I'm new to building Chevrolets being that I've been an old Mopar guy for years but I started building a 96' Camaro and this may sound like a dumb question to some but here it goes. Did the 5.7L LS1 blocks come from the factory as 4-bolt main motors or did they all come with 6-bolt mains with the two cross bolts coming in from the side of the block? I see that Summit Racing has 6-bolt blocks and wondered if that was an aftermarket thing or if the blocks were 6-bolt main from the factory? Thx. Greg

 

NO idea on LS1 without doing google research.

The LT1s from what I've read - 4 bolt mains on vettes, but 2 bolt on f-body, etc, etc.

You might find your answers researching over at ls1tech.com or some ls1 specific sites.

So your dropping a LS1 into your 96 F-body?? What happened to your LT1?

 

The car is originally a V6 car. I picked it up for next to nothing. The body on it is in excellent condition. I chose to go with the LS1 because it seems like there are a ton of performance options for them over the LT1.

 

Yeah, LS1 is the latest and greatest and definitely now with a longer running production than the LT1.

 

Following up, you guys probably have already found the answers, but for those who did not (including me 10 minutes ago) and is in search - the answers is 6 bolts. I've found the answer here https://engineswork.com/engines/chev...s1-engine.html