5.3 with LS6 cam
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I am not the smartest guy but I don't think the truck intake will fit under a stock fbody hood. I also have read that the truck intake out performs the LS6 intake but I have no proof, and no time to try and find it.
Would be interesting to see if that is true, from what I have always heard the truck intake makes as much or more hp then ls1 with more torque, while ls6 makes more hp and about the same torque.
TECH Enthusiast
Joined: Sep 2005
Posts: 503
Likes: 54
From: TX
What I said was a joke, I looked through the Hot Rod page and did not see where it said truck intakes are better then LS6's. I did however see where it said the LS6 is a little better then the truck though. As for the LS6 pulling better after 6500rpm, LS6 intakes usually fall on their face right around 6500rpm. Truck intakes are designed for low end grunt I.E. it's in a ******* truck. While they're not a POS in on the high end they do not out perform a LS6.
My friend with a stock 5.3l in his 2003 blazer switch from a truck intake to a LS1 intake for looks. Just happened to run much better at the track, went from 13.9@97 to 13.7@99.
you could sawp it for a hotcam or ideally asa cam and still use the same valvesprings. the cost of selling yours and buying one of those would be minimal but the gains under the curve and up top would be nice.