N4cer

iTrader: (11)

I am having problems with the search as usual.

Can you tell me: I hear the truck LS intake manifolds are actually a better performing manifold. Can one be put on our motors if using a huge cowl hood?

bww3588

iTrader: (49)

nope. because the motor sits under the cowl of the windshield. the stock LS1 manifold barely fits under there.

04gtoBMXracer

iTrader: (26)

is it like the ls6 manifold just bigger? what size is the tb in mm's?

N4cer

iTrader: (11)

Ahh yeah. Forgot about that stupid windshield wiper cowl.

bww3588

iTrader: (49)

i dont have the exact specs all i know is the runners are longer for more torque, but inorder for them to be longer the intake itself is taller, too tall to work on an F-body

Steve Bryant

iTrader: (1)

GM High Tech Performance Magazine did a comparison a few issues back comparing the LS1, LS6, LQ4/LQ9 (6.0 L Truck) and the FAST Manifold I believe using three different aftermarket cams. The bottom line is that the truck manifold will perform better than the LS1 throughout the range with all cams. The truck manifold will perform with (approximately equally) the the LS6 and FAST through about 5,000 RPM's and then the LS6 and FAST start to pull ahead. This is my recollection of the gist of the article.

The main problem with the truck manifold on a car is hood clearance.

Steve

bww3588

iTrader: (49)

but how many cammed cars do you know of that dont make power above 5000 rpm? if the truck manifold was superior to the LSX intake, then the engineers would have found a way to put the truck mainifold on everything.