i have a '90 lx 5.0 that i'm turning into a race car. it currently has no motor or trans in it. i have a '77 302 motor that i was going to beef up and stick in it with a C6 trans. i was going to put in a comp cams XE 284H cam in it. anything good or bad on these cams? let me hear your opinions.

Erik

 

WHats the rest of the combo? Rear gear, heads, converter? Also a C6 is not really needed, unless you are making a ton of power a C4 might be a better choice since it will rob less power. Unfortunatly the 77 302 is not a roller motor so you either need to convert it or stick with a flat tappet cam. Can you post the specs of that cam including lift and duration at .50. I don't really feel like looking it up on Comps site.

 

Yeah a c-6 is a bad choice, its VERY heavy, not to mention youll need to modify the the trans crossmember and driveshaft as the c-6 is like a foot longer than the trannys that were put in fox bodied cars. As for a cam we definitly need more info, especailly what heads/intake, and exhaust. Im not concerned with the rear gear as it should be the LAST thing you do.
-P.

 

i'm putting a set of ported and polished '93 gt heads on it with double valve springs good to a .570 lift. i know its not a roller motor and i don't want it to be. i'm going with a set of 1.6 roller rockers, edelbrock torker II intake with a 600 holley, 10:1 comp, full length headers, 3" duals w/ flowmaster super 40s dumped out the front of the rear tires. i'm going with a set of 3.73s, a C6 trans with a shift kit and a 2800 stall. this car is not going to be put on the street, so i'm going to rip out the computer and all the wiring and rewire it myself with only the essentials. as far as the trans, automatics don't really hold up to me well, for example an aode on a 302, so i'm going for the C6 as its strong enough to hold up to me. i don't think theres any difference in length, i believe they used C4s in the early fox bodys and i think they are the same length as a C6.

Here's the specs on the cam:

HYDRAULIC: Street/strip, 2800+ stall torque converter, headers, gears, has rough idle. RPM Range: 2,300-6,500 RPM.

Camshaft Description:

Part Number CL31-250-4/CL 31-250-4
Grind Number FW XE284H-10

Specifications:

Valve Lift .0.541" 0.544"
Duration At 0.006" 284° 296°

These specs are for the cam installed at 106° intake center line:

Duration @ 0.050" 240° 246°
Lobe Separation 110°
Recommended Valve Springs 986-16 or 987-16

with this setup, is there any possibility of seeing 12s with it?

 

If it's going to be a track only car why are you going with such a high gear and low stall converter? Take advantage of the cams ability to rev and put in a 3500 rpm converter and a 4.10 gear. I stand by my statment about the C6 being unneeded. The 93 GT heads are E7's and really not worth putting any money into, find a set of GT40 or GT40 P heads, they are good for an easy 25 hp over a set of E7's and when ported even more HP. Yes you should be able to hit 12's or better, but not with a weak little converter or wimpy gear.