Bolt-on Autos: Chime in please

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Nov 27, 2008 | 10:21 AM

#21

SOM WS9

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From: Northern Kentucky

All stock internals with an Edge 3,400 stall and mine shifts at 6,100 RPM 1-2 and 2-3. Crosses the traps at 6,500 or so, definitely out of the power band so I need a bit more tire. Worked well enough for a 11.93 pass on a 1.53 60'.

Nov 27, 2008 | 10:26 AM

#22

GatorFan08

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From: Winter Haven, FL

My car is full bolt ons and it falls on its face after 5500. so I have it set to shift at 5700

Nov 27, 2008 | 10:55 AM

#23

richard head

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Internals Stock? No reason at all to change WOT shift points. Leave 'em the **** alone lest ye bend a pushrod.

Nov 27, 2008 | 12:45 PM

#24

JonCR96Z

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From: Asheboro, NC

Quote:

Originally Posted by GatorFan08

My car is full bolt ons and it falls on its face after 5500. so I have it set to shift at 5700

What kind of times are you running at the track?

Here's my dyno graph with only lid/catback before and after tuning.

While it might be making less power past 5500 it's definitely not falling on its face.

Nov 27, 2008 | 01:30 PM

#25

RevGTO

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From: Wichita KS / Rancho San Diego

Quote:

Originally Posted by JonCR96Z

While it might be making less power past 5500 it's definitely not falling on its face.

Right. And shifting too early - especially on 1-2 - puts you too low in the rpm range in the next gear ... unless your converter makes up the difference.

Nov 27, 2008 | 07:19 PM

#26

01ssreda4

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From: Turnin' Wrenches Infractions: 005

Quote:

Originally Posted by JonCR96Z

Factory shift points are 6000, you should try 6400-6600.

let me talk with my tuner to double check that. does a tr224 .564 114 make power past 6000?

Nov 28, 2008 | 12:53 AM

#27

JonCR96Z

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From: Asheboro, NC

Quote:

Originally Posted by RevGTO

Right. And shifting too early - especially on 1-2 - puts you too low in the rpm range in the next gear ... unless your converter makes up the difference.

Exactly. Losing 5hp after 5500 is better than losing 15 at below 4000. It's all about the average power, not the peak.

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