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Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

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Old 09-18-2004, 10:51 PM   #1
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Join Date: Nov 2001
Location: Vancouver, Wa
Posts: 205
Car: RED 1986 IROC-Z28
Engine: 350 5.7L
Transmission: TH 700R4
Axle/Gears: 3.23 10 Bolt

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Wieand stealth or Edel airgap??

just wanted to get some opinions on these two manifolds. Would I see a noticeable gain from switching to an edel airgap? Thanks for any help
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86 IROC, 350, 9.5 compression, TH 700R4, 1 5/8" hedman headers, 3" exhaust, Edelbrok Air Gap Intake, Comp Cams XE 268, Holley 670 Street Avenger Carb, 1.6 RR, 383 fast burn heads, subframe connectors, Spohn lower control arms, poly bushings, ac and smog deleted
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Old 09-18-2004, 10:59 PM   #2
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Location: Denver, CO
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Car: cleanest '86 sport coupe around!!
Engine: 401ci with twin 76mm turbos
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With your engine mods, I would suggest the air-gap...even more so if its gonna be a daily driver. You'll get better low end torque and overall better driveability, anything besides advantages I mentioned is not worth it for a true daily driver.
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Old 09-19-2004, 01:59 PM   #3
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Join Date: Jan 2002
Location: Moscow, ID I need my own machine shop
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer

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I don't know but i'm swapping from as stock 346250 Iron Q-jet intake to a Weiand Stealth. I have a 1" carb spacer/carb adapter under my Holley 600. Getting rid of the adapter alone will probably add some power, due to the better flow characteristics.

I will let you know how it goes!
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LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
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Last edited by ME Leigh; 09-19-2004 at 02:04 PM.
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Old 09-19-2004, 01:59 PM
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346250, 7502, 8208, air, edel, gap, intake, rpm, sale, spacer, stealth, steath, stelth, vs, wieand
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