plug gap for 13 1/2 to 1 comp

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beckysracing · #1 Post by **beckysracing** » Sun Nov 18, 2007 10:59 am

i was wondering im running the autolite 3933 plugs .what would you recomend setting the plug gap at ? . i have a 408 windsor built by john bennett racing it has 705 hp with such goodies as a 705 lift solid roller cam victor jr fully ported cly heads with 208 int valves and super victor intake and a pro system 1000 cfm carb a aeromotive 1000 fuel system and ross pistons with 13 1/2 to 1 compression with a moroso vaccum pump.thank you becky.......

mytmouz · #2 Post by **mytmouz** » Sun Nov 18, 2007 11:18 am

What ignition setup do you have?

beckysracing · #3 Post by **beckysracing** » Sun Nov 18, 2007 11:19 am

msd 6al digital

mytmouz · #4 Post by **mytmouz** » Sun Nov 18, 2007 11:20 am

Any power adders?

beckysracing · #5 Post by **beckysracing** » Sun Nov 18, 2007 11:21 am

no power adders

mytmouz · #6 Post by **mytmouz** » Sun Nov 18, 2007 11:22 am

sc racing · #7 Post by **sc racing** » Sun Nov 18, 2007 1:11 pm

Heres what MSD recommends:

beckysracing · #8 Post by **beckysracing** » Sun Nov 18, 2007 7:06 pm

thanks i was gapping my plugs at 34 and i would get a missfire at 7000rpm now i have them at o.25 and it helped my problem thanks again

cashier · #9 Post by **cashier** » Sun Nov 18, 2007 10:51 pm

holy chit!!!!! i remember racing you on telegraph yrs ago with the same car. that was 12yrs ago. i won lol.. it's cool you still have the car as for plug i would start with .030 with your comp or it will try blowing the flame out...

beckysracing · #10 Post by **beckysracing** » Mon Nov 19, 2007 7:02 am

lol yes this was my first car had it for 19 years now was a 4cyl when i got it guess we need to race again

racecar100 · #11 Post by **racecar100** » Mon Nov 19, 2007 12:18 pm

For High rpm I use .025 gap on the plugs

cashier · #12 Post by **cashier** » Mon Nov 19, 2007 7:36 pm

it didn't have no 4 cyl when we raced.. we were going south between 5-6 mile i had a blue nova. the funny thing is i have the same car still. back then 13?? know 8.7s man those were some fun days. hope to see you next yr at the track i will come over and say hi. you could drive well for a girl just kidding lol.

beckysracing · #13 Post by **beckysracing** » Tue Nov 20, 2007 2:00 pm

well i sure hope you come say hi would love to see your car now and yes them were the good old days i still go out to telegrafh with my car on the weekends and even drive better now lol for a girl

plug gap for 13 1/2 to 1 comp

plug gap for 13 1/2 to 1 comp

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