Any 383/402/408 Owners with LS6 Intake?
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Any 383/402/408 Owners with LS6 Intake?
Has anybody run their stroker with a LS6 intake? Do you have any numbers? Did you switch to something else and if so what? What kind of gains did you see? Thanks! Ben
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Theres a local guy (I think he's a member of the forum) who has a low compression forged 408 with afr 225s and an upper 230 duration cam running the ls6 intake in a vette. He made around 440rwhp/440rwtq out of that motor n/a. He recently added a novi blower setup and is making quite a bit more power. BUT the motor made good power with the ls6, but I'm sure you'd gain by going to a fast 90 setup.
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I had an LS6 on my 383 for a while. Made 440/410 with stock un-ported TB. Swapped to a Fast90/NW90 combo a while back. Haven't been back to the dyno yet because the Fast90 tends to leak.
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I was asking because I am putting in a 383 stroker and wondered how much better a 90/90 would be. Cost is becoming an issue and I don't want to lose too much mid-range either. Thanks for the replies!
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I ran the LS6 intake for awhile on my 408, 440hp & 437ft lbs. TQ. Ive since swapped to the FAST 90 intake but haven redyno'd. Seems like the 440 range is real popular with the LS6 intake. BTW- that was with Patriot stage III LS6 heads, comp 244/248, and a 10.7-1 CR.
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Originally Posted by Benjamin Russick
I was asking because I am putting in a 383 stroker and wondered how much better a 90/90 would be. Cost is becoming an issue and I don't want to lose too much mid-range either. Thanks for the replies!
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Originally Posted by ArcticZ28
My vote would be to go with the LS6 intake for now. I'm making 475/450 on a mustang dyno with ported 317's flowing 320/220 at .600, 244/248 cam, and the LS6/ported TB setup.