427 Assembled - ZR-1 Net Registry Forums

tpepmeie · 08-11-2012

Here is the dyno chart, in SAE corrected values. Overall a frustrating day really. Didn't really tune it because the damn equipment died. Only made three full pulls... first one got tire spin from 5000 rpm up. Added some sticky spray to the rollers, and got this result. Tried to duplicate it, but intake air was hotter, and lost 3 degrees timing across the board, so 10hp lower.

Air temp in the dyno bay was 92F, and the coolant was over 200F. Plenum was heat soaked. Intake air temp in the air horn was >150F!!! Next time I am bringing the ice bags for the plenum.

The chart is a little funky, with the data dropout right about the worst spot (6800), but this is the best I could get on this day.

08-11-2012	#11
tpepmeie Join Date: Aug 2005 Location: Fishers, IN Posts: 815	Re: 427 Assembled Here is the dyno chart, in SAE corrected values. Overall a frustrating day really. Didn't really tune it because the damn equipment died. Only made three full pulls... first one got tire spin from 5000 rpm up. Added some sticky spray to the rollers, and got this result. Tried to duplicate it, but intake air was hotter, and lost 3 degrees timing across the board, so 10hp lower. Air temp in the dyno bay was 92F, and the coolant was over 200F. Plenum was heat soaked. Intake air temp in the air horn was >150F!!! Next time I am bringing the ice bags for the plenum. The chart is a little funky, with the data dropout right about the worst spot (6800), but this is the best I could get on this day.