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#11 |
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Join Date: Aug 2003
Location: Vermont
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RJ,
The 70 and 71 high compression 340's have a 2.02 intake valve. The 72 and 73 low compression 340's have a 1.88 intake valve. I am assuming heads with the 2.02 valve can flow substantially more air than the 1.88 with S/S style porting. Charlie Walc ran one of the high compression 340's in S/S years ago. He said it was a fun car, but an expensive one. |
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#12 |
Senior Member
Join Date: Dec 2001
Location: Elysburg, Pa
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Hi Stewart, I'm not sure if the 67 383 AFB has the weights in the rear or not. I have flowed the one without the weights and it was 565 cfm. The AVS is 635 and the 70 Holley is 645. These are clean stock carbs I had laying around, The numbers are rounded to the nearest 5. If the intake will be custom made the Stage V head which is similar to the 346 and 452 would be the best bet. If you use a store bought mani the 906 head can be an advantage. I would stay away from the 67. Paul.
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#13 | |
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Join Date: Oct 2002
Posts: 248
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#14 |
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Join Date: Jan 2002
Location: North Attleborough Ma.
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Hey Paulie,
Sam Dillow is looking to contact you. Send me a message with a number he can reach you at. Gmirza1236@aol.com
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GEORGE MIRZA STK 1236 |
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#15 |
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Join Date: Aug 2003
Location: Vermont
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RJ, you may be right. The port volume may be restrictive enough that the bigger valve makes no difference. I understand that the area closest to the valve is the most important, and as you move back upstream, it has less effect. I certainly have no first-hand experience doing any port work. Perhaps Paulie, who has been posting on this thread, might have some ideas.
RJ, do you run a late model GTO? If so, how fast is it, and what modifications have you made to it? |
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#16 |
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Join Date: Oct 2002
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#17 |
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Join Date: Dec 2003
Location: ALTA LOMA , CA
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I am not a mopar guy at all ... but it seems that wayne taylor , ken etter, Bob mazzolini have had pretty fast cars with the 318. i have no clue what year or car that combo is from .
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#18 |
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Join Date: Oct 2002
Posts: 248
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Greg, e-mail me - carolinaperf@yahoo.com
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#19 |
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Join Date: Dec 2001
Location: Arkansas - In the middle of everything.
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The '70 Holley on the Road Runner/Super Bee engine (335hp) flows considerably more than 645 cfm. The primaries are 1.562" (same as a 600 cfm carb) and the secondaries are 1.750" (same as an 850 cfm carb). I had one on my flow bench recently and it was well over 700 cfm.
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#20 |
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Join Date: May 2007
Location: Ocala, Florida
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Stewart, you may want to contact Jim Fitzpatrick in Orlando.He does a fair amount of heads ..all Mopar I think.He seems to be very knowledgeable and alwaya willing to help.
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