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#1
06-23-2021, 05:53 PM
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Intake manifold flow
Has anyone ever flowed an Offenhauser 5499? I'm curious how it flows between the edelbrock p65 or even compared to a stock iron manifold.
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1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears |
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#2
06-24-2021, 05:42 AM
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The only help I can off is to post the flow numbers for the Standard Performer, as my flow test notes on from a iron Intake have gone missing at the moment.
The Perfromer flows a bit less then the iron, but the flow per runner is better in terms of balance.
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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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#3
06-24-2021, 08:45 AM
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I have not flowed the 5499 but can tell you it was .3 tenths quicker than the P65 on a 421 I built back in the 90's. Mild combo, 421 .060, 62 heads ported to 260CFM and a Comp 288H Cam. Same 750 carbs etc. Only swap was intake.
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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