Join Date: Sep 2000
Location: EFI Performance, MD
Truck engine needs a cam and head swap or it won't be any more powerful than LT1.
TrickFlow has some cams less than $300 for LS. Get some 5.3 heads to boost compression.
You'll also need an LS car intake manifold to fit the motor in the Impala bc truck intake is too high.
In addition, you'll need all the accessories off of the van and headers.
SpeedEngineering makes a good inexpensive set of headers from LS swaps.
I'd also consider replacing the pistons with flat tops since it is the lower compression LQ4.
Last edited by Blue Wail; 05-22-2019 at 10:48 AM.