I've got a quick question. Please take a look at my sig and tell me at what r.p.m. I should shift at. I've been shifting at 5300 and I feel like I'm shortchanging myself. How much r.p.m. is safe with my fresh motor w/o breakage
'85 GT h/c/i still slow w/ 13.30's
'85 Broncho ride
'85 Yota wannabe rock crawler
Ever get that itchy "I didn't wipe so great feeling"?
At the track, try shifting around 5700-5800 RPM and see if your ET perks up. You should be able to launch pretty hard providing you can warm up those Hoosiers. I launch at ~5000 RPM with ET Streets and get a 1.75 60ft.
Make sure to follow the proper break-in procedure for your new engine before all this.
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i have a 1992 automatic convert. with a shift kit, and i shift it at about 5800 or so, but my car is slow
Red 1992 Mustang LX Vert. 5.0
Cobra R's, Sln wing, 2.5 cowl hood,
MAC CAI, MAC shorties headers, Mac h-pipe, mac cat-back, underdrive pulleys, AOD with shift kit, gears, electric fan 130 amp alternator.
Try increasing shift points from 5400 up, by increments of 200 RPM. ET is a function of hooking up, MPH is a function of power. Increase your shift points until MPH starts to decrease. Then, drop back to the previous shift point that gave you the best MPH.
Do you have an aftermarket tachometer? The stock tach is hardly accurate. My buddies stock tach reads 7000 RPM's when the autogage reads 6000 RPM's. Just food for thought.....James