Alright, today i picked up a 5.7L short block. The guy told me it came out of a 1998 GMC... were these engines considered ls1's? that would be a gen 3 right? if not..... what is it?
Nick
Alright, today i picked up a 5.7L short block. The guy told me it came out of a 1998 GMC... were these engines considered ls1's? that would be a gen 3 right? if not..... what is it?
Nick
that is not a gen3/ls1 based engine. Its a vortec engine and shares no parts with the LS1 engine. The 5.7s were bad about leaking intake/coolant gaskets.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
ive been running the block casting numbers... and im getting all kinds of contrasting info. one site says my numbers are from a '95-'96 2 bolt main, one site says its 95-2000 2 or 4 bolt main goodwrench crate motor... wheres a good siteto look at this stuff?
nick
no matter where ya look its still not an ls series, its a gen 2. Think old basic 350 with fuel injection and some other modern updates. LS's started in '97 with the Vette, then in '98 they landed in the F-Bodies and finally in '99 they were put in the trucks and suv's
2006 SilveradoLittle Black Bitch
ok this is making more sense now. its a gen 2, 5.7 350, parts will still be plentiful which is what concerns me. the guy i bought it from said it came from a '98 GMC... so im guessing a sierra sieres pickup, does that sounds right.
yes... sounds like the 350vortec to me
09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,
LOL no SUV's until 2000.Originally Posted by sleeper1500
Hey Greg.....the two engine families share bore spacing and rod bearing diameter.
my mistake
2006 SilveradoLittle Black Bitch
these were gen 1 not 2 engine right? gen 2's would be the lt1 ones right?
I believe you are correct. I mis=typed. Meant Gen1, Gen2 were the reverse cooled LT1 engines in the early mid 90s until 97.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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