Small block cylinder head questions

physically yes they fit. performance wise. Not very good. The ports and valves are small. IF you are only wanting a tow truck motor that won't rev past 4500 rpm you can build a real stump puller with those heads. But you'd be better off selling them anfd buying a new set of VORTEC heads from Chevrolet.for about $500/pair

Go to the link posted below for some excellent info on SBC heads. Make the decision yourself.

thanks for that link

So I reckon you would give the same diagnosis for a set of 14014416 heads? Seems someone bolted a set onto my 10243878 block at some point or other.

Ok everyone. Thanks for the info. I will put them on a 350 CI Reason is the 1/2 ton I plan to install them on has 271 (273?) gears in the rear. With a 3 speed automatic tranny 2nd revs out to approx 90 mph. Never sees 4500 rpm and not needed. I hope I get a real stump puller as "Im Right" suggested

Use these heads and either a stock 350 cam or a good RV cam from Crane, then pull some stumps.

Brian

Flat pistons in a 350, with 76cc heads will give you about 9:1 compression ratio, and about 8:1 with dished pistons. 64 cc heads will up that at least a full point, so I would expect you will have very high compression ratio with 58cc heads. This is about the size of the old 283 heads, I think. Do I hear detonation? I don't know where you will find gas to run in it. I used 69cc heads from a 307 on my dished 350. That and a High Energy

Colorado Springs, CO My advice may be worth what you paid for it.

Go to the link posted below for some excellent info on SBC heads. Make the decision yourself.