dimebag

yo, looks like you have alot of questions... tell ya what... make it easy, lol.. pm me w. a list of ur questions, since i just did this i should be able to answer all of them....

nacanitihs

so does anyone know about the valve springs for this cam? its very similar to the F-303 cam. (same lift). like what is good for: Installed Height (in). Seat Pressure at Installed Height (lbs). Open Height (in). Open Pressure (lbs) and outer/inner spring diameter

like ive been askin for a while...

mjr i was told you should kno...

mjr46

what I'd do since both the cams carry the same specs and require near identical open and closed pressures is use the f-cam springs cause it will insure no machining is needed and you'll need the matching retainers and locks.....the only difference between the two cams is the lobe seperation-= LSA......the cam you want and what dimebag bought will be more speed density friendly and have a better idle quality...f-cam needs to be used with mass air car

Joel5.0

http://store.summitracing.com/partde...art=CCA-987-16 .

my77stang

those look like a good choice for most people here, 120 lbs @ seat is right where ya wanna be, maybe 130 if you wanna rev a tad higher

telsonman

i don't think he can use dual springs on the 40p's because of how thick the valve stem seal area is. if they do fit, there won't be much room for error

my77stang

cutting the guides down is a cheap and easy process

nacanitihs

i wanna go single spring. and my car is an 89 so it is mass air.

should i just go w/ the f cam cuz it is cheaper then? or will i be happier w/ the comp?

Joel5.0

Go to Thumper of Orange Park and email Mike for a "drop-in" kit of springs/retainers/locks that will work with the Comp Cam. They are single with damper, and will not require any mods to the heads.