Well I started out being surprised when I clicked off a 13.91@100.26. Then I was plesantly surprised agine with a 13.83@100.33. The two weeks ago I blow through the traps at 13.70@100.93 and last week I and many other LT-1 and LS-1 owners are astonished with a whole night of 13.60's passes. I have managed a best time of 13.61@102.88 and I was still having a traction problem. Myself and many others think it can go low 13.50's or high 40's on drag radials. I have confused myself and thourghly pissed of one supercharges 1995 5.0 mustang owner. I swear this car is totaly original down to the 55,000 mile goodyear GS-C tires. It has stock exaust and filters, the only thing I did to it at the track is pull of the air box lower the tire pressure and through a bag of ice on the intake plenem. If anyone knows what is so different about these B4C's to make them run almost a second quicker in the quarter over Z-28's and Trans Am's please reply and let me know anything you know about these cars. Thanks
Jeremy(Sleeper-Z)

I think there is more than a strong possibility that your engine has been modified and you are not aware of it. Even if for some reason your engine was PERFECTLY blueprinted from the factory, the most you might see at the track would be a .2 to .4 difference but certainly not a full second. Is there any way to talk to the original owner (assuming you're not)???

My bet would be that the cam is different, fuel delivery has been tweaked and the rear end ratio helps alot. Compression may have been altered as well. This COULD make a second difference.

I would go get the car dynoed. That will tell you alot.

[This message has been edited by sr71bb (edited 09-19-2001).]

isn't the b4c the police package? i know they do change some things for them, like cam and chips ect, this could be why!

The engines are the same. And they are not as light as the 1LE's. I remember seeing a test of a 350 1LE car from 1991 or 1992 and it ran high 13's bone stock.

I owned a '89 IROC with the 305/5-speed and the G92 package that gave it dual cats and close to the 350 cam. Rated at 230hp stock. I opened up the intake box and put on a cat-back plus did a few little things like upping FP a couple psi, removing screens from the MAF and such. Still what I'd consider stock except for the exhaust. That car ran 14.8's at 94mph with horrible traction problems. It made 220rwhp.

My guess would be some little things have been done to increase airflow and that can have a dramatic effect on those TPI engines.

Scott

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'68 Camaro, 383, AT
'91 Corvette, L98, 6-spd