Ok this may seem dumb to some people but I can't figure it out!

I've done a search about a 100 times

I'm trying to install my turbo kit and I can NOT figure out the size of the nuts for the 3 studs on each manifold where the crossover or whatever bolts to!

Please help that's all I need then ill erase this thread I'm getting tired of running back and forth to the hardware store.

The threads are a little rusted up so that is probably part off my problem if some one could give me the exact specs for the nuts you'd make my life so much easier thanks!!

 

3/8-16

 

they wernt 3/8-16 they were even finer thread then that

but i got pissed off removed all the studs taped the holes and put all new studs in with nuts to fit them

problem solved!!!!!

thanks

 

I'd have thought it would use a metric fastener, or is it just the engine on these cars that are metric ?

 

So what thread are they?

 

I bought 10x1.5 and they wouldn't work. An 11x1.5 die goes on nice but I couldn't seem to find that size nut anywhere.

 

Mine are M10X1.5

 

I just took mine to the auto parts store and they had it in about 15 seconds flat. Even had the correct knurled nuts.

 

and so what size are they ?

 

haha i just took my manifold to the hardware store i got M10x1.5 too, that was for my stock manifods off my ls1 not 6.0's but im sure its the same anyway, make sure the stud is clean

 

fyi 3/8-16 and m10 1.5 are SUPER close, once you get 4 turns in is when youll feel or see the difference but most people will just shove it on in

 

I had no idea. I'd be willing to bet it's metric though.

 

Kinda funny - 12 posts, many solved the problem, but we're still not sure

 

LMFAO because this was the ad banner at the bottom of the page!!!!!

 

M10x1.5 is the right size for both car and truck manifolds

 

why the hell are mine only going 3 turns and stopping?!

 

Maybe you have the wrong size...or someone has changed them

 

maybe i should think before i try things! lol my manifolds came coated and while the studs "looked" ok, they needed to have a wire brush taken to them and then the nuts went on, snug the whole way up but they were the correct size....that being M10 x 1.5's.

glad i found this thread and thanks for the input.