383astro

I have a couple of questions. First, is the LT1 block basically just a one piece seal block? if not then what are the differences? Also I have a 4l60 in my 93 right? not a 4l60e? So I can use a converter for a 700r4?

buffman

iTrader: (9)

correct one piece rear main. Yes 4l60 in a 93. 700r4 is just a less facnier name for the same transmission

siniSSter

iTrader: (2)

It is basically just a SBC block, also remember the block has passages for our reverse cooling heads.

383astro

do all 1 piece blocks have reverse cooling or just the lt1?

95hawk467

iTrader: (3)

The water pump outlets are a little different as is the timing cover for the water pump drive. The pump is driven off the cam gear

LT1powered89

Just the LT1

SAPPER

iTrader: (10)

As pointed out above. The LT1's front is totally different fron a Gen I block. But there are some very slight differences in the Cranks. I have a LT1 crank and a crank from my 90 Blazer. The snouts are different. Same diameter but the LT1 is a little longer.