Maybe it is the design of our intake, but my car really dies in second gear after it reaches 4500. First is fine, I guess b/c of how it is geared, but it seems like it takes forever to go that last 500 rpms in second. I am guessing I am losing about 1-2 tenths in the quarter b/c of this. I wish I could get my car to just shift at 4500 at full throttle. Any ideas? Do you have to mess with the governers inside the transmission to change shift points? Should I just buy some aftermarket intake to help out in higher rpms? When are your transmssions shifting out of second?

Thanks.

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1990 Formula 350
Hooker Headers, Random Technology Exhaust, K&N, Airfoil, MSD 6A Ignition, Aftermarket chip, 3.42 Gears, Metco LCA's w/ brackets, F Body Perf. Panhard Rod and Strut Tower Brace, KYB AGX shocks in the rear, 1999 Formula Wheels, White Face Guage Overlays

 

You're faced with 2 problems: the computer is programmed to run really rich at WOT (which kills power), and your cam, heads, and intake aren't optimized to make much power above 4500 rpm. I know that with good heads and a decent cam, aftermarket long-tube runners will extend the powerband out to 6000 rpm, although it'll still peak around 4800 rpm. You have to mess with the governor to change the shift points, but (Glenn mode on) I'd get into PROM-burning first and lean out the Power Enrichment tables. It's a lot cleaner than futzing with the tranny, and you can change a ton of things that you never knew existed in the computer (Glenn mode off).

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Greg Westphal
'87 IROC 355TPI/A4

 

Greg has a point.. but you do have a problem... actually, same problem I do... and it is repairable, because my car fixed itself for 2 passes and I got a decent time with now internal engine mods. True the intake isn't designed to flow in the high RPM band... but the engine shouldn't just roll over and die at 4500RPM... I am trying to figure out the problem... like I said on another post, I will post the solution up when I figure it out.

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1988 Pontiac Trans Am GTA L98 5.7L, Black on Black with 113,000kms

 

Yeah, let me know if you figure it out. That is what I was thinking, too. Maybe, our intake sucks at high rpms, but it should at least pull to the next gear fairly quickly, and not just die. Any other ideas?

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1990 Formula 350
Hooker Headers, Random Technology Exhaust, K&N, Airfoil, MSD 6A Ignition, Aftermarket chip, 3.42 Gears, Metco LCA's w/ brackets, F Body Perf. Panhard Rod and Strut Tower Brace, KYB AGX shocks in the rear, 1999 Formula Wheels, White Face Guage Overlays