My big block chevy is going through the traps a bit too high for my liking.In bad air she is about right just a tad over 8000rpm,but when the air is descent she going through between 8300 and a touch over 8400 which scares me.
Dosent appear to be a gear problem using a 3.89 and its got the tall 35 inch mickey.

The above graph is the best run the car ever had.shifting at 7650...fell back about 890 rpm...slip is about 8 percent but trap rpm was 8444!!
I tried shifting a bit higher about 7800 but it dosent affect trap rpm.

I also notice the fallback is a bit inconsistent between 890 and 1050

Im thinking converter tweaking?

I think so too

This graph says the converter is slipping 6% at the stripe, crossing 8400 rpm. It may slip 8% crossing at 8000 rpm? What is the mph crossing at 8000 rpm?

Bigger blower and lock up converter

doesn't look to hi to me....

but if you hold .06 that will help your finish line rpms a lot, js

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but if you hold .06 that will help your finish line rpms a lot, js

haha how do you hold .06 in qualifying?

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Originally posted by seabass:
doesn't look to hi to me....

but if you hold .06 that will help your finish line rpms a lot, js

Jenny, that is advice from the spot drop king of TD who holds many Wally's....

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is the mph crossing at 8000 rpm?

218

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Jenny, that is advice from the spot drop king of TC who holds many

he only races 1000 feet from what I heard

convertor is not configured properly or is not holding a full charge of fluid slip should be around 3%

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Originally posted by rusty:
convertor is not configured properly or is not holding a full charge of fluid slip should be around 3%

I agree, looks like its a little tight down low and loose on top, opposite of what he needs

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Originally posted by jenavet:

quote:

but if you hold .06 that will help your finish line rpms a lot, js

haha how do you hold .06 in qualifying?

1000' drop will get close

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Originally posted by Big Steve:
I agree, looks like its a little tight down low and loose on top, opposite of what he needs

What are you looking at that tells you that? Trying to learn how to read the graph correctly so I can apply that to my stuff.

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Originally posted by Coloradoracer:

quote:

Originally posted by Big Steve:
I agree, looks like its a little tight down low and loose on top, opposite of what he needs

What are you looking at that tells you that? Trying to learn how to read the graph correctly so I can apply that to my stuff.

The shifting at 7600 with 900 rpm fall back then 8400 thru the traps at 8% slip to start with. But I have had conversations outside this forum with jenevet and have a little more info, but thats JMO comparing it to mine and what I feel he needs

i am certainly no expert,i know he has a blower ,so,not real far off down low.could be a little looser.but top end slip seems way ecessive looking at the bottom of the run.at any rate most are running a lot less slip at top.it could be a convertor feed issue though.the less full the more slip

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could be a convertor feed issue though.the less full the more slip

in bad air which is 75 percent of the year its 7 percent slip and trapping at 8050 to 8100??

The transmission fluid may be getting hotter. I might try some thicker trans fluid before spending a lot more money.

Personally I like to see 7-800 fallback max. I shift at 8K and drops back to 72-7300ish. Keeps that blower RPM up down low and where it likes to sing.

i was going to post a pic but thats not simple for me,at indy and i think my last time run mine was at 6%,i run mine looser than most.even at 6 its around 8300 but my mph is higher than 218 usually

with high mph its hard to hold rpm down,like steve said more power and lockup convertor,lol