Dyno tuning tips? [Archive] - Chevelle Tech

: Dyno tuning tips?


ullose2
Aug 18th, 06, 1:42 AM
I know this is a little long but here goes....

I was considering dyno tuning my motor as I have never been to the track, and I dont feel that Im experienced enough to do it by the seat of my pants. I was wondering if I posted the specs of the car if you guys could give me a few pointers as far as tuning goes. I dont have much experience tuning,and this is my first car. The car seems to be running really rich so I will try jetting, and I was also going to try changing the spring combo in the dist. for a little more timing. Is there anything else you guys could recomend to make the most of the dyno time. Is 275 for 2 hours a good rate for a chassis dyno? Once again, thanks again you guys for saving my butt. Anyways, heres the combo.

Engine:
- .030 350 , Scat crank , Eagle rods , JE 10.1 pistons (when we checked the actual compression I think it was 9.85:1)

- Lunati Cam (hyd. lifters) .490/.490 int./exh. lift , 292/297 int./exh. dur. 112 deg. lobe separation

- Holley 20 deg. alum heads 2.02/1.60 int./exh.

-Harlan Sharpe 1.5 roller rocker

-Holley dual plane intake

-Holley 750 double pumper, mechanical feul pump w/ holley regulator pressure is set at 6 psi.

-Flowtech tri-y headers 1 5/8 in. primaries, Flowmaster 40 series mufflers, 2.5 in exhaust

-Ignition MSD Pro-Billet dist. mech advance MSD 6A box Blaster 2 coil 8.5mm super conductor wires

-trans th350 , 2400 rpm stall , Moser 12 bolt 3.42 gear, tru-trac diff.

These are all the specs of the car i could remember off the top of my head. If you need to know anything else I will find out and post. Thanks again
Heath

Scotch
Aug 18th, 06, 11:17 AM
You cannot beat dyno tuning - especially on a fresh combination. The price you quoted is very fair - in fact it's less than most. If you can get your carb and timing totally dialed in (which should be no problem in 2 hrs.), you're ahead of the game. Knowing your fresh engine is running at it's best is great insurance, and you'll have a solid baseline to work from. Should you choose to alter the tune, you'll always have a 'safe' set of jetting numbers and timing figures to go back to that you know will work very well. Knowing where your car makes peak power, and how much power that actually is, is also valuable when deciding on shift points and launch rpm.

All points considered, I'd hope you're planning a date with the dyno...