LS swap... LS7vs?

Ghostridercj7 · June 11, 2015

Ok so I have a 1987 Chevy Silverado k10. I'm wanting to go LS, and no budget... I'm a big fan of the LS7, but wouldn't be opposed to another LS that would operate better. Currently has a TH400, and np208. Has 1 ton axles and planning on running 4.88's and 43" super swamper sx's. Just looking for some insight on whether to keep the 5.3 in swapping in with a transfer case doubler, or go bigger in displacement. May even consider 6l90 swap if they can take the beating.

newdude · June 11, 2015

LQ4/9 6.0, L96 6.0 or L92 6.2 are good choices. Truck oriented as well vs. the LS7.

Chris · June 11, 2015

Any LS besides the LS7 and LS9. If you want to go big go with the crate LSX 454. Iron block and LS7 heads. It is a beast

operator556 · June 11, 2015

LSX 454R or a turbo LSX 376 would be awesome

desrtrat · June 12, 2015

i like the LS motors, but i would go with a 496 or 502 BB just for ease of install..but if your heart is set in a LS base i would go with a LSX 454.

good luck

Chris · June 12, 2015

i like the LS motors, but i would go with a 496 or 502 BB just for ease of install..but if your heart is set in a LS base i would go with a LSX 454.

good luck

How about the 572?

Ghostridercj7 · June 12, 2015

Well I would much rather have a fuel injected setup. I know the LSX 454 can be fuel injected, but after looking at the dyno charts for both motors, I believe you can get more bottom end from the ls7. And I may end up boosting the LS7 with a magnasun supercharger, and it's already fuel injected. I'm not opposed to the 454, but I do want to be able to drive down the road in this thing. Just thinking about doing something different for a change. Everybody is always putting a 454 in those trucks.

Chris · June 12, 2015

The 454 can be injected. There are places that have the parts. MSD and Holley i think have kits that come with everything to do it for the LS7 heads. Or get the injected LSx376. It is cast iron and will take. Boost better.

operator556 · June 24, 2015

A 376 LSX in my opinion is your best option. It's a great motor and loves boost. So seeing as you're looking to go with forced induction I think you should opt for the 376