Size of Bolts for Stock Valve Cover
 

Anybody know the size of the 4 bolts that secure each of the stock valve covers on the LT1 engine?

Re: Size of Bolts for Stock Valve Cover
 

They are 3/8

Re: Size of Bolts for Stock Valve Cover
 

3/8 wrench - 1/4-20 thread

Re: Size of Bolts for Stock Valve Cover
 

...and for a third answer...

1/4 - 20 x 3¼"

Re: Size of Bolts for Stock Valve Cover
 

Ahh..it's like a puzzle, I get a piece with each post. :D

Thanks guys. I just received a set of polished AL valve covers, and trying to make sure they work with the looms for the Taylor OVTC wires. If needed, I'll find some 1/4 -20 x ?? just in case the new valve covers are not stock height.

Re: Size of Bolts for Stock Valve Cover
 

LOL - Thanks.

So how many people does it take to actually install those bolts once it has taken three to state the size :confused:

Re: Size of Bolts for Stock Valve Cover
 

Hopefully just one.... :rolleyes:

Re: Size of Bolts for Stock Valve Cover
 

For extra credit, anybody know the height for the stock LT1 valve cover. Trying to understand how much thread engagement is design in, so I can pick the correct "new" bolt with new valve covers and OTVC looms. I'm assuming the threaded holes are blind into the heads.

Re: Size of Bolts for Stock Valve Cover
 

I can measure it tomorrow, and the depth of the hole.

Re: Size of Bolts for Stock Valve Cover
 

Dude, that'll be awesome. I assume you're a machinist by trade...you guys pay so much attention to details. :bow: