viperredduster
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Will just moving my battery to the trunk show even a hundreth in my 60'?
I'd say it depends on how close you are to optimized with everything else.
Do toy have a traction problem?
:thebirdm: But seriously my car is electric 0 emissions. I cant wait to upgrade to one of those engine things.No motor? And a motor is electric.
Trunk mounted batteries tend to help traction, but since traction is not a problem for you my guess is it won't help much.
I'd look to making the car lighter not heavier (trunk mounted battery adds weight).
If traction isn't a problem, in other words, you are not spinning, then your carb set-up and/or converter are wrong. It would be possible to be well into the 11's or even 10's with a properly tuned combo like yours - footbraking! But there are a lot of possible variables holding the car back. Personally I think the carb is too big and you could use more gear. I don't use a trans brake and don't know what your converter is doing anyway. But weight isn't what holding you back. However, moving the battery from the front to the rear will help the car be more consistent on a marginal track. The Cal-Tracs should also be readjusted according to instructions anytime anything is done with the weight.
Actually, most specs are milder on my engine because it's built to Stock class IHRA crate motor specs. But I'm just offering my opinion that some of the components are hurting the car's performance because the aren't working with the rest. You will be somewhat restricted with pump gas and 4.10 gears, but you appear to be bogging the engine with the trans brake and big carb. (I haven't seen the video.) It may be possible to tune a 750 double pumper to leave better footbraking, but it takes time Not enough air velocity and torque with the big carb and not enough gear to let the engine rev fast enough under load.
I,ve also pulled the front swaybar pins to help transfer weight to the rear.
Is that the video you referenced being in the other thread? I couldn't find it elsewhere.
Its hard to tell a lot from that video, but it doesn't look like the car is transferring weight as well as it could be. (Though you're hooking a lot better than that Ranger-LOL). Are you leaving on the brake in that vid?
What RPM do you leave at? What does your front suspension consist of?
What does the car run 1/8th and 1/4?
Moving the battery might help, but there are probably other changes that would be more beneficial at this point.
Steve
Locomotion: I was thinking what tire do you run with the 4.30 gear? I only run about a 28 inch tall tire.
I run a 4.86 gear with 9"x30" tall Hoosier lightweight radial slicks and a 2.71 low gear 904. But radials don't grow much on the top end so rpm's are higher than with bias ply slicks. I don't recall what the difference was when I switched years ago. Radials are faster but more sensitive to track conditions and will spin easier. It running out of breath at the finish line turning around 6,700 because I have unported stock heads. I leave between 3,000 and 3,500 footbraking and my converter flashes to 5,100-5,300. (Autometer playback tach shows actual highs & lows instead on one having to remember what they "think" they saw for converter flash, shift points, rpm drops, etc.)