hi i have a 305 tbi it has a roller cam !
around the cam in front of the first lobe it has a number stamped which is cpc.bc.177....155.cpc.bc.17...155.cpc.bc
ok depending on wear u start reading the number u can com up with difrent combos !
the only cam i have found listed for a 305 tbi is aa cpc 155.15
any body ?

 

ok more problems the 305 has stock pistons
the engine hasn been fitted withn 193 cylinder heads
i understand these are 350 tbi heads
with 63cc combustion chambers
if i replace the stock pistons with flat tops will this make the compression sumwear near stock ?

 

https://www.letmegooglethat.com/?q=3...em+part+number

GM parts like cams (not all, but those, at least) are regularly identified, known, and referred to, by the last 3 digits of their part number.

CPC (sorry, can't remember what the acronym stands for) was the mfr of the cam core; the blank that the finished cam was ground on.

Sorry, this forum is mostly in English, and although I know MANY languages, and might be comfortable in conversing in them, that's not in any that I'm aware of, so I'll take the leap of faith that I can guess what you're trying to ask, but lack the appropriate literacy. I think you're asking about "somewhere"?

Yes.

Butt that's a $1000 solution to a $50 problem.

How about, just pick up a set of those junky otherwise-worthless trash 187 casting 305 TBI heads that PLENTY of people on this forum are likely to just GIVE AWAY when they realize there's abuncha worthless dirty cast-iron laying around after they make an improvement such as 081 heads, and put THOSE on there instead? MUCH cheeeeeeeeper and eeeeeeeeeezyer than dinking with the short block, and MUCH less risk of anything going wrong. Besides being eeeeeeezzzzyer and FAR LESS $$$$$$ to throw in the trash later on when you realize that it was a waste of time and money working on a L03 that way ANYWAY.

 

Thanks for cam info
I'd like you to get me a pair of 081 heads and ship them to me
Then have any work on them ie guides seats etc for £50
As I already have the pistons in a box !
If I wanted to fit a 350 I would I don't and yore opinion was not asked for .
For yore info it would cost £0.50p more to build a 350
If I wanted one

 

"yore".

This is where we're (humans) are headed, folks. Idiocracy is here, now.



I wonder where Sofa said; "Put in a 350".....?

 

Wast of money on a 305 !

 

It will cost you more to install those "free" (or at least, paid for) pistons, than to buy another set of heads and have them shipped over - be they 187 or 081 or any others - BY FAR. Or for that matter, to just run what you have now, sit back and keep your searches active, and wait for some to show up.

Not sure where ANYBODY said anything about "350", even though that's the right answer in most cases? Also not sure where you listed people whose opinions agree with yours and therefore theirs are the only ones that are welcome? This IS an Internet forum, after all; if YOU post a question, ANYBODY might randomly decide to answer it even if they don't ACTUALLY know the answer, or equally, might decide NOT to answer, even if they DO know the answer? Maybe you making up stuff to attack people that are trying to help you, besides your unintelligible gibberish typing, is why you seem to have trouble getting answers to your questions?

Of course, if you had told us somehow - maybe put in your profile so that it shows under your userID, perhaps, like Tom's says he's in Park City UT - that you are in the UK, maybe we could tailor our answers to your questions better. Wouldn't have mattered much in this case, butt might in others.

 

Junk heads wast of money etc etc
did not say 350 but that was whot u ment
You are insulting
The fact that I'm in the uk had no bearing on the answer
why are 305 parts junk ? Why is a 305 a wast of money ?
this all in yore opinion !
Which was not asked for .fair coment if I had a set of 081 heads yes that would be the way to go
You did not ask why I was doing whot I asked which u understood as you give the answer to the question
The engine is striped for rebuild so putting flat top pistons wont cost a penny extra .
but you decide to insult .
do the forum a favor if u can't be nice then don't post

 

Because they're part of a 305.

Because it's a 305.

No, it really doesn't; the 305 is junk there too, didn't somehow get any better just by crossing the pond. However had we known that we might have been able to tailor our answers more nearly effectively to you (NOT "yore", illiterate) specific situation. Being in the UK has no bearing on the cost of machine work and other ancillaries that go with changing out pistons. Heads are still cheeeeper, especially plentiful ones that are unpopular (for good reason) like 187.

Sounds good to me. I won't. After all, it's YORE money YORE wasting, not mine. Glad I could be of service.

Go forth and multiply.

 

More insults
yore doing well
may be u ahould take yore own advice!

 

Don't encourage him.....

 

You can make 300+ hp all day long with swirl port head castings even on a 305. The 155' stamping is a 305 Peanut roller. 179/194 @ 0.050, 0.350/0.385 lift, 109 LSA, 106 ICL.

 

Thank you
I dont want a race engine .my 305 has had 350 swirlports fited to it which have 63cc chambers
the 305 head has 58cc chambers the question origanaly posted was if I fit flat top pistons would I make up the 5cc loss in compression
I was asking for sumone to back up whot id worked out for myself. It turns out the 350 heads create more problems than answers valve shrouding etc
I'm awaiting conformation on a pair of tpi heads from summit which landed hear will be £850
but then I don't live in the US and 305 heads don't grow on trees
Thanks again