Well, I bought some replacement AC delco plugs at the local store. They gave me .045 gap plugs, but I looked under the hood and in my manual. They say .035. Have to return them (for a 305 TPI)?

Second question involves how the hell do you get to the rear plugs on the passenger side? Is there some trick I'm not seeing?

Thanks, Dave '91 T/A (305 TPI), '91 GTA

 

Go at it from under the car, it isnt incredibly hard, but definately a pain in the *** . Go by what our emmisions label reads unless you have mods.

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With this car, it's never a question of "can I...", only "will I..."!

 

plugs don't come pregapped, you have to do it, or at least check. there is a good chance the plug maker will gap them to fit most applications, but there is a chance they won't be gapped to yours. the gap can also get closed in shipping and handling the plugs.

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ICON Motorsports

1st & 3rd
MM Black Diamond 538 F&AM

 

Hey not to barge in with a question but I was wondering if I would notice any differance if I opened my gap up a little more. Stock is .035 and that's where I've got them gapped at now. My Mods below

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'87 Trans Am:
(Engine)
305 TPI
180 Degree Thermostat
JET Fan Switch
TB Bypass
Accel 300+ 8.8 Racing Wires
Accel Super Coil
Bosch Platinium Plugs
Custom Ram Air with K&N
Removed Emissions Equipment & Cat.
(Stereo)
Full Kenwood Excelon System

 

if you open the gap you'd expose more spark area to the a/f mixture, the down side is if you don't have strong ignition you weaken the spark. i usually try to go .005 or .010 over stock with a stronger coil.

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ICON Motorsports

1st & 3rd
MM Black Diamond 538 F&AM