Nissan LS240

iTrader: (1)

porting and port matching is 2 different things, intake holes in the intake mani are usually bigger than the intake ports on the head, for optimal airflow the intake ports on the head should match the intake holes in the mani,

JakeFusion

iTrader: (7)

You have that reversed. The intake is usually smaller. You can open it up so there's no turbulence.

The FAST matches pretty well to stock heads, but any aftermarket ones and you might look at a port match. I don't think porting it is worth a whole lot of HP on those despite what is said - certainly not 10HP. Most of the HP comes from matching to the ports on the head and that might be worth 5-7HP. Not necessary but a way to eek out every last drop of power.

mercccc

i had that 235/243 cam but on a 111 in a 6.2 stock bottom end and prc 5.3 heads and went 126 mph in the quarter. the car was a bit over 3700 pounds i believe.

ZigLoweWS6

Ive pretty much decided on the cam and now I have to choose the heads that will yield the most horsepower. Im down to PRC 225/227 or TFS 220/215/225

garygnu

choose the cam last,after you have bought all the engine parts.the TSP PRC heads should work with stock rockers.

Detoxx03

iTrader: (14)

Made 453 on a 383 through a auto with a yank ss3600 on stock heads. Get a good set of heads and match the cam to it. Getting a fast intake will make it that much better.

64post

iTrader: (5)

Lean to the smaller one, bigger is not always better. Smaller, you'll always get better drivability and easier to tune. Not much diff. between those cams anyway, just sayin.

96capricemgr

iTrader: (1)

If you go "too small" you still enjoy the car just want a bit more. Seen a lot of guys go "too big" and not like compromised manners, or the rest of the car can't use the rpm needed and the car is not as quick as it could be and those things take the fun out and I have seen it more than once where once someone fails to enjoy a setup they lose interest.