so i bought this motor out of an old nova and the guy said he doesnt know if its origional or not. i think it has been rebuilt for sure but i really cant find anything on the heads the number is 3888336 has anyone ever used this head and if so are they champs or are they chumps. oh and i belive it is a 350 2 bolt but i really dont know the difference by looking so it may be a 350 4 bolt

 

i bought a motor out of an old nova. 350 sbc. i cannot find any info on the heads on my new motor the number is 3888336 does anybody have any info on these heads are they chumps or are they champs

thanks

 

Those casting #'s can be hard to distinguish. Any chance it is 3986336?

"Old Nova" makes "chump" much more likely.

 

You can't tell 2- vs. 4-bolt from the outside. You need to pull the oil pan and look.

 

https://www.thirdgen.org/forums/post...270-post8.html
Should be 2 bolt mains; check block #

 

The block casting # doesn't necessarily tell you whether or not it is 2- or 4-bolt.

 

No
but the info in the link I posted above lists the block numbers the heads were fitted to and says the heads are off '71-'77 10/30 series trucks w/ 2 bolt mains

 

That's the only place that I could find with that information. Makes it suspect to me. Truck 350's typically had 4-bolt mains.

But, at any rate, you can pretty much assume that any early 70's factory truck heads are better door stops or boat anchors than heads to use on a performance engine. Don't have hardened exhaust valves or seats, if you need a reason not to use them. Large chambers and small valves are another couple good reasons to toss them.