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Would roller 1.7 rockers make a noticeable gain over stock rockers with my current setup? I'm not asking about worth as everybody has a different view on worth, just will i see and feel a gain in hp/torque.
Ok here is the planned setup: Stock 91 HO lower end and stock cam, GT40P heads with upgraded springs, GT40P intake, 65mm TB, 70mm MAF with 24# tube, 24# injectors, 190 lph fuel pump, CAI, BBK longtubes with offroad h pipe, no smog pump. The car is also running 3:73 gears and a slushbox.
Also if anything is off about this set up let me know. Thanks
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I noticed a difference when I did mine a few years back. I upgraded the car one part at a time, including the 1.7 Crane Cobra roller rockers, and they made a noticeable difference in both power (positive) and gas mileage (negative). At the time I still had the stock heads, intake and cam in the car, but with aftermarket exhaust.
89 Coupe, 369 big bore, AFR, custom Comp cam, Kooks, 3" exhaust, 11.6 @ 121 mph
04 Cobra, JLT 12" CAI, Magnaflow, Borla, Stifflers, FTBR Rr Susp, MM Frt Susp, 12.4 @ 115 mph
67 Cougar, XR7 GT, 462 FE, 4 spd, Edelbrock heads, PI intake, Global West
They're good for a few extra ponies and a little more loopy idel, but downside is your valve train will wear out 25-50% faster. Most people have to rebuild the valve train around 75,000 miles due to the added wear. Basically as they wear the valves begin to float reducing power.
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