Dendyc

Hey--the cam discussion had me wondering...where do you guys shift on a bone stock lt1 motor?

sdm1234

iTrader: (8)

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.

JoeliusZ28

iTrader: (2)

I was shifting mine about 5300-5400 actual RPM (probably 6K on the stock tach)

MTBSully

iTrader: (7)

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.

JoeliusZ28

iTrader: (2)

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.

sweet-94z28

iTrader: (30)

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

ClovisAutoMotion

iTrader: (3)

I shifted mine at 6k when it was near stock, but on the dyno when we pulled to 6k it only read like 5700

wrd1972

iTrader: (12)

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.

JoeliusZ28

iTrader: (2)

stock rev limiter is 6200 but i absolutely agree. My car ran slower when i shifted it at 5600.

Fixxer99TA

iTrader: (5)

Yeah I remember it going to 5800 or so, but never going above 6k stock.