Hey guys,

Looking at rebuilding a (Pontiac) 350 for my bird. The block I have access to (which is free - good price) is from a mid 70s pontiac. I haven't had a chance to take a look at it yet, but I assume that one of the first things I'll want to do is find some decent heads for it. I'm not looking to build an extreme powerhouse here, maybe around the 300hp mark.

Anyhow someone locally has listed the following:

1970 Pontiac Heads - $175
Heads are off of a 350, they have small combustion chambers and would be a good start to a high perf pontiac. Likely need to be rebuilt. Numbers indicate they are from late 1969 and the letter code is YU.

Comments on these heads? Is the price fair?

Thanks!

They are #11? Do a search on this site for the following:

"Sie Sind Scheisse."

Q, you made me pull out my German dictionary. But I'm not sure if you are calling the heads crap or politely calling Clay a piece of crap.

In this case, I would use my less-than-formal German and say that Sie = they. Otherwise, it would have read "Du bist ..."

However, if Clay took that wrong, then bitte entschuldigen.

"Sie" is polite "you", as well as "they". "Du" is familiar "you".

Du hast recht.

I´m only wondering where you learned speaking german... Even without grammatical mistakes... Thumbs up!
BTW - could we change completely to german as official forums language? Would be much easier for me...

Nein!

Haha...okay so they are crap then? :-)

anyone have an answer to this question,i,d be interested to know myself.i have a 1970 350 with # 18 heads i believe.

Well tuch ma sach! Go figure!

If your 350 has #18 heads, it's a '68 ... or someone put '68 350 HO heads on a '70 350. Check the date codes. If they end in 7 or 8, those are good heads. Ausgeseichnet! They might be #16 heads (one of 4 different #16 castings) with date codes that end in 9 or 0. If so, those are "marginal at best" heads.

just checked my heads they are #16 with date code a230,so i guess they are marginal .what heads would you recommend for a mild build and what size cam would you use.i went after the engine Jim (fbody69) had for sale but it went higher than i expected.

Building a 350 will cost you more than any other motor (Other than an OHC) to get "fun" power out of. A mildly built 455 will cost less and be loads more fun to drive.

However, to answer your question, I'd recommend any of the 72 cc heads from 1967 to 1970. Then have them decked slightly to get to a real reading of 70 to 72. Most are bigger, ranging from 75 (#62) to 80 (#13).

For the cam, any of the 068 "Copy Cams" are good, like the K2801 from Summit. This cam will "feel" a lot bigger in a 350 than it would in a 400 or 455. Also go with the factory 4-Bbl or a Performer, but not the performer RPM. The 350 is a little to small to flow the RPM on the street.

thanks P.M.I USA.just looking for options,now i know what to look for if i go the 350 route.

Any of the factory 350 heads are excellent for this goal. None of them is better than the other in stock form regarding flow. The only variable is compression ratio. To get the best all around 9 to 1 ratio use a set of 68 or 69 2bbls heads. #17 and 47.

The 18s are the highest compression stock heads but nothing special otherwise, not even screw in studs.

300hp at the engine is a slam dunk with stock parts and a set of headers. I'd shoot higher. opt for a good roller cam matched to the heads, factory Qjet and manifold, have the machine shopplung cut the bowls on the head for the best bang for the buck flow improvements. Really that easy.