Quote:
Originally Posted by dino
what would you suspect it would dyno on the stock motor?
i'm going 5.4 4v in my Lightning and just curious what n/a numbers it could produce. my setup will have more compression than stock. forged w/ flattops and i might have the heads milled a bit since navi heads are like the grand canyon of combustion chambers.
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When I had the car at Steeda, one of the techs there (Does dyno work)
drove the car and felt it had around 330-340 RWHP as it is now.
Combustion chambers have the same cc's as mach 1/Cobra heads from what I recall.
The best way to raise compression on the 5.4 32V
is to get pistons with offset pins,
as the stock setup has the pistons .120 in the hole.
A stock Navi already has flat tops and comes in at 9.65:1 CR.
Depending on the intake, etc. you choose,
it is fairly easy to make 400 RWHP with this motor.