TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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8.66@77. Best 60ft is 1.896.
That was with the vac line falling off meaning that I only had nitrous in 1st gear, not 2nd!
__________________ '91 GTA - 400sbc,AFR195elim,280 xfi cam,1 5/8 shorty headers and single 4", LT1 intake, 3200 stall, 3.75 gears with a ford 9" and Zex dry nitrous.
I ran a 9.32 at 72.36 mph. My car is pretty stock 89 GTA. All I have is an airfoil, AC delete, AFPR set at 48 psi, no cats, flowmaster cat back, 2.77 gears. I still have the stock manifolds. I just put a 2500 stall and I am getting ready to put hooker super comp shorties on it. I am hoping to break into the 8's with this setup. I am currently building a new motor that I am hoping to put me in the 12's in the 1/4.
Stock manifolds, I have a high flow y-pipe where my cats used to be and 3" flowmaster catback. But yes, 9.32 with some minor bolt ons. I was impressed.
i used to run stock locatation LCA's and 2.77 gears on stock L98 with exhaust work. ran 8.808 at 77.xx mph on a 1.895 60'
now with LCA relocation bracket, 3.27's and no other changes, i have only been able to do a 8.87 at 76.xx mph and 1.88 60 foot so i dont know why i am so slow now
I think it may be that you are going thrue the rpm's to fast and not letting the car pull as hard. You may be staying in the higher rpms to long also. But that is just my opinion. I could be on the other side of the moon with this one.
Originally posted by Orr89RocZ i used to run stock locatation LCA's and 2.77 gears on stock L98 with exhaust work. ran 8.808 at 77.xx mph on a 1.895 60'
now with LCA relocation bracket, 3.27's and no other changes, i have only been able to do a 8.87 at 76.xx mph and 1.88 60 foot so i dont know why i am so slow now
Slap some DR or slicks on it and see what those bigger gears will do.
I'm still running the TPI although it has been upgraded. Edelbrock manifold, modified SLP runners and modified factory plenum. I feel the TPI helps me on the launch and getting the good 1/8 mile times. The Yank SS3600 torque converter also plays a big role.
__________________ Best of 11.57 and 115.73 mph(1811DA). Motor: Dart SHP block 368ci, AFR Comp 195cc heads, 11.1:1 comp, highly modified TPI 1st style SLP runners, moded GM plenum and First Injection TPI intake manifold, Mike Jones 3/4 race cam, Yank PT4000 converter, Dyno Don 1 3/4" shorty headers, Dyno Don custom exhaust, custom cold air intake, AS&M monoblade throttle body. Meziere electric water pump. Mufflex 3.5" exhaust catback. Magnaflow 3.5" muffler#12909. Kevin91Z Tune. 4L60E installed. Now 420RWHP, 417RWTQ with new motor.
Thanks. I was planning on running basically what you have except the base. I want a scoggin-dickey vortec base with vortec head. If not that then a mini ram if I can save enough money.
