ZL-1, what Hp do you think it will make

[EZ Nova]

So HOPING to make it to the dyno tomorrow with the 1969 "052" ZL-1, here are some specs:

- 1969 052 block, 100 over
- Eagle 4.00 stroke so 475 inches
- Eagle +.250 rods
- Je pistons
- .904 Comp roller lifters
- .715 .258 on .114 Comp cam
- trends pushrods
- 1969 074 heads ported with 2.25/1.94 valves
- Comp 1.7 roller rockers
- 1969 198 dual plane intake ported
- reworked Holley 830

So what's your guesses?????

[cook_dw]

Engine dyno Im assuming? What octane race fuel? What type of ignition?

Without knowing much about the actual build I would say that depending on how much head work that the heads would be the limiting factor aside from the carb.

This is all purely a guess on my part.

My guess is 709hp 684tq and I might be on the high side.. idk

[EZ Nova]

Pretty good amount of work on heads and intake. Will be aggressive pump gas/C12.

For dyno, just using my MSD dist and dyno has dig. 7

[VintageMusclecar]

Is this the same dyno that showed 730 lb.ft on that 468 you posted about back in February?

[EZ Nova]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: VintageMusclecar</div><div class="ubbcode-body">Is this the same dyno that showed 730 lb.ft on that 468 you posted about back in February? </div></div>

NO not the same dyno.

[EZ Nova]

Getting close!!!

[VintageMusclecar]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EZ Nova</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: VintageMusclecar</div><div class="ubbcode-body">Is this the same dyno that showed 730 lb.ft on that 468 you posted about back in February? </div></div>

NO not the same dyno. </div></div>

WAG--800 HP.

Good luck! [img]<<GRAEMLIN_URL>>/beers.gif[/img]

[earntaz]

Is it going in a flat bottom?? -- looks like the carb is back-asswards ... [img]<<GRAEMLIN_URL>>/dunno.gif[/img] OR is that how the dyno needs to be setup ... TAZ

[EZ Nova]

Ok ran into some issues, some were ours, but mostly dyno. Fluctuating Hp numbers (by like 120+Hp between pulls), no changes just power dropped for some odd reason on a pull, and power going up and down significantly DURING a run. Other data seem to stay consistent like vac. both fuel consumptions, CFM and vol. efficiency.

We were thinking there is a issue with the water brake. All data has the indications of high 700's, low 800's (like his other dyno sheets with there info) just the actual numbers the dyno spit out were far less.

FYI we ran out of carb about 6600, Holley Hp1000 with 94's jets, and VE was constantly between 117 and 109. CFM is 359 THRU this dual plane intake! That was about 22 more then the 468 does the same style dual plane. And it made 713Tq and 709Hp

[EZ Nova]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: earntaz</div><div class="ubbcode-body">Is it going in a flat bottom?? -- looks like the carb is back-asswards ... [img]<<GRAEMLIN_URL>>/dunno.gif[/img] OR is that how the dyno needs to be setup ... TAZ </div></div>

It was just set on there for moving to the dyno. We ended up using the shops Hp1000. Tried the 830 and ran out of carb real early.