criticalx

cam only( lt1 stock heads, 10.7 cr, le 228/236 cam, 1.6 rr, long tubes, ory, bullet muffler).. dyno numbers.. 355whp and 373wtq what u think good or bad??

bowtienut

iTrader: (1)

SAE #'s? Honest dyno?
M6..........good
A4..........very good

JCSWS6

iTrader: (5)

That's healthy! Gotta be an m6

HCI2000SS

iTrader: (2)

Doesn't matter as long as it runs good

criticalx

auto with revmax 3600 stall.
just number i seen on dyno 4th run.. had to make few pull bc of going a obd1 pcm from obd2.. but once tuned right it probably had over 360 in it but motor was hot and 90+ deg out.. da was like 2780 out..

criticalx

shift points off run 7.63@89.39mph 1.66 60' da 2400 car weight 3325
1st shift 5900
2nd shift 5600
max power was 6100 to 6200.
got have shifts fine tuned

criticalx

what would be best shift point?

nitrous2fast

iTrader: (2)

1st Gear should be held out a little bit longer than the others to keep your rpms from dropping too far out of your torque band because of the wide gear ratio between 1st and second. It would depend on how far the rod bolts will hold the motor to without stretching. The power band really would determine the optimum shift point. A graph would be helpful.

bowtienut

iTrader: (1)

^this^
With a power peak of 6150, it would want a 1-2 shift about 6700 and a 2-3 about 6600 for best ET's. So adjust accordingly depending on how lucky you feel about your rod bolts and the condition of your rod bearings.

Puck

iTrader: (17)

You are leaving some time on the table with 5900 shift points. I shifted at 6300 with a similar cam peaking at 6100 since that was as far as I was willing to take the tired old short block in the Z.

A good rule of thumb is to start around 500rpm after peak and adjust up or down from there.

criticalx

Old obd2 computer was 6450 roughly but it hit 6500 rev limiter before it shift at track. Then shift.. turner said it pulled to 6200 and fell off hard..

JCSWS6

iTrader: (5)

I have the same cam and shift at 6300. Would have gone a bit higher but I needed to keep the stock bottom end alive for a bit. I had a revmax 3400 stall with the same set up before swapping to M6.

How was the power down low?

mcalus

iTrader: (14)

I have a cam only 226/232 stock heads.

put down 347rwhp 367rwtq

criticalx

It's stock rebuilt bottom end.. wasn't meant to go this far.. not sure how to post graph. But only one I have was of base tune tune.. had computer crap out so I had to get another. So i was worried rest of tune.

HellTeeOne

Good numbers. Were the heads shaved before you put them back on? What thickness head gasket you running?

criticalx

they was shaved 0.020 and .039 head gasket..



motor has been redone... old tune was to 6450 shift points she lived on ton those.. i got cats and cables to tune shifts.. got them at 6350 both now.. i know stock rob bolts dont like or over 6300.. but what normal happen over that turned bearings or blown motor?