kylebuck89

I just took my motor out of my car and it is a 2 bolt main... i thought corvette lt1s had the 4 bolt main.

jakers

I have heard on this forum that a few two bolt mains ended up in Corvettes off of the assembly line. According to some of the feedback I received, GM ran out of 4 bolt mains a few times on the assembly line as substituted 2 bolt mains to get cars finished and onto the showroon floors. BTW a 2 bolt main can be rebuilt and handle up to 400+ HP or you can beef it up and turn it into a four bolt main with some machine work.

kylebuck89

Im just going to drop and LT4 into it..
its cheaper than rebuilding the one that spun a bearing... and what kinda hp would that motor put out with a two bolt main?

aboatguy

Same as the engine would put out with 4 bolt main. For most applications having 4 bolt mains over 2 bolts is a moot point.


Most LT1s had 2 bolt mains (B-body and Fbody) Its relatively inexpensive to convert a 2 bolt LT1 into a splayed 4 bolt main engine and splayed 4 bolt mains are stronger than the factory style.

Where are you going to find a complete LT4 for less money than rebuilding your LT1 ?

kylebuck89

My dad found a place in colorado that has a few left.. they are selling 4 around 4100 dollars or so... and it has the 3 year 100,000 warrent that if it breaks the DEALERSHIP has to work on it

DrEvil11417

my '86 came with a 2 bolt main as well, stamp on water pump boss says it's the original motor too.. until then i could have sworn vettes came with 4 bolts

redvette6spd

You have a pm

aboatguy

The L98s were 2-bolt mains, corvette LT1s are supposed to be 4 bolt .

mseven

absolutely !!I like the bowtie block and the new lsx blocks w/6 bolt and raised cam tunnel cnc'd etc. is way cool!