firechicken76

iTrader: (14)

I was wondering the weight differances between the 13b rew and the ls1....on another site ppl are telling me they weigh about the same....

landstuhltaylor

iTrader: (6)

i think the difference is only about 50 lbs in favor of the 13b
425 vs. 475

firechicken76

iTrader: (14)

I just dont see how thats possible...1.3 liter vs 5.7 I mean I owned an rx-8 and the 13b is tiny. like the size of a 4 cylinder.

landstuhltaylor

iTrader: (6)

you have to take into effect the twin turbos and all the supporting pieces. i dont know if it is an iron block or not but that would effect it. that engine weight includes turbo plumbing, intercoolers, and all that jazz. i saw those numbes when compact car (i know) compared an rx7 twin turbo with an rx7 that had an ls1 and an ls1 camaro. those were the numbers they quoted, even with their obvious bias

Louie83

iTrader: (3)

I'm almost positive that it is an iron block.

And rotary engines will always be larger per liter of displacement.

firechicken76

iTrader: (14)

how about a renesis? are those aluminum?

Cop Car

iTrader: (14)

its not really a 1.3 its more of a 2.6 really. becuase its essentaly a 2 stroke motor

LS1 is a SMALL motor. all aluminum heads, block and composite intake, makes up a very small and light motor