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Very good video! Would be better if you loose the music

Just wondering what is the compression ratio compared to stock heads?

I regret selling one of 2 sets of Edelbrock Olds heads a few years ago...but money was so tight i kinda didn't have a choice. I bought 2 sets of first run Edelbrock heads when they were first introduced. Got a deal commiting to 2 sets early on and things were different then and i wasn't sorry. One set got cut and ported the other remained box stock. They performed very well. Ive always thought these Speedmasters are a direct copy of the Edelbrock thanks to china. I don't think anybody would argue with me on that subject. Being on disability money is tighter than ever. When the time comes and i save my pennies and sell some parts i do believe im gonna try a set of these. For the price i do believe they will work out just fine. If you want compression i learned that a .060 cut off the deck will get you near 66cc chamber. If you go this route have the machine shop chop off 0.100 off the intake face, just make sure they step the cut and not go into the valve cover flange. The ratio is 1:6 when cutting the deck to intake face. Doing this will allow you to run any virgin un-cut intake manifold, which is nice. Makes me remember a deal years ago, somewhere in the mid 1980s at a car show this feller had a mint set of cast iron F heads but they were cut i believe .050 and he had the factory aluminum w-30 intake cut appropriately to fit. He wanted $550 for all which was alot of money back then but still was in the ballpark for what they were. In my young mind i could not accept the cut intake manifold and knowing any other intake would have to be cut too so i passed on the deal. To this day i still wish i would have went ahead and did it but thats the classic coulda shoulda woulda story. Anyway getting back to what we're talking about, the 1:6 cut on the intake face is a no brainer and a given if you like to play with Olds engines and if you love high compression. Each point in static compression is about a 4% change in hp output over its operable range up to 6000rpm we will say. A true 12:1 engine will make about 50+ hp over a 9:1 engine with no other changes, in the 500hp range. So you can be first on your block with a 550hp Olds while everyone else is fiddling around with 490-510hp and they will want to know your secret. I can tell you right now a 575hp Olds 455 with basic parts like everyone else uses will push a 3713# 442 into low 11s @ 119+ so yeah, there is that. I enjoyed this laid back review of these cylinder heads. Makes me want my health back and run outside and go build another bullet engine just to throw into something and go have fun!

Would this cause a 28b1 code... i have an R56 turbo.

Where did you get those line spacers? Haven't been able to find them anywhere. Thank you

Thank You!!

Thanks for this video. There are many older vehicles that would be candidates for this system. I suspect everyone watching this understands why it is good, even though it is TBI and not MPI, still much better than the old carb and points! Also probably 10 or 20 million of us who hate front wheel drive vehicles!

How is the center port rich/peripheral ports lean issue on this?

I had several of those but never a need to work on them... Redone a lot of the Chevy 6 cylinders. Using a 230 head milled down and valve job , on a 250 block was a favorite... Don't know but I'm guessing you can't put a 170 head on a 200. Or a 200 head on a 250... ? I wasn't doing it for power , I was doing it , chasing 40 mi per gallon....

Were did you buy your transmission line spacers...

Looks like I am not... the only one. Has anyone replaced vacuum pump? Will that change anything if there no boost?

Can a 4l60 bolt up to this ?

Drunk shopping strikes again lol ;)

I am updating mine to hei distributor. Which one are you using?

Awesome!

My mechanic charged me extra 75$ to remove the freon.

Also, what would the horsepower Be

What would that sell for?

Just got a pair of proforge Taller upper ball joints. For $60 a pop they better be as good as they claim.

What kind of fitting do I need to help the flared end seal

Everything from seed master batter is all JUNK CHINESE Garbage stolen from people that actually know how to design and build real heads

comp cams makes a top end kit with screw in studs ,guide plates ,push rods and i also use the magnum roller tip rockers . ive built three 455 engines using the comp valvetrain parts and im very happy with the results and its easier to purchase all the matching parts than to piece it together hoping the various manufacturers parts will work well together

My pipe has the same movement but no leak at all?

I know this is 3 years old, but this was my problem. I must have pulled a vacuum line off while changing the thermostat housing. Thank you!

I need tork line oil mini cooper

That big boy turns 6500-7k easy. That valvetrain is on point whats that engine making hp and trq?

Dad had a 442 with a mildy done 455. That car would destroy my cousins efi fox...

I bet it’s slow 😒🙄😒🙄😒🙄😒

Heat shield bolts😢.

0.006 valve rock lol that junk 0.0013 too 0.0015 max valve guide ,thats a smoker for sure

to suit Culatas.......enough said, just crap. It's an alloy casting, at what point is a helicoiled thread not expected?

Do you remember the name of the part because I am on rock auto and I do not see a crossover hose?

Red 455? Factory red was high compression.

BUT what are the valve sizes?????????? Oldsmobile used 2.07 inch Intake valves and exhaust was around 1.64 inch if I recall correctly!!! This meant Oldsmobiles had amazing flow!!!

I'll take it!

What kinda car.

Way to go Eric nice 👍

sounds like a healthy half dozen!

Sounds Great! What vacuum reading did you see with the isky cam?

With that cam....what psi is your compression cranking? Thanks. If it goes in car and you ever time it on a dragstrip let me know...thanks.

Ooooooooweee an oldy but goody. Sounds good

Are these the heads you looked over in your last video? I’m looking for a set for my 400 BBo.

Love that sound. I have a mild 350 rocket in my ride. Oldsmobile. Keep them on the road...

Did you install headers while installing motor? From the bottom or the top? What is the difference between 350 and 455 motor mounts?

Good job buddy

Yeah mine went into safe mode after the blow off stopped working so I assumed it’s somewhere along the lines of the boost pipes. I’ve been looking for ages. Thank you very narrowing down where to start looking.

Tell Jeff to get some cotton balls and peppermint oil,mice will relocate!

😭

This is a fantastic video and I am going to check a few things when I get home. I did want to tell you what mine is doing. It’s an R60 and engine light comes on and the turbo kicks off. But if I am running down the road, put the clutch in, and turn the car off and then back on the turbo will start to work again. Any thoughts on that one?? :)

I think you may just saved me from replacing a turbo! I just got a mini s and the guy said the shop told him the turbo was bad, but after looking at the turbo, no shaft play and no wastegate play and wastegate closes with around 7 of vacuum. After looking at the vacuum lines under the manifold, I noticed one of the lines was disconnected, I reinstalled the hose. Still no boost, after finding this video, I realized that the shop or the previous owner has the vacuum lines completely backwards…. 🤦‍♂️ Time to pull the manifold again and fix it. Thanks for posting this video!!!! Must appreciated!