Hello everyone, it is sooooooooooooo good to be home! Anyhow, Ok . I just got my hands on a 91 TPI Formula with the m5, it is equipped with the n10 dual cats, but there is no code for the g92 option. Sooooooooooooooooooooo my question is: What would be the factory Hp rating 205 or 230? Plus what would the rear gears be 3.23, 3.08, 2.73? I've been hearing too many different things from too many folks. I used to have an 84 T/A L69 m5 that I think would blow this one away. But I am curious. Thanx in advance for your replies.

 

Should be 230 0r 245 hp rated (if it is the 350)...gears.. no idea.

See if this helps at all


1991 Pontiac Formula, Trans Am M5 LB9 V8 9.3:1 5.0 (305) 230@4200 300@3200 TPI ---- 3.42 ---- ----