Stock 4.9 1/4 mile times? (Page 1/29)
hoola47 JUL 26, 01:17 AM
All the times (1/4 mile thread) are modded, or modded heavily, 12.51 for Master tuner and PBJ"s her 86gt turbo etc.

Rockcrawl: 13.3 modded
Fieroking: 13.90@96mph (mod. 4.9 Caddy)

I was wondering what does a stock 4.9 with an auto or stick run in a fiero, ( at the most with a rockcrawl chip)?
I'd be more interested in this install if I had an idea on performance times.

jstricker JUL 26, 01:35 AM
The first (and only) time we ran the Finale with the 4.9 we ran a 14.81@ ~100 mph. BUT, we have a problem. When Rockcrawl did the chip, the code on our transmission was unreadable and he used the most common gear ratio in a '93 Deville, a 2.73 (or thereabouts) to program the chip. When we ran it on the strip, we would hit the rev limiter and the car would not shift unless Chris got out of the throttle first, then he could go again. We've since had the car on the dyno and from that were able to calculate the true final drive ratio is a 2.97. Rockcrawl is even now reprogramming us a new chip. The dyno showed our engine to be making good HP and we should be in the high 13's. I'm HOPING for a 13.89, but I'll be satisfied with anything under 14.

I've driven a lot of quick cars in my years and this car certainly feels like an honest 13 second car to me if we don't have to get out of the throttle two times every pass down the strip.

John Stricker

PS: Forgot to say this has the 4T60E transmission and is bone stock except for an MSD 6A and is in excellent tune.

[This message has been edited by jstricker (edited 07-26-2004).]

hoola47 JUL 26, 12:09 PM
Thanks for the response, anyone else ever take there stock 4.9 to the track without any problems?

[This message has been edited by hoola47 (edited 07-26-2004).]

linenoise JUL 26, 12:10 PM

quote
Originally posted by hoola47:

Thanks for the response, anyone else ever take there stock 4.9 to the track with any problems?


Not yet, trying to go for the 1st time this saturday, worst case my 1st run will be on the 14th at St. Thomas

4.9 PFI FIERO JUL 26, 12:14 PM
I need to know this information too before I do this swap. I dont wanna put a motor in my car if i'm gonna be running 14's I want at least a 13.x 1/4 mile. It just sounds better to say 13 rather than 14 know what i mean.

[This message has been edited by 4.9 PFI FIERO (edited 07-26-2004).]

Black-Azz-GT JUL 26, 12:22 PM

quote
Originally posted by linenoise:


Not yet, trying to go for the 1st time this saturday, worst case my 1st run will be on the 14th at St. Thomas


Got any pics of your new install?

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-Chris - Custom Gun Metal 86 GT 3.4 5spd
3.4 SOLD & 4.9 being installed

"It's too low, too rough, too loud, drinks gas, it's totally impractical, but damn good lookin. In other words, It's almost perfect!"
Build up tread or MODS w/ Pics

linenoise JUL 26, 01:49 PM

quote
Originally posted by Black-Azz-GT:


Got any pics of your new install?


Weathers good, Camera is charged. I'll take some pictures and post them tonight.
4.9 PFI FIERO AUG 28, 02:39 PM
bring back to life (bump)
The Punisher AUG 28, 04:02 PM
all 3 stock 4.9's that have posted times here have been high 14's to low 15's at 90ish mph with the auto tranny

So with those 3 stockers its safe to assume that your 4.9 swap with an auto tranny as well will turn a high 14. Sad but true

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JM / SH


I gotta have more cowbell!!!

crzyone AUG 28, 04:44 PM
I thought Rockcrawl, before he modded his 4.9, was in the high 13s? I've always thought the 4.9 was a mid to high 13 second car. The torque down low makes it a real good 1/8th mile car, do they seem to run out of breath at the end of the 1/4?

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