heads call for autolite 3923 but i want rapid fires???
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Junior Member
Joined: Aug 2014
Posts: 11
Likes: 0
From: FL
Car: 89 formula
Engine: 350 tpi
Transmission: T5
Axle/Gears: 3.73
heads call for autolite 3923 but i want rapid fires???
I have a 89 formula with a new pre 86 gm crate motor and i purchased a set of PRE 86 skip white pro comp ALUMINUM heads a while back. Im running a tpi setup with slp runners, ported lower intake and ported plenum to match the runners, bosch 3 24lb injectors with adj regulator, 52mm tb and a comp 480 480 with 1.6 rr, edelbrock headers and dual flowmasters. Skip White recommends the autolite 3923 or NGK4544 for a colder plug but I would like to run ac delco rapid fires (my personal favorite) or regular delco. I tried researching on here and google and I couldnt find anything. Anyone know what part number rapid fire plugs or regular ac delcos I need? THANKS!!
Joined: Nov 2008
Posts: 2,108
Likes: 183
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: heads call for autolite 3923 but i want rapid fires???
spark plug cross reference....http://www.sparkplug-crossreference..../AUTOLITE/3923
Supreme Member
Joined: Feb 2006
Posts: 1,777
Likes: 27
From: Sanctuary state
Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: heads call for autolite 3923 but i want rapid fires???
imo plug is a little cold running those same ones myself on a 383 with a large cam/heads/compression was much happier (made more power)with the 3924. Cheap enough to swap out though if you dont like one or the other
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