This is for my car with current mods, their in the sig.
The 2 cams I'm looking at are the production Lt4 cam w 1.6 roller rockers and the crane 2031 cam. Im wanting close to the same gas mileage I get now with the most horsepower and torque from whatever cam, the car is a daily driver also. Thanks For your help.Here are the specs

the Crane 2031 cam

Brand: Crane Cams
Product Line: Crane CompuCam Camshafts
Part Type: Camshafts
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,500-5,000
Intake Duration at 050 inch Lift: 208
Exhaust Duration at 050 inch Lift: 214
Duration at 050 inch Lift: 208 int./214 exh.
Advertised Intake Duration: 264
Advertised Exhaust Duration: 270
Advertised Duration: 264 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.438 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.452 in.
Valve Lift with Factory Rocker Arm Ratio: 0.438 int./0.452 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Computer Controlled Compatible: Yes
Grind Number: 2031
CARB EO Number: D-225-22
Quantity: Sold individually.

The production Lt4
96 LT4 203/210 @ 0.050" .475"/.479" LSA 115
lift is w 1.6 roller rockers
Thanks

 

The LT4 cam will probably work better with the stock computer tuning.

The Crane will probably require more computer tuning.

The lift with 1.6 rockers on the LT4 cam is VERY close to the accepted limit of .480" for stock heads. Make sure you check your retainer to valve guide seal clearance. Or you can get a set of Manley 22409-16 springs and 23651-16 retainers and be good for .500" lift on stock heads. Also make sure you change the valve guide seals while you're changing springs so you dont get the puff of smoke on startup when the seals wear out.

 

lt4 cam hp/tq gain w tune for cam, should be how much?

 

Should be about 15-20 horsepower at the flywheel.