Damn Car is Sandbagging on me!

Jul 26, 2003 4 Replies

My "new" 89 5.0 is setup as such... (Unfortunately, I don't know the exact specs on the engine since it was a Repo from the place I got it.) The dealer only knew it had...


- 93 Cobra Long block



- ??? Aftermarket cam



It also has....


- 2.5" Off Road H-pipe, OEM Mufflers



- OEM HO Intake, TB, MAF, Air Box



- 2.73 Locker



- T5



Kinda hard to describe, but during WOT runs, it pulls like a Mule from 2-6K RPM. It really "FEELS" like it's still holding back on power. Like it's on the edge of letting out somemore Power. Kinda like it's constipated or something! ;>)



Where do I need to dig next to unleash this thing ??



I should mention here that this is my Primary driver that I commute 60 miles/day in. I probably average about 90+% Highway driving.



The first tank of gas I got 23.6 MPG! (driving halfway sane) Kinda like to keep it up there if possible.... :>) .


ERIC


89 5.0 LX Vert
64 Falcon HT Hot Rod Project FOR SALE

Check out the Ford Engine Heaven!

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a 93 cobra long block should have gt40 heads. the stock intake,exhaust & gear are holding it back. replace the upper & lower intake with a cobra,gt40 or aftermarket intake, next install some aftermarket headers & free flowing mufflers, than install at least a 3.55 gear

Marauder,

It can't be the same problem because mine didn't pull like a mule, it ran like a pig. Totally gutless. Turned out to be the coil AND a bad mass-air sensor, and possibly the computer.

Is it in fact a Cobra long block or did the dealer just say it was? Because you know dealers... they'll tell you anything, and most of the time they don't even know what they're telling you.

If it is GT-40 motor, the regular 5-oh intake can't be helping the GT-40 heads, and neither would the 2.73 gears. Maybe that's your problem. Patrick '93 Cobra '83 LTD

Well, I'm getting 40 Series installed in just a few hours. We'll see what happens from there.

I'm pondering going with a TMoss Ported Lower intake as the next step. Anyone have one on their 5.0 ??

I really can't say 100%. This is the 4th car I've bought from this particular dealer, and he's always been straight up with me in the past.

I know for sure that it's NOT stock. I've driven a few 5.0s in the past, and this one is a FREAK!!

I don't know really how to gauge the power. I know it's a REAL subjective determination going by SOTP. I haven't had time yet to get times on it from the track yet either.

All I know is that (for a car that has 2.73 gears) to be able to "Light Em Up" at 20MPH (in 1st gear) is something else!

What do you think it may have based on that ??

ERIC

89 5.0 LX Vert 64 Falcon HT Hot Rod Project

Check out the Ford Engine Heaven!

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