LS1 questions

seabass2004
05-22-2004, 09:30 PM
Are all the LS1s all aluminum or just the heads? and what transmission's are in the 6 speeds? Borgwerner or tremec?

SFB767
05-22-2004, 10:29 PM
The 6 spd. transmissions are Tremecs.

I know the heads are aluminum, but I can't remember what the rest of the engine is made of.

Loony
05-22-2004, 10:41 PM
FBody and Vette blocks are all aluminum...the truck motors are iron...

PhantomTA
05-23-2004, 12:07 AM
Originally posted by SFB767
The 6 spd. transmissions are Tremecs.

I know the heads are aluminum, but I can't remember what the rest of the engine is made of.

Not all of them are tremecs :) mine isnt :)

NBS4
05-23-2004, 12:18 AM
When did Tremac buy Borg Warner? 1999?

96SFLZ
05-23-2004, 01:08 AM
Originally posted by NBS4
When did Tremac buy Borg Warner? 1999?

I think so...

'98s had the BW and '99-'02s had a Tremec (95% sure).

D James
05-23-2004, 02:39 AM
which one is stronger tremic or BW