theformula

I'm currently getting a chip burnt by Ed Wright. Can anyone give me recommendations of what RPM I should be shifting at in WOT . You can see my mods in sig below.

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91 Formula
305 TPI 5speed
1LE/G92/WS6
Custom K&N cold air intake, SLP airfoil, ported & hi-polished plenum, March pulleys, TB coolant bypass, 180* stat, Crane AFPR (47psi),94 octane,Crane Extruded Alum. 1.6 full roller rockers, Timing set from 4*BTDC to 10*BTDC,MSD coil,MSD6AL, Holley 9mm Annihilator Laser shot 50 wires, Ac Delco cap,rotor and plugs, Bosch O2sensor, SLP 1 5/8 headers,SLP catback,3:73s,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.
Street legal with stock throttle body, runners,intake manifold,cam, and heads.

[This message has been edited by theformula (edited January 06, 2001).]

Kevin91Z

iTrader: (1)

Since you have the stock intake manifold, probably around 4600 or so. I am able to feel mine give up and stop pulling. You should shift just before that.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

theformula

I think you're right Kevin. Actually my peak hp is at 4600 if I'm not mistaken. How much more RPM would an aftermarket intake manifold give me?

MrJ

4600 is low as hell to shift. I've got an auto car, but I shift 1-2 at 5300, and 2-3 at 5100. 4600 = short shifting and will hurt ETs.

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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

Built on Wednesday

[This message has been edited by MrJ (edited January 06, 2001).]

JohnnyIroc

iTrader: (3)

I think shifting at 4700 rpms is the best shift point. I got my best timeslip shifting at that rpm range and you shouldnt shift before 4700 and no later than 5000 rpms especially with the 3.73 gears, which I have also. Good luck

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88 Iroc 305 TPI 5 speed
Performance Resource Chip, Flowmaster American Thunder cat back exhaust, B&M Ripper shifter, MSD coil, TB bypass, TPIS MAT relocation kit , TPIS 170* t-stat, Richmond 3.73 gears, March Power & Amp pullies Home made Ram Air
Best et: 14.338
Best mph: 96.97
Best 60': 2.106

http://hometown.aol.com/famioso15/johnnyiroc.html

Abe91Z28

MrJ my car shifts @5500 1-2, and 5100 2-3 i really wish it would shift around 5000 because i can feel the car losing power after the 5000 also, when you shift does the car shift for you, or when you take it in to 2 will it shift right away? On my car for example @ WOT i can move the shifter into 2 around 4800 and the car will AUTOMATICALY go to 5500. it really gets me mad. Does your car do that? When i'm not @WOT and i shift, it will go into gear right away. But, hey i guess thats why its called and automatic
-Abe

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1991 Z28 305 TPI.

Mods: Hypertech Airfoil, gutted airboxes, K&Ns,polished 91' rims (they turned pink!), and all rear end bushings & tranny mout are energy suspension poly ones now

MORE TO COME: Any suggestions on what to do next? I really want to try and make the 305 run 13s (i've mostly been doing basic repair to the car, but now most of its done i have money to mod!)e-mail me@ abraham_39@hotmail.com

[This message has been edited by Abe91Z28 (edited January 07, 2001).]

MrJ

I've got a Trans Go shiftkit. I can hold any gear as long as I want But the tranny shifts, automatically, at a little over 5000 for 1-2, and about that for 2-3 also.

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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

Built on Wednesday

87Z-ya

iTrader: (1)

Loosen up the tv cable and it will shift sooner. It will probably shift to soon in normal driving though.