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#21
03-05-2014, 10:06 AM
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It's a 440. I forgot his exact FPS, but IIRC he said it was in the 320 FPS range. I can ask him today when he comes in. That's not the issue now though. They flow as good as they are going to get. It's getting them down to 203/64 that's the problem.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
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#22
03-05-2014, 10:29 AM
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In stock classes,Intake air flow numbers that will be un-acessed by cam lift will not be of help at all in regards to the most important average HP and TQ numbers the motor makes.
Too bad there is not a smaller head to start off with (even the Sourse 440 head has too much exh port CCs, as getting port velocity numbers up into the 425 FPM range is whats needed. Keep close track on the dyno of how fast the motor makes rpm as the air flow/ port volume goes up or down.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#23
03-07-2014, 07:42 AM
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Paul, also make note that any airflow numbers at a given lift point that take place once the peak cylinder demand point has taken place will add nothing to the engines power output.
Any portng that was done to get those airflow numbers was just a waste of CCs!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#24
03-07-2014, 11:42 AM
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Steve, the lift rule is .480". As such we didn't concentrate on max flow, but rather the best average flow from .100"-.500".
The super stock class runs over .800" lift. This customer does cylinder heads in Sweden, and is pretty good. He's already got the super stock heads pretty much sorted out, I just need to try different valve jobs to see what works best with his digitized port. He had spent a lot of time on the stock heads, and with all my work and testing, I could only improve on his job by an average of 2 cfm. Which was 3 cfm higher at .500".
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
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#25
03-07-2014, 12:43 PM
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Paul generally they can use stock lift which for a RAIV would be more .512 because of the 1.65 rockers. I actually have a Comp copy of John Schloe's stocker RAIV came 274/274 @ 0.050! Why he was in the 10s back in the 80s with it.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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