bolt sizes for head at front/back of engine
Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
bolt sizes for head at front/back of engine need to run to the hardware store; i was thinking about grounding at the front or back of the passenger side head. would anyone happen to know what size bolt i need? for some reason i think it's metric, maybe M11 x 2.0 but I'm not sure:
thx
thx
Teching In
Joined: Feb 2008
Posts: 48
Likes: 2
Flange Head Metrix Hex Bolts I like the flanged headed metric bolts. A good source is mcmaster-carr(mcmaster .com). Depending on length <$10/25. Pt# 98093A619.These are good quality metric Grade/Class 10.9 which I believe is the equilavent of SAE grade 9 bolt.
I also like to drill and tap the above bolts and insert #10-32 stud. Add a insulated band clamp and locking nut as shown. Very helpful for securing wiring harness across back of engine head/block.
I also like to drill and tap the above bolts and insert #10-32 stud. Add a insulated band clamp and locking nut as shown. Very helpful for securing wiring harness across back of engine head/block.
Here is a list of all the threaded holes in the OE LSx heads;
Spark plug 14x1.25mm
Coolant temp port 12x1.5mm
Ancillary/accy holes 10x1.5mm
Exhaust manifold 8x1.25
Rocker arm mounting bosses 8x1.25mm
Intake manifold 6x1.0mm
Valve cover hold down 6x1.0mm
Steam tube hold down 6x1.0mm
Spark plug 14x1.25mm
Coolant temp port 12x1.5mm
Ancillary/accy holes 10x1.5mm
Exhaust manifold 8x1.25
Rocker arm mounting bosses 8x1.25mm
Intake manifold 6x1.0mm
Valve cover hold down 6x1.0mm
Steam tube hold down 6x1.0mm
