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Discussion Starter · #1 ·
Hello all, this is my first post here. Very nice site.

I took my '63 to the race track last weekend for the first time. I was a little disappointed, partly in the car and partly with myself.

Here are the specs on the car: 327 with edel. alum. heads, 11.50 comp. ratio, edel air gap manifold, holley 700dp, edel .308 cam, 4.11 rear, Richmond 6spd with 3.27 first gear, vette brakes fiberglass suspension, BF Goodrich T/A 295/50/15 in the rear.

The first problem is that the car shook so hard and had so much wheel hop that it actually broke one of the headlight motors off. I can adjust the rear suspension. Should I make it firmer or softer to stop the wheel hop?

Second problem was the times. My best run was 60': 2.110 1/4mi. 13.762 @ 104.69 That's not exactly the performance I was looking for, especially since it dyno'd at 300hp at 5,000rpm (that's all the higher the dyno guy would take it) but the curve was going straight up at that point.

What gives? Am I expecting too much? Any suggestions? Thanks!
 

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that rear is not good with a deep 1st gear. back in the day .a close ratio 4 speed had a 2:20 1st gear & 2:43 was in a wide ratio box . guys would go 3:70 , 4:11, or even 4:56. you are launching with lots of tq. 3:50 - 3:70 is all i'd go.
 

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Looks like you have plenty of room to improve at the start of the run. Your MPH is low for 300 wheel horsepower. I would have expected 109mph or so. Without seeing the dyno sheet, it's tough to tell if there is more to be gained with a different cam or some timing changes.

So are you in 4th gear at the end of the run?
 

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Discussion Starter · #4 ·
I ran 14.3 and 14.2 in 4th at 7,000rpm. The last and best run I shifted into 5th, which gave me a 13.7.

If I could have made a couple more passes, I'm sure I could have run 13.4 or less. Still not great for the money I put in the motor. Looking at the dyno sheet, at 5,000rpm I'm at 300 rwhp, however the curve is going up at least at a 45 degree angle. At peak, whatever that maybe, it should 350 or so.

On the street, I'm in second before I crosss the intersection. Should I start out in second? Heck, I've already pulled out in fifth, when the tranny was acting up.

Either way, it was sort of like being on the beach with Pamela Anderson, a fifth of tequila and a bottle of viagra. I'm not sure how it's gonna turn out, but it's gonna one heck of a ride!
 

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If you were at the top of fourth at the end of the run, I'm with Paulie. Those rear gears are so low that you're wasting time on shifts and having to feather off the start too much. A 3.42 gear or so would probably get you down to 13 flat and save you a shift. Don't know all the ratios for the RG 6 speed, but if it is somewhat similar to a T-56, you would be in good shape. You would probably end up shifting to fourth with about 300 feet left in the pass.
 

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I ran 14.3 and 14.2 in 4th at 7,000rpm. The last and best run I shifted into 5th, which gave me a 13.7.

If I could have made a couple more passes, I'm sure I could have run 13.4 or less. Still not great for the money I put in the motor. Looking at the dyno sheet, at 5,000rpm I'm at 300 rwhp, however the curve is going up at least at a 45 degree angle. At peak, whatever that maybe, it should 350 or so.

On the street, I'm in second before I crosss the intersection. Should I start out in second? Heck, I've already pulled out in fifth, when the tranny was acting up.

Either way, it was sort of like being on the beach with Pamela Anderson, a fifth of tequila and a bottle of viagra. I'm not sure how it's gonna turn out, but it's gonna one heck of a ride!
I looked a RG's website to gather info on your gearing and based on what quickpaulie stated I would try starting in second, if you have some success with that I would Try a higher rear end ratio
 

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IMHO, you need to work on the launch. Get the wheel hop under control first. Next, i agree with others here, new rear gear. You shouldn't be needing to drop it into 5th at the big end. I'd almost be willing to bet that your mph will improve with the higher gear just because you won't be adding that extra shift.
 

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first we need to get traction under control wheel hop will destroy parts, what tire are you running , slicks race only strret slicks what is your reaction time , , soundslike you have the power to run some good times , get the power to the track first good et will follow
 

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My best run was 60': 2.110 1/4mi. 13.762 @ 104.69
what were your other incremental-numbers, i.e. - 330', 660' ET & MPH, 1000' times?

just for reference, the CFI on my '82 was swapped-out for a 650 carb, 'lying-around' intake, and HEI on an other-wise bone-stock Cross-Fire:
it had the 700R4 rebuilt, and 3.73 gears stuffed into the back, and ran easy 14-ohs @ 97, with a best of 13.93x, and short times were 2.0 / 1.9 with the 255 BFG T/A Radials out back

get the car to go 60' consistently quick, make crisp 1-2 and 2-3 shifts, and I suspect your ET will drop

hope this helps

:cheers:
 
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