RE: 4x4, 4.3L to ls1 5.3 need assistance
 

the swap motor mounts have slotted holes to adjust

http://www.s10v8.com/store/images/LS1S10.jpg

RE: 4x4, 4.3L to ls1 5.3 need assistance
 

Looks pretty close to what the guy had, unless these have been updated... The guy did his swap a year or two ago.

RE: 4x4, 4.3L to ls1 5.3 need assistance
 

yeah holly crap this was a long time ago well that sucks lol

RE: 4x4, 4.3L to ls1 5.3 need assistance
 

If I keep the Blazer, I'm gonna try for a 6.0 with AFM or a 6.2 :D
Depends on if I can get the transmission beefed up enough... Damned 5-speed being built weak!

RE: 4x4, 4.3L to ls1 5.3 need assistance
 

go with a T-56 and good luck finding someone who can Keep the AFM I don't even think current parformance can and he's the go to guy and the 6.2 i don't even know if the T-56 will hold up to it thats why they are running the Tremec 6060 six speed trans now. Also Aftermarket performance cams are hard to find for the AFM motor i remember hearing that the cams were different i know that the IV gen LS motor has a different 1 bolt cam instead of a 3 bolt cam like the gen III motor but i don't know about the AFM ones being different.

RE: 4x4, 4.3L to ls1 5.3 need assistance
 

I can't use the T-56... It doesn't bolt to the transfer case ;)

And the cost to change the output shaft and tailhousing so it WILL fit... It's really expensive, lol.

Also, there's not a lot of extra performance stuff I'd be doing... Mine's a DD, and I'm in it for the fuel mileage as much as the power... My bosses 6.0L VortecMAX 4x4 gets better gas mileage than my the Blazer, lol.