305 chevy mildly modded spark plug gap??
Thread Starter
Senior Member
Joined: Sep 2007
Posts: 517
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From: Orlando, FL
Car: 1989 Camaro RS
Engine: 2.8l v6
Transmission: 5 Speed Manual
Axle/Gears: Probably the stock 3.42
305 chevy mildly modded spark plug gap??
what would be a good place to set my gap for a vortec 305 with a 65k volt ignition, a summit 1103 cam, headers and a holley 4160?
thanks
miguel
thanks
miguel
Thread Starter
Senior Member
Joined: Sep 2007
Posts: 517
Likes: 0
From: Orlando, FL
Car: 1989 Camaro RS
Engine: 2.8l v6
Transmission: 5 Speed Manual
Axle/Gears: Probably the stock 3.42
Re: 305 chevy mildly modded spark plug gap??
stock spec for the vortec or stock spec for the original l69? because i think the gap for the vortec is .06", and the l69 is around .04"?
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: 305 chevy mildly modded spark plug gap??
Split the difference? lol... in reality, it won't make any noticeable difference if you go .040, .050, or .060.... though a smaller gap will improve life expectancy of various ignition components.
Junior Member
Joined: Oct 2009
Posts: 95
Likes: 0
From: Seattle Wa
Car: 64 elcamino
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.73
Re: 305 chevy mildly modded spark plug gap??
I am at 0.40 gap in my 305 with a red cam (1103)from chevy an a 55 throttle body mathced 24 pound injectors ,,,, an i get 19 mph highway..... 12 .31 in a 1/4 mile going to a 75 throttle body i shoud get low 12's in a 1/4 mile....
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