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ok real quick one here. tried searching but here i am. just need to know the thread size so i can get a thread chaser for the spark plug hole.
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99 Grand Am GT
3400/3500 -Solid trans mount--TCE 65mm T-body---85mm LS2 maf---1 1/4' TCE intake spacers with 3400 upper--SLP Catback with flowmaster 80--TOG headers
Modded 3400 lifters with LT1 springs---Comp Cams 26986 Springs
1357 cam 227 233 .050 dur 515 515 lift 112 lsa
15.232@88.85mph on stock 3400---New time to come
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14M I would think 41940 acdelco is stock replacement.Last edited by Juglenaut; 04-18-2008, 12:21 AM.I am back
Mechanical/Service Technican -
cool thanks i found a 14mm thread chaser the other day while at the parts store. i just want to make sure the threads are free and clear of crap.sigpic
99 Grand Am GT
3400/3500 -Solid trans mount--TCE 65mm T-body---85mm LS2 maf---1 1/4' TCE intake spacers with 3400 upper--SLP Catback with flowmaster 80--TOG headers
Modded 3400 lifters with LT1 springs---Comp Cams 26986 Springs
1357 cam 227 233 .050 dur 515 515 lift 112 lsa
15.232@88.85mph on stock 3400---New time to come
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