Thread: stock SBC heads

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i just got a set of stock 192s (or did he say 196? i dont remember im new to chevy heads) and i was wondering if they were any good and what i can do to make them better.

Look for the casting numbers. I think 8 digits? Somebody correct please if I am wrong. Post those numbers on this thread. Those numbers will provide much needed info about the heads so we can better understand what you have and what you want.

ahhhh thank you. ill be sure to get them tommorow

Depending on the year it can vary from 6 digits to 8 digits. I have a small block V8 ID guide book that shows all the numbers.

the only numbers i found was a GM with a 8 under it and the numbers 333882

882 casting heads, 76cc chambers, basicly a common head found on '74-'81 350's. There fairly popular but not the greatest because they have somewhat insufficent flow.

ok, but theyre decent heads and ill use them for now. im gonna open up the intakes and put roller rockers on them.

what else can i do to get them to flow better thats not gonna break the bank?

Originally posted by muteboy49
ok, but theyre decent heads and ill use them for now. im gonna open up the intakes and put roller rockers on them.

Yes, there decent for mild builds. you should run flat tops or a domed pistion to get the compression ratio up. with a stock standard dish pistion, it would yield 8:1, flat tops would get you 9:1

the kit im going to buy for my motor said it will give me a 8.6:1 CR with the 76cc heads but im putting a bigger cam in it for a 9:1 ish CR

what kind of lift can these heads take?

Originally posted by muteboy49
what else can i do to get them to flow better thats not gonna break the bank?

you can try porting and polishing the ports but without a flow bench, you won't know if you really did anything. you can only do so much to make anything better, after that point it becomes a waste. Run the heads for now, there only good for a mild build and only slightly better with improvements made. A set of aftermarket heads would be a wise investment if you wanted to make the engine better IE: new top end, you could just get like Dart or World Products heads but get them in 76cc so your comp ratio does not change. bottom line, don't put to much effort into the 882's, there only good to a point

Originally posted by muteboy49
the kit im going to buy for my motor said it will give me a 8.6:1 CR with the 76cc heads but im putting a bigger cam in it for a 9:1 ish CR

what kind of lift can these heads take?

You will need ither a flat top or a .100 dome to meet the 9:1 requirement otherwise, it is a waste to have the big cam. you can shave the heads a little and that will help but then you need to re cc the heads to get an accurate comp ratio calculation. The heads can be machined to fit almost anything I think. I'm not shure with there stock form.

good point but im definitely getting roller rockers and opening up the intake

"im gonna open up the intakes"

If you start grinding in the ports without having a great deal of experience and knowing exactly where to remove material, you'll most likely turn a decent set of heads into junk.

"what else can i do to get them to flow better thats not gonna break the bank?"

Just do a 3-angle valve job on 'em and call it good until you can afford a better set of heads.

" the kit im going to buy for my motor said it will give me a 8.6:1 CR with the 76cc heads but im putting a bigger cam in it for a 9:1 ish CR"

From the way you've worded this, I can't tell if you are thinking the cam will change the c.r. or not, but it won't. If you're saying that the cam you want will work with a 9:1 c.r., it will also work with a c.r. of 8.6:1, they're not that far apart.