94gtcobra

Im going to be running my Gt-40P heads with 1.90/1.60 valves, with a CRANE

2031 Cam, but in the damn website it says they recommend with 1.7 roller

rockers but some people tell me to just go with 1.6 roller rockers because of

piston to valve clerance. I wont be getting very much performance with 1.6

roller rockers. The cam specs are as followed the duration is (2.14 I, 2.20 E)

valve lift is {.513 I/529 E## this is using 1.7 roller rockers. What is the best

cam i can use with out any PTV clerance, So damn hard choosing cams, If i

dont go with the CRANE 2031 , what do guys think of the Ford Racing letter

cams, I was thinking maybe B or E cam. Most important it has to be SMOG

LEGAL.[/align]

OnyxCobra

you're beating yourself up over this too much. You don't have to use 1.7 rockers with that cam, it's just the specs they list for it (ie lift) are given with the use of 1.7 rockers. The only thing that will change with 1.6 rockers is the lift. You won't notice a big difference regardless of rocker choice. That being said .513 lift isn't a lot and you should be fine running that with those heads on the stock bottom end.

94gtcobra

screw it, im gonna go with this damn cam, what if i use the E-303 will it be the same thing using CRANE 2031.

OnyxCobra

It won't be the same because it's a different cam. E303 with 1.7 rockers is a lot of lift and will be pushing it, if you go with the E303 use 1.6 rockers.

94gtcobra

I currently have the 1.6 crane stud mount roller rockers, and if i use the E-303 with1.6 roller rockers will it be better than the Crane 2031 with 1.6 roller rockers.

OnyxCobra

I'd have to guess but I'd say the E303 would make more power, it has more lift and duration than the Crane 2031. If you're not planning on getting a tune right away the E303 may give you some idle issues, our stock computers are touchy.

94gtcobra

I have about 5 hours to decide either cams, if the e cam makes more power then i would probably be better, Is it smog legal for AUTO cars, i have a 3500 stall converter.

91hatchgt

Have you ever looked at the Crane 2030? I like it a little bit better than the 2031 or the E303. Might check it out.

OnyxCobra

I wouldn't rush buying parts for your car, you won't be as happy.

94gtcobra

I have my whole H/C/I set up ready to go, the only thing i need to buy is the cam, and timing chain. I just need to decided what cam i want.