4l60e
 

ok so i put a new trans in and in 1st gear at wot there is a vibration and when it kicks down on the highway at wot i cant fig out what it is it has a poly trans mount with the 1/8th in spacer that comes with it could that make the pinon angle in corect and make it vib?

i dont think u need the spacer on f bods

thats what i thought but wasnt sure ill get under there tomo and see if that fixes it thanks

ok i guss i wont any one got any ideas?

idk ill have to look in to that tomo. thanks
i wanna say i love this site it is a great resource for all things ls1.....

ok so its not the trans its in the motor.... grrrrrr.... it seams like a miss but i dont get a miss code at all.....