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Author Topic: 90mm accufab too big for my 347  (Read 714 times)
theYman
2stroke
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Posts: 6


Location: Shelby Ohio

« on: May 01, 2017, 09:58:35 pm »

347 stroker with trickflow 170 twisted wedge heads ported slighly to match Trick Flow R intake. Custom Jay Allen cam .224/.237 duration @.050 .574/.566 lift w/1.6 rockers. Pro M 80 maf for the 30 lb injectors.
Long tube 1 5/8 headers. 3.73 rear . Astro A5 with 2.95 first gear.
 Currently car has a 70mm tb and runs outstanding. However found a deal on 90mm a TB and may try it.
Will it be a mistake?
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wywindsor
Big Block
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Posts: 1539


Location: casper wyoming

« Reply #1 on: May 01, 2017, 10:32:54 pm »

No, It should allow more air in which is always good
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David Claflin
Adv_SBFTechie
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Posts: 7879


Location: Redneck Riviera (Ft Walton Beach Florida)

« Reply #2 on: May 02, 2017, 09:14:02 pm »

It'll want to accelerate faster, so will require a little more finesse on the throttle. My son has an 86MM SVO on his 331, and that kind of gave him some trouble at first.
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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