How much can i flow out of stock intake, heads

[crazygn]

Does anyone know how much cfm i can flow out of the stock intake and heads. Iam going to be going with a much bigger turbo then the ta33 what would be the best intake set up to work with my sperco intercooler.

Does any one know about the heads what they can flow stock,.

And a 307 fuel pump what is it good to i was told high 11's is this true.

I will be going with a ta 54 and don't want any thing holding it back.

thanks guys

 

[TType84]

well, stock intake is your biggest bottleneck there..

it WILL hold you back....

 

[cool 84]

Don't worry about the 307, you won't come close to overpowering it as long as it's hotwired. As for stock heads, I know people have gone in the 123mph range with a ton of boost. I also know the stock 87 intake outflows the stock heads but I doubt the 84 intake does so that's probably your biggest bottle neck.

To go fast, take advantage of that huge turbo and FM IC and crank the boost. Try for 25+psi on the best gas available. I would really like to see what the stock intake could do.

 

[TType84]

It would be neat if someone could hook one up to a flowbench..

 

[WFO]

lee thompson went 122 on the stock intake/ported heads.

not saying it wouldn't be easier with a better intake...

 

[cool 84]

Wasn't the intake stock (no gutting or internal work) with some porting on the runners?

 

[WFO]

it was port matched to the heads

 

[crazygn]

Thanks guys maybe i'll try the stock intake first and see i can get from it. I don't have much money any way.I'll do the intake and heads one at a time so people can see what works best.


thanks guys

 

[TType85]

When Jay was doing my intake he flowed a stock 84/5 intake and it flowed somthing like 140CFM per runner at 28" of water. The stock 86/7 was 180-210ish and the TM v2 was 230 for each runner.

Lee Thompson has gotten some impressive MPH out of the intake. You can go fast with the stock intake, but it is harder to do. Essentially, other than the cam, my motor is stock (Stock compression ratio, stock heads). I went 117 (alt corrected 122) on 23psi with the 54 turbo, TM v2, ATR Headers/DP and 214/208 cam.

Thats also running with a N/L converter that looese a few MPH on the top end and 25.7" tall tires. If I had a 9" Vigilantie 7-disc lock up and some 28" tall tires, I'm sure the car would have MPH'd a little better.

 

[Jerryl]

TTT

 

[Boost231]

When Jay was doing my intake he flowed a stock 84/5 intake and it flowed somthing like 140CFM per runner at 28" of water. The stock 86/7 was 180-210ish and the TM v2 was 230 for each runner.

Lee Thompson has gotten some impressive MPH out of the intake. You can go fast with the stock intake, but it is harder to do. Essentially, other than the cam, my motor is stock (Stock compression ratio, stock heads). I went 117 (alt corrected 122) on 23psi with the 54 turbo, TM v2, ATR Headers/DP and 214/208 cam.

Thats also running with a N/L converter that looese a few MPH on the top end and 25.7" tall tires. If I had a 9" Vigilantie 7-disc lock up and some 28" tall tires, I'm sure the car would have MPH'd a little better.

jerryl, i like it

anyways how much does max ported irons flow per runner?

 

[charlief1]

Talk about digging up the past. Nice find Jerryl.

 

[Jerryl]

jerryl, i like it

anyways how much does max ported irons flow per runner?

...... I also flowed a old M&A Stage III head with very, very minor port clean-up work. #'s on one intake valve

Lift:
.100 = 79cfm
.200 = 120
.300 = 160
.400 = 193
.500 = 209
.550 = 212
.600 = 214
.650 = 217

If you consider that these numbers are for M&A's, you get the idea on ported irons.

Oh, BTW, here is another link for you.
Read and analyze the data carefully.
THANKS to Turbo1dr for posting!!!
http://www.turbobuick.com/forums/en...asing-valve-size-stock-heads.html#post2380118

 

[charlief1]

Thanks Jerryl, I hadn't read that one. It's saved in my files now.

 

[Boost231]

so, i took a look at the flow #'s. So a stock ported intake should flow right at if not right below a set of ported heads.

stock intake is about 10cfm or so under the flow avg. #'s . now if we look at anything .300 or more the heads will flow more. so ideal would be to get around 80cfm more from a stock intake. not sure what a stock ported puts it at but i would say probley still 40 or so cfm off. not to bad