LT5 Assembly Project

[tomtom72]

raising my hand from the back of the class.......I'd be right along side TomC taking notes & downloading stuff!

Thanks for taking the time to ask and do this for us!



Tom

[HIZNHRZ]

Unless I become independently wealthy in the very near future, my plans for going deep inside of an LT5 are to watch you do it. With that said, I'd really appreciate the opportunity to watch and learn.

[Chris_32212]

i shall make a peagan sacrifice to please the LT5 gods so you may have good fortune during the project. good luck buddy

Chris

[LGAFF]

I am watching the LT5 training video right now, wondering WTF was I thinking.

This should be fun, I am going to start with some pics tomorrow of what I have and some of the issues I am facing with regard to repairs, etc.

I picked up a set of ported LT5 heads, and the matching block. The block ingested a screw, so there is some damage to a few pistons, I think I will only need 1 liner and 1 piston. The heads are another story, they have 1 crossed threaded IH bolt, and they are ported alittle too much where the IH meets the head, so there is some welding warranted to make sure the IH seals properly.



LGAFF
92 ZR1
#234

[WB9MCW]

Soundz like a nice winter project. Maybe if you invite us we might swing by for a garage visit and some bench racing too boot. ???

[phrogs]

I still have to pull up the BS flag on the head bolts...

Who else here has worked on a LT5 and replaced the head bolts?

just curious

Originally Posted by phrogs

I still have to pull up the BS flag on the head bolts...

Who else here has worked on a LT5 and replaced the head bolts?

just curious

Re used the bolts in my 368 build. For the 402 it will either be studs or new bolts.

[Pete]

I can't remember how many times my head bolts have been reused.
Also know a few other LT5's reusing head bolts more then once,they all run strong with no issues.

I will take all those junk used head bolts you guys have.heheheheheh
I will also call BS on this.
Pete

[lbszr]

Reused mine two years ago with no problems.

I can't find anywhere in the gm fmm where it says to replace them as it does for main and rod bolts.

If I remember right they didn't have any taper in the middle section so they didn't look like torque to yield bolts to me.

[LGAFF]

OK here is the skinny on the block/heads.

Engine is out of 90 #702. I bought the heads, they were ported with a valve job. The short block has about 40K miles on, although it seems like it has more). Notice the port is siamesed, and althought the 2ndry port is over 36mm the primary port needs to be opened some. Also notice that the porting left little sealing surface area where the IH bolts on.