New 383- what's going happen?
10-14-2018, 10:36 AM
#21
Race Director
I wouldn't be that skeptical about the power the builder claims, with the heavy driveline losses, plus parasitic losses from the accessories, possible loss from air flow under the hood etc...
FWIW, I dynoed my engine on the dyno and it made 657/670. Without the air hat (air turbine) and a little hotter it made 638/660.
In the car going through a T400 and 10" converter, it made 460 rwhp. That's 28% loss. I am spinning full accessories, and the car headers a only 1 7/8" vs 2" on the dyno...
460 rwhp doesn't sound like much does it....?
But 127 mph at 3700lbs is decent. My point is, chasis dyno numbers are useless.
FWIW, I dynoed my engine on the dyno and it made 657/670. Without the air hat (air turbine) and a little hotter it made 638/660.
In the car going through a T400 and 10" converter, it made 460 rwhp. That's 28% loss. I am spinning full accessories, and the car headers a only 1 7/8" vs 2" on the dyno...
460 rwhp doesn't sound like much does it....?
But 127 mph at 3700lbs is decent. My point is, chasis dyno numbers are useless.
Last week I beat the crap out of a Dodge Demon twice
Last edited by pauldana; 10-14-2018 at 10:39 AM.
10-14-2018, 11:11 AM
#22
Team Owner
The whole problem with your vette and my vette is that they are not optimized for drag racing. If you did a drag analyzing program with 3000 lbs and 525 rwhp. You should be in the low 10's i'm guessing even with a 5 speed. The problem I had and I did 10 nearly back to back runs at my local NHRA track on a Friday night open track. the problem was the track wasn't prepped like an actual event day. It is hard to get a consistent launch.