4.6 NA/N20 2V cams

[PacificStang46]

I decided to go with a set of N20/NA cams my 98 GT. My question is what are some bad ass cams that sound good and perform good, I want to go big, but (streetable such as daily driven)? Also they will be going in my stock heads, do I need to change out springs or not? My mods are listed below.....

 

[WhiteStang98]

Well theres pretty much no point in going big with stock NPI heads...normally i would recommend VT Engines NA grind for ur setup but only if u were running PI heads...ur gonna need valve springs too if ur planning on running a high lift cam...i know comp makes a NPI NA grind...check them out if urnot planning on a headswap

Paul

 

[Solid Snake]

right-click, save as

VT cams (.550 232/242 114)

 

[lopey4.6]

I would suggest Comp's stage 2 NPI cams. They will give a nice lope at idle. Also Nitrous likes a good agressive street cam.

 

[Drew1287]

What about a NPI car with a blower? what cams do you reccomend?

 

[maddogg545]

right-click, save as

VT cams (.550 232/242 114)

I'm new to the cam scene. What doesn those numbers stand for? I am thinkg of getting new cams for my car and I am probably going with Comp Cams Xtreme Energy cams and springs. I want to get an aggressive cam but does that hurt drivability?

 

[WhiteStang98]

ill use the cam that are goin into my car as an example to explain

i will be running VT stage 2 NA cams

the specs are .560x.570'' lift 225/235 deg. duration 108 deg. lobe seperation

.560'' is valve lift on the intake valve
.570'' is the valve lift on the exhaust valve
225 deg is how many degrees the cam turns while the intake valve is open
235 deg is how many degrees the cam turns while the exhaust valve is open
108 deg its the lobe seperation angle

a higher lift cam needs upgraded valve springs...personally anything with over .500'' lift i would upgrade springs....a more agressive cam will also make the car idle choppier (lope) but my also need a tune to fix some drivability stalling issues....

also on a side note...im not sure that VT makes a NPI cam so u should definatly double check with scott or jim b4 i just go and order VT cams for ur
NPI car...scott and jim are 2 of the best guys in the industry to deal with...they arent just out to get ur money...they care about their customers and will do whatever they can to help them out...i recommend them 100%...if ur gonna go the comp cam route be sure to speak with Dennis Miles...

Hope that helps some

Paul

 

[maddogg545]

ill use the cam that are goin into my car as an example to explain

i will be running VT stage 2 NA cams

the specs are .560x.570'' lift 225/235 deg. duration 108 deg. lobe seperation

.560'' is valve lift on the intake valve
.570'' is the valve lift on the exhaust valve
225 deg is how many degrees the cam turns while the intake valve is open
235 deg is how many degrees the cam turns while the exhaust valve is open
108 deg its the lobe seperation angle

a higher lift cam needs upgraded valve springs...personally anything with over .500'' lift i would upgrade springs....a more agressive cam will also make the car idle choppier (lope) but my also need a tune to fix some drivability stalling issues....
Paul

Thanks for the awsome reply! If I go with comp cams stree/strip that is .550 242/246 114deg is that going to be too agressive for my setup? I'm going to swap the intake and get a higher stall conv. also.

 

[WhiteStang98]

Thanks for the awsome reply! If I go with comp cams stree/strip that is .550 242/246 114deg is that going to be too agressive for my setup? I'm going to swap the intake and get a higher stall conv. also.

if ur gonna go with comp i would go with the hot street grind....550x.550 lift 234/238 duration 113 lobe seperation....a lot of guys run those with great success...they were actually in my car for a short stint but then i changed to blower cams and now im back to na 242/246 is too much duration IMHO

Paul