Trevor.j

iTrader: (10)

hey guys, i am in need of a desperate look at my tune! i have a 94z with some shifting issuses. now here is the problem. the car drives and idles great! its as soon as i go into WOT that the car does not shift. even if its in any gear or any mph, even if i manually do it, it still does not want to shift . i have to let off the gas and it will finally shift 3-5 secs later. i cant figure out why i keep hitting the rev limiter. if i mash the gas at 45mph, the car runs very strong intill it trys to shift. i have replaced the tps,vss, and added extra oil.(some ppl told me to check those things). i just want to make sure my shift points are on point, and check some other things. i dont really need a tune, just need to look at a few tables. I HAVE CASH IN HAND!! im located by the airport, and will meet up anywhere in orlando.

here is a list of the mods

Engine:
GMPP 218/228 .525"/.525" Cam
GMPP 1.6 Roller Rockers
GMPP LT4 Valve Springs
GMPP Lifter Set (Replaced at 78,7XX miles)
Hypertech 160* Thermostat

Exhaust:
Pacesetter Ceramic Coated Longtube Headers
3" Off Road Y-Pipe & Custom 3" Catback
3" QTP Cutout
Flowmaster 40 Series Muffler with Dumps

Drivetrain:
Pro-built Automatics Rebuilt 4L60E with cryoed reverse/input drum and HD sleeve
Transgo Vacuum Modulator & Transgo Stage II Shift Kit
PI Vigilante 3000 Stall
LS1 Aluminum Driveshaft with Lakewood Performance U-Joints
B & M Tranny Cooler
T/A Performance Rear End Girdle

Suspension:
Spohn Tubular Lower Control Arms
Spohn Lower Control Arm Relocation Brackets
Spohn Strut Tower Brace
Spohn Subframe Connectors

Ignition:
NGK TR5 Spark Plugs
MSD 8.5" Super Conductor Plug Wires
MSD Ignition Coil
LT4 Knock Module



any info would help alot.

thanks

-
Adam

86 IROC

iTrader: (14)

Are you positive it's in the tune? My LS1 car did that years ago when it had the stock trans and bolt ons. Ended up being cracked shift accumulator pitson. It was plastic from the factory. Installed an aluminum one from an older 700R4 and it remedied my problems.

396D1SS

iTrader: (21)

it should run decent with that cam on a stock tune. I agree with 86 iroc i would search else where first

396D1SS

iTrader: (21)

also do a search on " LT1 stall wall" it only happens to OBD1 cars with higher stalls. People usually convert it to obd2 to over come this problem

Trevor.j

iTrader: (10)

yea but usually with the stall wall its a high stall. i just want to look at the tunes shift tables just to cross one off on the check list. i am still diging and looking for more things it could be.