
What is the name of your company interested in a 496
Can you guys try the brodix 2016 hvh intake.Scott Shafiroff use it on a 615 c.i.d. motor with good results.
Do you guys happen to sell just the cylinder heads?
Hi, I have a Gen6 BBC. I put a intake and carb on it. Do I have to run the return from the intake to the water pump? This is my first Big Block and can't find the right answer. Thank you, Zach
No you do not
The heating system will adequately function as a bypass and those ports can be plugged. Drilling two 3/16 holes in your thermostat flange can provide sufficient bypass as well.
Mark built my engine and he recommended using the bypass hose from water pump to intake. I also used a Robert Shaw Stewart thermostat which comes with bypass holes. Since he built it and that is his recommendation that is what I am doing on my new engine. Lots of info and opinions on the web to help you make your choice. The hose cost about 5 bucks at most any auto parts store.
Hey mark I am interested in buying one of these, how do I contact you? Thank you
Looking for updates... recent videos on your engine builds... Like your channel, but needs new content :)
MORE VIDEOS!!!!!!!
Does Isky make a good cam that you could recommend for a Street/Strip application in a N/A 502 BBC on pump gas ProStreet car?? Thanks for the content.
Do you sell rotating assembly for a 496 and where abouts are you located. Thanks and I enjoyed the video.
Where there ever any open chamber 781 heads. If so I am trying to make a under cover engine. Look STOCK, but DEADLY. Look like a duck, RUN LIKE A EAGLE .
Did he ever actually say what the compression ratio was on this engine
What is your take on a gear drive timing set?
Do you have a website?
Hi Mark, I have a set of closed chamber heads 3904390. Would these heads be ok for a street engine? What would you suggest for upgrades on these heads? Thank you.
This engine u have built is it the same as the 496 big block engine that came in chevy & gmc HD trucks in 2000 thru 2007
No, parts don’t interchange
Why is 10:1 high for you? Do you do alot of forced induction or nitrous builds?
Probably because it’s an iron head motor maybe pump gas?
with my block can you build me a engine like the one you are dyno testing with oval port 781 heads that I have and what would it cost
I noticed a two bolt main, is that adequate for a 4.250 stroke and the extra piston speed?
That sheet had a 2007 date!
I don't bother to set the date.
Where are u guys
I built my first 496 out of a genV block and I have an issue with magnetic metal glitter in all of the spring pockets but I can’t find the source of the metal. Any ideas ? Thnx
I have question, will that valvetrain fit under stock valve covers?
What’s your thoughts on the 71, 3993820 heads?
What are the size of your headers?
i need one of these, can you build it for me ???
I’ve called several times last month without a call, I was interested on a 496, now I’m looking at the 598 from blueprint, anyone know if they good motors?
Blueprint good IMHO, best customer service in the business!
What converter stall is in your chevelle and what diff gears thanks
How much to build this engine?
What fuel is used and what was the Timing curve
91 octane 36 degrees total
How much power did that 454 end up making?
605
What happened to the 455
Where are you located please?
California
Hi Mark can i buy the isky 238/248 hydraulic roller you use. I'm in Australia? Thanks
Order it from summit OR jegs online. Or your local speed shop