SB 3973370 heads?????

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Apr 30, 2008 | 11:09 PM

vettesbydesign

Thread Starter

Safety Car

Joined: Aug 2006

Posts: 4,102

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From: Forsyth Illinois

SB 3973370 heads?????

Anyone know much,or anything about these?I have found little,except they were over the counter heads for 69/70 Z28s,very rare,never came on US production vehicles,but did come on prod.Cars in Cananda,they are 64cc double humps.One guy said they were about the best performing factory.SB heads he has ever used.
I have a set that already had screw in studs,and hardened seats,and have them at the machine shop getting 2.02s,and 1.6s installed,and some other trick stuff.
I plan to run them on my 68 DZ 302 that has 65 461 heads now.Any thoughts here?
Thanks!!!!

Apr 6, 2025 | 07:13 PM

Mke1230

2nd Gear

Joined: May 2024

Posts: 2

Likes: 0

Quote:

Originally Posted by vettesbydesign

I was told that by the casting number of my engine that it was a 68 327 engine out of a 68 Camaro, it is now in a 1924 Dodge Doctor coupe or also called a business coupe due to the large trunk when doctors made house calls back then. My question is what is the correct heads on the 68 Camaros ? The heads on the engine are 462 , I know the 291 and 462 are just about identical but I'm trying to figure out if these are the ones that came with the motor or not because I have an over heating issue and not sure if it is the heads causing the issue or radiator, since the radiator is probably close to or is over 100 years old, but I took the radiator out and ran water thru the top and it flowed perfectly fine out the bottom hole and wasn't leaking anywhere, and I'm trying to figure out if I want to have these heads redone or just get a set of 291 heads that are already rebuilt. Thanks

Apr 6, 2025 | 08:36 PM

stingr69

Le Mans Master

Joined: Mar 2004

Posts: 7,493

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From: Little Rock AR

Necro thread. OP has been gone for over 15 years.

Last edited by stingr69; Apr 8, 2025 at 01:56 PM.

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