LS2 truck intake
12-18-2005, 06:50 PM
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LS2 truck intake
Assuming all issues such as connecting the fuel rails and injectors to the existing fuel system, wiring up the new TB to the existing harness, and putting together a CAI, does anyone think that a LS2 truck intake manifold and 90mm TB would be of any benefit on a heads/cam 5.3?
I have heads on the way, and may upgrade to a bigger cam, just looking for a way to squeeze all available hp out of this thing N/A. I've also considered swapping to a LS6 or FAST 78, but the additional work to get the accessory drive out of the way is too much, plus everyone says that power will be lost in the low rpm range.
If I could find an intake manifold used, or if anyone has the part number, I'd be willing to try to figure this out and test it for the truck community.
I have heads on the way, and may upgrade to a bigger cam, just looking for a way to squeeze all available hp out of this thing N/A. I've also considered swapping to a LS6 or FAST 78, but the additional work to get the accessory drive out of the way is too much, plus everyone says that power will be lost in the low rpm range.
If I could find an intake manifold used, or if anyone has the part number, I'd be willing to try to figure this out and test it for the truck community.
12-18-2005, 08:15 PM
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I heard that it only has a bigger diameter on the TB side then gets smaller on the inside. I know Big Tex had talked about this before. I haven't heard of the intake making a big difference, I dont think anyone has tired it though. I know Allen Nelson told me he saw a 10-15 HP gain with the Fast 90/90 combo on a 408.
12-18-2005, 10:32 PM
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Originally Posted by CrabhartLS1
Suffice to say the LS2 intake is not an upgrade, even to an LS1. They don't flow that well.
Yes, I know that the car LS2 manifold is not that great compared to even a LS6 manifold, but what about the LS2 truck version v. regular truck intake?
Matt, the FAST 90/90, do you know if that was v. a regular truck manifold?
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12-19-2005, 05:25 AM
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Originally Posted by 1slow01Z71
1200 for 15hp sucks IMO. I think that this conversion wouldnt be worth the time/money it would take to do it but if you feel you must get some dyno numbers please.
