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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Stock Shift Point

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Old Aug 14, 2008 | 02:14 PM
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Default Stock Shift Point
Hey--the cam discussion had me wondering...where do you guys shift on a bone stock lt1 motor?
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Old Aug 15, 2008 | 07:39 AM
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a bone-stock LT1 makes peak HP around 5250rpm. try to shift around there. if you push it any longer, you'll just be losing momentum up top, because your TQ curve has already dropped significantly at that point.
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Old Aug 15, 2008 | 08:06 AM
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I was shifting mine about 5300-5400 actual RPM (probably 6K on the stock tach)
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Old Aug 15, 2008 | 08:08 AM
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Originally Posted by JoeliusZ28
I was shifting mine about 5300-5400 actual RPM (probably 6K on the stock tach)
so do you have gears or are LT1 tachs just innacurate? I was wondering the same thing and now i need to know if i should shift at 6k on the tach or 5300 on the tach.
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Old Aug 15, 2008 | 08:35 AM
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stock tachs are innaccurate. Idling the stock tach reads 200 RPM higher and the inaccuracy seems to vary depending on what you are doing. (it always reads too high though) I have an autometer digital readout/shiftlight combo on my a-pillar and it almost never agrees with the dashboard.
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Old Aug 15, 2008 | 09:00 AM
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Both my T/A and my Z are about 200-300 high. I have the Z set to shift at 5500, but you have some momentum beyond so it actually revs to about 5700 or 5800 at every shift. The tach says 6000 is before it shifts
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Old Aug 15, 2008 | 10:55 AM
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I shifted mine at 6k when it was near stock, but on the dyno when we pulled to 6k it only read like 5700
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Old Aug 15, 2008 | 11:09 AM
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Shift at 5800 RPM for best performance. The LT1 cam makes no power above that due to smal duration, small lift and restrictive heads. The guys that raise the rev limiter to 6K+ and swear its faster on stock cam/heads are completely delusional.

Think I am wrong, put it on the dyno.
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Old Aug 15, 2008 | 12:26 PM
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Originally Posted by wrd1972
Shift at 5800 RPM for best performance. The LT1 cam makes no power above that due to smal duration, small lift and restrictive heads. The guys that raise the rev limiter to 6K+ and swear its faster on stock cam/heads are completely delusional.

Think I am wrong, put it on the dyno.
stock rev limiter is 6200 but i absolutely agree. My car ran slower when i shifted it at 5600.
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Old Aug 15, 2008 | 01:00 PM
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Yeah I remember it going to 5800 or so, but never going above 6k stock.
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