lest say that i am at the track, and i cross the line with a trap speed of 95 mph, and i am still in 3rd gear. if that is at or near my redline, and i am still in 3rd, will the tranny shift into 4th gear at WOT? or will it just redline and stay in 3rd and let the rev limited kick in?

the reason i ask this is becuase i am redoing my rear end, and if i went with 3.42s, i wont run out of (3rd) gear until about 105 mph, but with 3.73s, i will run out of gear at about 95mph. if i was ever to have a trap speed above 95, then would it shift into 4th? i am kinda coinfused on this.

do i even want the car to sift into 4th when running the 1/4?

thanks a alot.
-brian

------------------
1991 Camaro RS
----------------------------------------------
Ultra Blue Metallic, T-Tops

GM 350 HO Crate Engine - Vortec Heads, Edelbrock Performer Vortec Intake, Holley 670 CFM Throttle Body, Open Air Cleaner w/14"x3" K&N, SLP 1 3/4" Stainless Headers, Edelbrock Victor Series Water Pump, Accell Superstock Wires, Cap, and Rotor, MSD Blaster Coil, Hypertech Fan Switch & Thermomaster Chip, AC Delco Rapidfires, 3" Cat Back, Flowmaster 40 Series Muffler

700R4 - 2,400 Stall Converter, Vette Servo, Shift Kit, B&M Super Cooler

Brian's 1991 RS

Central NY F-Body Association

z28boy@twcny.rr.com IM name: Z28 Boy

[This message has been edited by Z28 Boy (edited November 02, 2000).]

[This message has been edited by Z28 Boy (edited November 02, 2000).]

 

SLP along with a few others sell a kit that will let your car shift into 4th at WOT. Check Jeg's or Summit.

------------------
1991 Trans Am GTA, Accel 300+ ignition, underdrive pulleys, AFPR, Accel SuperRam (ported out), Edelbrock lower intake (ported out), BBK 58mm TB, TFS 23* heads, SLP 1 3/4 headers, SLP 3" cat back (no cat), CompCam .495/.502 lift, Kenny Bell strut tower brace, lower frame brace, Jeg's SFC, Lakewood trailing arms and panhard rod

Pony's can run, but bird can fly

1987 Buick Turbo-T
1977 Chevy Blazer 4X4

 

I have the B and M piece from summit that is supposed to enable a full throttle 4th upshift, however, I was doing 130 in overdrive at 3/4 throttle and when I dipped into the secondaries I almost blew the motor when the car downshifted. Needless to say I wasnt impressed. you DONT want OD at the track! stick with the 3.42 gear, your converter should make it feel like a 3.73
------------------
91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 280 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104

[This message has been edited by vortecfcar (edited November 02, 2000).]

 

well there is only one way to find out hammer it on the highway and see if it shifts mine does. and if you want it to shift into 4th at WOT then buy the gm part that does it my tranny is original and it upshifts into 4th at full throttle then agian it had a vette servo in it stock too. you should wind out 3rd pretty quick so it is not that big of a deal. 120 mph is not really that fast on the highway. now in town 120 is too fast. just be safe and be careful there are no cops arround.

------------------
90 iroc l98
last season best corected 13.62 @102
mods
full exhaust, AFPR, pulley, jet stage 1 chip, billet servo, 52mm throttle body and a few other little things.

 

I just read a post on the FAQ and this guy said that if your tranny won't shift into 4th gear at WOT to buy the GM upshift kit #8673948.

-Auggie-