quick question

[96transamguy88]

hows come on the head of an lt1, where the manifolds bolt up, the outside has 2 threaded holes..... on is used for the very outside manifold bolt, but to the inside of that there is an unused threaded hole. whats the deal with that????
thanks kyle

[Morley]

The LT engine was used in different vehicles and they all had different types of manifolds, some used the inner bolt hole and others used the outer one.

[96transamguy88]

ok.... thats kinda what i thought..... cuz my pacesetter lt's use the two inner bolts... but thanks for the help. kyle

[FormulaLT1]

I believe but am not positive when I got my corvette block (which had its manifolds still on). It used the outside bolts.

Edit- X that. I believe those holes are used for mounting brackets for the accessorys on some models.

[wrightz28]

Not sure if were talking about the same holes here, but the cylinder heads have holes drilled at each end and were used to remove/install the engine.

[96transamguy88]

no, these are the what the stock manifolds are bolted to the heads.... my pacesetters are set up where they use the inner of the bolt holes.