Dyno results

background;
[url]http://www.jeepstrokers.com/forum/viewtopic.php?f=8&t=1364[/url]

basics-
89 4.0 block
91 7120 head
various work done to both.
4.2 rods
hyper pistons
1981 crank
84 carb intake
91 HO OEM headers
2150 holly carb 1.13 version? forget. with 48? 51? jets
rebuilt OEM 1981 727 3spd auto trans-slipomatic
208 part time transfer case
3.31 gears
31-10.5-15 street tires
curb weight at 4,000#

fully warmed up(75 minute drive @>60mph in the CA summer
3 runs within 15 minutes of each other
I'm just gonna average the 3 stats till i scan the sheet
103' outside temp
29.84 baro
8% humid
6pm July 17 2014

first 2 runs at 153hp, 203 tq
third run 150hp 200tq

AF was averaging right around 12.hi(89-99) above 2400
wish i had numbers below 2400
fuel fattened up the higher RPM.
just looking at it now-I bet my idle circuit is a little too lean.

tq started dropping off after about 4200 but was above 190 from 2750-up


pretty nice..

what this tells me is i have a little timing/spark issue, probably a cam timing issue or not aggressive enough cam and the trans is a real power robber.

I'm getting enough fuel(maybe not being burnt correctly) but i think EFI will help me too.

Vette motor out

Thanks to Amy I got some work done over weekend getting vette closer to gone/swapped into my panel. 

Goal is to strip vette

Junk it

Put engine and parts aside for panel

Pull truck into garage and change cam timing.  If that doesn't make enough more power then pull it back in and EFI with OEM 4.0 system. If still not enough than wait for a while and find another 4BT. 

In meantime use the 89 cummins for heavy tow rig. 

Never ending saga.