993 heads are great flowing heads. Both the original 993 heads and the Hecho en Mexico heads are good flowing smog heads. Goodwrench and Targetmaster used the mexican versions. This is normal to find on a crate engine
Ive always ended up with a bunch of 4 bolts for whatever reason. The only 2 Bolt out of 6 small Block 350s I own is the Budget Build. But yes the 2 vs 4 bolt will be argued till the end of time. I personally don’t care, long as it runs and makes cool noises it’s alright by me.
Id run either without worrying about it, but I've also blown up both versions so i disagree with people who try to convince me that you can't hurt a 4 bolt main, and i think i prefer the one piece rear main seal motors 2 or 4 bolt main they are balanced better but as i said I'd run any of them, although i won't power any 3/4 ton 2 or 4x4 with any 305's because I've destroyed 3 really good runners trying to pull around 3/4 ton trucks because i needed a motor and those were the deals available, and pretty much destroyed the bottom end on 3 h.o 305's with 601 and 416 casting heads i felt bad about that
86 to 95 are tbi heads the 993 heads are also to that engine , someone has swapped intake for a carb ..if you plan on building that engine at the very least mag the block
@aintskairtolskol9520 I don’t think this engine was ever touched. There was zero evidence of anyone being inside of it since it was assembled in Mexico in 86. Maging the block isn’t a bad idea but I feel confident that I’ve seen enough of these and know to look for the most common crack spots. I felt confident in what I saw and knew that I didn’t necessarily have to get it maged.
Although i personally didn't know what the 993 heads were original to they were on a 1995 gm Goodwrench target 350 forged crank 4bolt main 260hp crate motor it was in a 82 c15 GMC High Sierra factory 4spd th350 swapped GMC jimmy from Tennessee that id got ahold of years ago id had a rebuilt set of 991 heads and made the mistake of putting in new arp but factory style press in rocker arm studs and two of them got pulled out of the head and shattered 3 competition cams magnum pressed end pushrods like glass completely trashing them
They had gm performance replacement steel stamped rocker arm fulcrum and adjusting nuts, and Manley stainless steel street master valves and i ended up selling the heads for what the valves were worth a buddy of my younger brother wanted the new Manley valves
@@randomguy1807 This truck was an actually a New York truck. As far as going rate I really don’t know, I’ve never been one to wheel and deal. I know how much stuff is worth on average and I hate low balling people.
ya mine came from factory already machine to take a roller set up , im not willing to spend a extra 2 grand to do what a great flat tappet can do also , the lifter pockets are a 1/4 inch deeper but doesnt effect push rod travel . crazy thing fellas in 1976 it cost 200 bucks for a rebuild master kit all new parts and a hard earned 65 bucks for machine work
@@Hillbillygarage1215 I pulled one cap off and was satisfied. I really need to start showing that on video though. I always find myself in too much of a hurry when trying to get these engines together. And there’s things that I thought I recorded but when I edit the video I find out that I didn’t have the clip, or I find it a few months later after the video is already posted. Thank you for the input.
@BoneyardRevivals okay, makes me feel a bit better. I like your channel and the one man show aspect. If you get a minute how about hop on in to Hillbilly Garage and see what we are up to. Thanks
Put a goodwrench 350 in my 86 K10, still going strong 12 years later!!!
993 heads are great flowing heads. Both the original 993 heads and the Hecho en Mexico heads are good flowing smog heads. Goodwrench and Targetmaster used the mexican versions. This is normal to find on a crate engine
2 bolt vs 4 bolt. That debate will go to the end of time😅
Ive always ended up with a bunch of 4 bolts for whatever reason. The only 2 Bolt out of 6 small Block 350s I own is the Budget Build. But yes the 2 vs 4 bolt will be argued till the end of time. I personally don’t care, long as it runs and makes cool noises it’s alright by me.
Id run either without worrying about it, but I've also blown up both versions so i disagree with people who try to convince me that you can't hurt a 4 bolt main, and i think i prefer the one piece rear main seal motors 2 or 4 bolt main they are balanced better but as i said I'd run any of them, although i won't power any 3/4 ton 2 or 4x4 with any 305's because I've destroyed 3 really good runners trying to pull around 3/4 ton trucks because i needed a motor and those were the deals available, and pretty much destroyed the bottom end on 3 h.o 305's with 601 and 416 casting heads i felt bad about that
All Goodwrench 350s came out of Mexico. I think they are still are doing remans down there.
New here but i like it
86 to 95 are tbi heads the 993 heads are also to that engine , someone has swapped intake for a carb ..if you plan on building that engine at the very least mag the block
@aintskairtolskol9520 I don’t think this engine was ever touched. There was zero evidence of anyone being inside of it since it was assembled in Mexico in 86.
Maging the block isn’t a bad idea but I feel confident that I’ve seen enough of these and know to look for the most common crack spots. I felt confident in what I saw and knew that I didn’t necessarily have to get it maged.
I was thinking 187 and 991 heads were tbi heads not the 993?!
@If I am not mistaken 187s were the 305s and the 191 and 193s where TBI heads. The 993s were a 70s smog head for 350s and 400s.
Although i personally didn't know what the 993 heads were original to they were on a 1995 gm Goodwrench target 350 forged crank 4bolt main 260hp crate motor it was in a 82 c15 GMC High Sierra factory 4spd th350 swapped GMC jimmy from Tennessee that id got ahold of years ago id had a rebuilt set of 991 heads and made the mistake of putting in new arp but factory style press in rocker arm studs and two of them got pulled out of the head and shattered 3 competition cams magnum pressed end pushrods like glass completely trashing them
They had gm performance replacement steel stamped rocker arm fulcrum and adjusting nuts, and Manley stainless steel street master valves and i ended up selling the heads for what the valves were worth a buddy of my younger brother wanted the new Manley valves
What’s the average goin rate in old junky vehicles in PA? Also those 86+ blocks are awesome for roller cams
@@randomguy1807 This truck was an actually a New York truck. As far as going rate I really don’t know, I’ve never been one to wheel and deal. I know how much stuff is worth on average and I hate low balling people.
ya mine came from factory already machine to take a roller set up , im not willing to spend a extra 2 grand to do what a great flat tappet can do also , the lifter pockets are a 1/4 inch deeper but doesnt effect push rod travel . crazy thing fellas in 1976 it cost 200 bucks for a rebuild master kit all new parts and a hard earned 65 bucks for machine work
You are gonna check the bearings, right?
@@Hillbillygarage1215 I pulled one cap off and was satisfied. I really need to start showing that on video though. I always find myself in too much of a hurry when trying to get these engines together. And there’s things that I thought I recorded but when I edit the video I find out that I didn’t have the clip, or I find it a few months later after the video is already posted. Thank you for the input.
@BoneyardRevivals okay, makes me feel a bit better. I like your channel and the one man show aspect. If you get a minute how about hop on in to Hillbilly Garage and see what we are up to. Thanks
Will do bud! Thank you!