jus4fun

The car/87 hatchback was 4 cyl. Now- 1979 302 +.030 Trw #2488 pistons, Pro mustang 7 qt pan, melling hv pump, comp cam magnum. 292/560 solid comp cams roller rockers 1.6, patriot aluminumheads 2.02.1.60 64 cc, 184 runners, victor jr intake, 750 holly, msd 6al w/ 2 stage, msd blaster 3 and dist. hooker super comp headers w/flowmasters. C4 with a brake and 9 inch converter,leaves at 4000 on the rev limiter.8.8 with 4:30 gears and 28x9x15 M/T slicks. Shift at 6500 not useing the juice 13.08 at 104 36 degrees total time at 2000. Why am I so slow?????? any help out there?

jus4fun

No info from anyone? I'm giving up It'll sit covered up in the garage until my daughter can drive her, if she is interested/

Dirty Sanchez

Got any vids or timeslips??

jus4fun

60 2.48 1.96 1.81
330 6.029 5.4295.339
1/88.95 8.64 8.363
mph 83.68 83.57 83.09
1000 11.510.89 10.92
1/4 13.66 13.05 13.08
mph 104.48 104.87 104.78

These are my three runs 58 degrees humidity 63 bar 17.5. First time at the track did'nt heat the tires enough in the first run

5.0stanger

Have you had it tuned or run on the dyno? How do your plugs look? Are you sure you don't have a brake hanging up?

What have you done to try and fix it? Anything make improvements?

jus4fun

These runs were friday night all I've done is pulled it off the trailer and put it in the garage. I'll pull a plug today. No dyno or tune yet. I'll go thru the carb this week along with double checking timing and valves.I GUESS THAT IS THE PLACE TO START?

GT350

I would start with pulling the plugs, my 347 was not running as I thought it should, then I found I was fouling plugs in about 10 min. Found that by changing to a 50,000 v. coil and useing AC irridium plugs, the longest I could find fixed it right up!Use the same heat range, but the longest length you can find, the problem with most alum. heads is it takes a longer plug to get near the optimun position in the cylinder.It has never fouled another plug and performs like it should. My point is see what the plugs look like, they will tell you whats going on inside. Second, borrow another carb and see how that one performs, might have a prob with the one you have and not know it. You should easily be running below 12.5, next look at the tranny, if you see good revs. but the car isn't keeping up I would say a worn out converter or in need of a rebuild. Sounds to me like it revs good but losing all that power before it gets to the wheels.

OneFine89Mustang

you might need a tune

FuzzyDiceRule

new suspention might help too, done anything to it, or is it stock?

jus4fun

Changed both lower and upper control arms to bbk. Anyone suggest a plug to start with. Pulled them out and they are a flat black all over 3924 autolites right now Trans is brand new. i got a new converter but it didn't seem to leave hard enough with it. I put the old one back in its possible the conveter is messed up. My old trans had burnned the clutch bands up. I'll change plugs go thru the carb and put the new converter back in. Is that to much to do at once?