10's on $5,000 ?
When the car and combo isn’t “junk”.......it’s not as obvious as 14.35@117.
What if it was 11.40@117, but you were expecting 118-119.
Is it making enough power to run 118-119 and the converter is slipping too much, or the fuel pump can’t keep up?
Or does it only make enough power to go 117.
What about 11.10@117.
Is it running into a valvetrain stability issue at the top end? Converter slipping?
^^^this
I use the wallace calc to show what a car
"should" run if all is well, its based@sea level for a car that hooks average>good. Its worked out nigh on exact for all my 2 race cars and some of my fellow racers slips. You have to get to know how to interpret things you are being told by the numbers. But here's some numbers from a car that actually runs over here and gives an example for the above quote that will mess everything up for calcs, whichever you use, wallace/moroso ruler etc.>
2950lb@the line car, 14:1CR 572 all ally wedge, MW SR heads, .609" s/roller, 1050 Dom, mono's/caltracs, 10.5Wx31's, 4.56 gear, don't know converter stall, runs around 1.40>1.44 60's and has run a best of 9.66@
131+change...If you input those parameters into wallace it shows you this with 646fwhp as the hp mark if you go by ET>
60 Foot E.T. : 1.34
1/8 Mile E.T. : 6.10
1/8 Mile Trap Speed : 111.47
1/4 Mile E.T. : 9.66
1/4 Mile Trap Speed : 138+
1/4 Mile Trap RPM : 6,858
with 546hp as the mark for mph>
60 Foot E.T. : 1.42
1/8 Mile E.T. : 6.45
1/8 Mile Trap Speed : 105.40
1/4 Mile E.T. : 10.22
1/4 Mile Trap Speed : 131
1/4 Mile Trap RPM : 6,485
work on that and understand whats going on here, not easy.
Reason for the 1st example not enough head/cam, perhaps tune is off some as well, engine runs out of steam at some early point, rest of run is just wasted, they were running even slower ET's@128>130 best until they started short shifting but still had same gear/tyre. In this instance a dyno would be a good tool to use to see where the power is and isn't. The real cure would be better heads, ported -1's minimum and a cam that matches, along with a gear change, probably down to 4.10.
