441 cid dyno results

[kcl98]

Dyno sheet from 441 cid automatic ZR1 today:

[LGAFF]

is that with a Hogans?

[LGAFF]

705-710 Crank?

[ZZZZZR1]

WOW...

Now that's a ZR-1!!!!!!!

Will we see it at BG this year??????



David

[kcl98]

Lee,

No - that was with the ported stock plenum and injector housings - currently on the car - exactly the way it was when it ran the 10.44 back in October. I surmise the dyno backs up the track performance. I'd think 580-585 would be possible with the Hogan from my prior experience, but I'd probably lose about 15 ft-lbs on the torque. I think that's a better match for a traditional 6-spd, but with my auto & the wide ratio gears, I think the tradeoff might be a push at the track. It probably would trap out a little higher with the Hogan, but I'm not sure the ET would change much.

I do expect to be at BG - knock on wood, nothing goes wrong!

Kevin

[LGAFF]

think it would be easy to imprive the low end with the Hogans by modifying it alittle

[kcl98]

Originally Posted by LGAFF

705-710 Crank?

Yes - could be anywhere between 650 and 710 depending on whether you believe that a given drive train costs you a fixed amount of horsepower, regardless of how much the motor makes, or if you believe the drive train is a percentage loss, where motors with more power lose more between the crank and the wheels. If you use 20% loss for an automatic - it comes out at 710 - which makes me very happy... Not sure if I believe it, but I'm not going to take the motor out and engine dyno it to burst my own bubble.

[sammy]

if i can ask what is the total timing on the car,also what airfuel did you shoot for . graph looks good ,like there were no knock events .

[LGAFF]

Might be talking outta my arse but what about adding velocity stacks to increase runner length some...also improves flow, etc..

[Pete]

Nice Kevin.
Now those are some real numbers and backs it with ET/MPH.

Pete