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#81
02-16-2026, 05:11 PM
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My ported T2 and the Holley modified by SD I borrowed from Steve C were identical on the dyno with a square bore carb. A Qjet needs a spacer for the front runners to flow better because the carb pad is closer to the top of the runners.
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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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
| The Following User Says Thank You to Skip Fix For This Useful Post: | ||
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#82
04-04-2026, 10:13 PM
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Quote:
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#83
04-05-2026, 06:58 AM
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The proper shape of the air cleaner base can add close to 6% more air flow over a crappy one as shown by these test done by David Vizard a number of years ago.
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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! |
| The Following User Says Thank You to steve25 For This Useful Post: | ||
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#84
04-05-2026, 08:22 AM
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Quote:
Becomes a low 10 sec manifold for under 5-Lbs metal, and supports 9.0:1 Street use too. Otherwise the 68-70's Factory iron Manifold is good enough for Street use, having the air-inhale isolation (5-7, 2-1, 4-3, 6-5) that the single-planes lack. I hope the Speedmaster dual-plane is "all that" the Factory Iron is, with bonus being the Fuel Injection bosses. Airhorns; itsa all true. I figure the trumpet opening is best: inlet edge is 90* from the air flow, like a musical trumpet but squat.
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95 Towncar that needs more TQ. Sold 2023: 12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#85
04-05-2026, 01:12 PM
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Aluminum China Repop HO/RAIV manifold been cnc ported by SD Performance on mine. 570 HP
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#86
04-05-2026, 05:34 PM
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That's pretty good. I've taken a few out of the box untouched and made good power with them. One made 507hp on a very mild pump gas 455 with no porting. So they'll support what the OP is asking for without any work if the rest of the combo is well thought out.
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