bolt sizes?
Thread Starter
Joined: May 2010
Posts: 33
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From: shadows of Houston TX
bolt sizes? Bought a couple of parts that came with no bolts looking for the sizes to replace them.
LS2 throttle body to manifold bolts
Coil pack bracket to valve cover bolts / studs
Front face of the cylinder head bolts ( where lifting mounts go )
Size pitch tread
LS2 throttle body to manifold bolts
Coil pack bracket to valve cover bolts / studs
Front face of the cylinder head bolts ( where lifting mounts go )
Size pitch tread
Last edited by TehGODofGreen; May 6, 2011 at 01:24 PM.
Staging Lane
Joined: Sep 2005
Posts: 54
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Not sure myself but think the TB to manifold are m6 1 TP and m5 for the coil bracket, might have to take the parts to hardware store and start trying bolts. I can try and find them in my service manual (if it lists them) later on if nobody else knows!
Thread Starter
Joined: May 2010
Posts: 33
Likes: 0
From: shadows of Houston TX
I got the fuel rail to intake, TB blade (plate) bolts. I think the valve cover to coil brackets are the same pattern as the valve cover bolt just different length. I don't have the intake yet so I can't check TB yet. I didn't want to lug fully built heads to the store for the lift brackets.
The auto parts store people don't / didn't like me testing the bolts or they think im going to steal them.
TB plate 2 - M4-0.7 x ? ( 9MM - 13MM ) I had to cut it the stores was to Long.
Fuel rail to intake 4 - M6-1.0 x 15MM or 16MM
Oil pan( Smaller bolts ) 13? - M8-1.25 x 30MM
The auto parts store people don't / didn't like me testing the bolts or they think im going to steal them.
TB plate 2 - M4-0.7 x ? ( 9MM - 13MM ) I had to cut it the stores was to Long.
Fuel rail to intake 4 - M6-1.0 x 15MM or 16MM
Oil pan( Smaller bolts ) 13? - M8-1.25 x 30MM
Last edited by TehGODofGreen; May 6, 2011 at 11:23 PM.
Buy a good set of taps/dies and you can check the sizes on the threaded holes, plus you can repair damaged threads if needed. Everyone that works on their car should have a set, they are so handy to have.
Thread Starter
Joined: May 2010
Posts: 33
Likes: 0
From: shadows of Houston TX
I might have to hit up a hardware / tool store. I know the top part of the covers were blasted clean.. then I sanded and painted might be some grit in there. I might just have to pack 1 head with me 
I'll figure it out its not impossible just thought someone would probably know off top of the head.
I'll figure it out its not impossible just thought someone would probably know off top of the head. Trending Topics
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Verdad Gallardo Thread Starter
Joined: May 2010
Posts: 33
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From: shadows of Houston TX
Valve cover to ignition coil brackets bolts were M6-1.0 x 20MM ( assuming GMs were 18.5 from what Paul posted but 20mms fit )
Engine lift brackets were M10-1.50 x 20MM
Comp cam / factory rocker arm bolts M8-1.25 x ?? ( I didn't need the length or size) just the Allen size. 7
@ sweet
The throttle body bolt will be 40MM+ then, the 30MM doesn't make it out the back of the TB holes.
Engine lift brackets were M10-1.50 x 20MM
Comp cam / factory rocker arm bolts M8-1.25 x ?? ( I didn't need the length or size) just the Allen size. 7
@ sweet
The throttle body bolt will be 40MM+ then, the 30MM doesn't make it out the back of the TB holes.
