slick88

is it true that porting and polishing only make good power in high reving motor and does it make any power on stock 99 cobra motor

ponyman1969

um, porting and polishing make even more sence with a power adder but thats not to say that its not a good idea on a stock or low mod. car. its all about the air flow. i'll take as much as i can get.

slick88

how does your motor like the turbo charger. do u have any internal work. im trying to fined out about how much boost i can run from turbo on stock 99 cobra motor with few mods.

slick88

how does your motor like the turbo charger. do u have any internal work. im trying to fined out about how much boost i can run from turbo on stock 99 cobra motor with few mods.

brent_cosenza

thats not a turbo its a vortech supercharger

brent_cosenza

6-8 psi is the norm for a stock gt(internally) i'd imagine with the cobra it would be somewhere around 10 psi of boost

Sxynerd

Um wrong, 10lbs of boost is totaly safe and the average hp w/ mods (mild cams and such) is around 400rwhp. If I'm not mistaken some combras have a compression of 10:1-10.5:1 so your tune needs to be dead on with those. Either way your still limited to about 425rwhp with stock internals.

trickdriller

A turbo would be expensive and difficult to install. It might be in your best interrest to put a centrifugal supercharger one there (like the one pictured above). The work like a turbo, only with a belt; not the exhaust. Check out the "Pipes, Boost and Juice" section to learn about that stuff.

Hope that clearifies some things.

brent_cosenza

i said stock engine you better check again to be stock its around 6-8 psi of boost...the weakest link in the 4.6 is the connecting rods which tend to break around 450hp so a safe conservetive tune would call for 6-8 psi....on cobras they have better internals and heads so 10 psi would be safe

2002GTAUTOVERT

i like the centri.. but i had to go with the twin screw.. i like to make sure i win the races off the line and not near the end of the race.