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					Originally Posted by old5.0  That's my understanding as well.  A roller cam 5 speed Fox coupe with those mods could crack 12s with a very good driver before the factory Goodyears become an insurmountable obstacle, so I'm curious as to why a TPI Camaro can't at least get in the bottom half of the 13s. | 
	
 Here's a Motorweek road test of an '89 G92, dual cat, LB9,  5 speed with a 3.45 gear.
This is the fastest one I've ever remember seeing from the day and may not be representative of the typical production car - but they got a 13.9 second 1/4 mile.
https://youtu.be/aCL-odNmuGA
There were a number of free/cheap mods on the TPI back in the day, (similar to the 5.0 Mustang), which could REALLY wake it up.