Posted By: 71RTC
loose 750lb et change? - 12/18/13 06:26 AM
got a new car with more tire and 4.88 gears any idea of what kind of et change can I get, old car has 4.10s and 750lbs heaver and runs 6.50 to 6.40 on motor??????
loose 750lb et change?
Posted By: 71RTC
Re: loose 750lb et change? - 12/18/13 06:28 AM
Posted By: pittsburghracer
Re: loose 750lb et change? - 12/18/13 06:31 AM
You will get a lot better info if you include transmission and engine combo in your post. Going by the book with the info you gave if you ran 10.75 before a guess-ta-ment would be 10.00's. More info better guess-ta-ment.
Posted By: 71RTC
Re: loose 750lb et change? - 12/18/13 06:54 AM
sorry it has a 727, 511 with indy -1cnc, engine made 766hp on motor and has a two stage plate with 150hp on each shot but those times were on motor (kept breaking the trans even on one shot), the engine is in my 71 challenger but the car is too nice to tear up so was gunna pull the 511 and put in this stealth, thanks it ran 6.40 at 108
Posted By: Mopar-Al
Re: loose 750lb et change? - 12/18/13 06:57 AM
I saw that car forsale on CL FT Payne area. Looked heavey in the pics. Good luck with it
Posted By: Sport440
Re: loose 750lb et change? - 12/18/13 07:00 AM
Id say 5.8s to 5.9,s You could bust in the 5.7,s but I doubt it with a new combo. Heck you may not get down the track at all. 
How good are you at putting new combos together. 
How good are you at putting new combos together.
Posted By: 71RTC
Re: loose 750lb et change? - 12/18/13 07:01 AM
yeah I weighed it last night 2100lb as a roller but my car now is 3850lb so it will be a lot lighter and still has a lot that I will take out of it, I traded a 4wd truck for it so im not hurt in the trade
Posted By: pittsburghracer
Re: loose 750lb et change? - 12/18/13 07:03 AM
4:88 gears will probably have to go. I ran a 4:30 gear in my NA Daytona but even that may be to deep for you with the NOS.
Posted By: pittsburghracer
Re: loose 750lb et change? - 12/18/13 07:06 AM
What is the cage cert legal to?
Posted By: 71RTC
Re: loose 750lb et change? - 12/18/13 07:07 AM
Quote:thanks I have a 4.10 I can try, never ran anything lower than that!!!
4:88 gears will probably have to go. I ran a 4:30 gear in my NA Daytona but even that may be to deep for you with the NOS.
Posted By: 71RTC
Re: loose 750lb et change? - 12/18/13 07:09 AM
Quote:i don't know! lol I think it was a grudge race car
What is the cage cert legal to?
Posted By: moparguy7074
Re: loose 750lb et change? - 12/18/13 12:59 PM
Quote:
4:88 gears will probably have to go. I ran a 4:30 gear in my NA Daytona but even that may be to deep for you with the NOS.
For 1/8 mile racing?
Posted By: pittsburghracer
Re: loose 750lb et change? - 12/18/13 02:34 PM
Quote:Quote:
4:88 gears will probably have to go. I ran a 4:30 gear in my NA Daytona but even that may be to deep for you with the NOS.
For 1/8 mile racing?
If he's locking himself into 1/8 mile he may be fine but from the little I read on power-adders they head for a higher gear for some reason. I would guess to soften the hit and let her eat.
Posted By: jamesc
Re: loose 750lb et change? - 12/18/13 10:06 PM
if you stage that car @ 3000# which might be on the heavy side depending on things and it works decent it should run low 9s and high 5s (5.80ish) or maybe even crack 5.70s as mentioned
in a race car weight is king, if you don't need it get rid of it.
personally depending on what you're doing and what you want i would be seriously considering a glide
in a race car weight is king, if you don't need it get rid of it.
personally depending on what you're doing and what you want i would be seriously considering a glide
Posted By: KatFysh
Re: loose 750lb et change? - 12/19/13 01:22 AM
isn't the "rule of thumb" 100lbs= 1/10 of a second? You are changing to a totally new ride though. You may be starting from scratch.. 
Posted By: MR_P_BODY
Re: loose 750lb et change? - 12/19/13 01:33 AM
Quote:
isn't the "rule of thumb" 100lbs= 1/10 of a second? You are changing to a totally new ride though. You may be starting from scratch..
In a slower car thats true... but faster you get it takes
more power... in his case starting with 2100# and
add 700# then the driver thats 3000# or better so
in the end it COULD be a 9.0 car
But the car looks good
Posted By: 540dust
Re: loose 750lb et change? - 12/19/13 02:02 AM
100 - 110 lbs per tenth in the quarter would equate to 5.93-6.08 et in the eighth mile. That's my guess.
Posted By: Eric
Re: loose 750lb et change? - 12/19/13 03:15 AM
Went 6.70's in my Duster at 3250#....bought the Arrow at 2300# with a similar motor I went 6.00. Now with some more power (approx. 675-700hp) I have been 5.62. If you are really making 750 I would think the car should run in the 5.90 range at 3000# 
Posted By: 71RTC
Re: loose 750lb et change? - 12/19/13 05:04 AM
thanks for the input, I was thinking about the same (5.80,.90), just checking! hoping for low 5s on the hit
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