Yes you can use the TB. I'm not a fan of rect port heads on heavier vehicles due to the lack of intake manifold options. It's either a better flow intake with the TBSS and less flowing heads (243's) or a less flowing intake and better flowing heads. For rect port you will lose low end torque on any of the Holley's, Car intake, LSXR, or MSD vs a Fast LSXRT.
Khaos' RCSB Thread
- Thread starter Khaos
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Well, knowing that it's a reg cab, I don't tow or haul (occasional bike 1-2x a year) 5 speed manual, what is your suggestion? It isn't a dd. I mean, I might lose torque with that setup, but I'm still gaining so much just going from the 4.8 to a 370.
Lol its not just gonna be racetroka though.
Just doing some reading, seeing a lot to support what Jake said. Anything besides a stock LS3 head setup flows too much for a 370.
Just doing some reading, seeing a lot to support what Jake said. Anything besides a stock LS3 head setup flows too much for a 370.
Because it's still a truck id be after all the torque I can get. Torque is what's fun stop light to stop light and I'm sure that's what ur after
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But that goes back to the fact that I'm already going from a 4.8 with - 10 torque to a 370.
I am probably just gonna stick with the 243s and tbss for now. Already have them and can always sell down the road to fund bigger and better things.
I am probably just gonna stick with the 243s and tbss for now. Already have them and can always sell down the road to fund bigger and better things.
This is what I would do. With what you've got you're on your way to a solid 375-400hp setup probably. That'll be tons of fun for a while and you can upgrade later
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you are gaining a lot of torque just going from a 4.8 to basically a bit smaller than a 6.2, id say you'd put down at least 410 at the wheels with a good top end
I've read a lot of threads from guys who have either boosted their 4.8/5.3 or swapped a 6.0 in front of this trans and so long as you shift slower than a grandma, it won't grenade. Seen them hold north of 500 wheel and take it. Just need to make it last til next summer really. Then I'll T56 swap and be good to go.
Look up @redhoonigan on insta. He has mild built ls1 with a nv3500 planning on swapping in a t56 soon