PSMCR 2002

[Chevy454]

Sam:

Those are some good suggestions, all of which I had heard before, but never tried (except boxed arms). It's odd, though, that I was talking to an LS-6 owner/racer this weekend about this very thing, and he has BIG TIME problems as well. Runs an air bag, tried No Hop bars (DID NOT HELP!), and has poly bushings and boxed arms. He HATED the No Hops, as he had to drill his housing, and he described them as a waste of money. I believe he still has the air bag/boxed arms, and he ran a 12.80@110, but still hopped a tad. Seems worse on stick cars, probably due to the amount of "shock" to the tire?

[Seattle Sam]

Rob,
You are right about the four-speed - a much more brutal launch, which can shock that rear suspension into massive hopping. With the boxed arms, polys, and no-hop brackets my Chevelle runs a 12.98 @104, no sign of wheel hop any more (although it is an auto).
I believe it's important to "tighten up" all aspects of the rear suspension, and the boxed arms and poly bushings go a long ways to accomplishing that. I wasn't too thrilled about drilling my housing for the no-hop kit, but I was definitely thrilled with the results. That kit relocates the upper arm rear mount upwards; the good news is there are also BOLT ON brackets that relo the lower control arm rear mount downwards to achieve the same effect. This is a very common traction trick on fourth gen Camaros.
BMR Fabrications http://www.bmrfabrication.com/A-Body.htm USED to sell these brackets under part number CAB-004, I would give them a call and see if they have any around (picture attached). I also put in the air bags, then took them out as I didn't like the street ride (too much rear bounce). But there is nothing like a passenger side bag to keep the chassis square on launch. Here are a couple of set-ups that have worked for people. http://www.chevelles.com/racing/tricks.html
Hope this helps!
-Sam

[L78Impala]

Rob,
here are the photos of the 65 Vette / Impala exhaust manifolds.

they can be found in the Paragon Parts

catalog.http://www.corvette-paragon.com/

http://www.parts123.com/parts123/yb....0000095a~AAQLT

&

http://www.parts123.com/parts123/yb....0000095a~AAQLS

The above are links to photos of both the left and right hand manifolds.

I hope this works. [img]/ubbthreads/images/icons/tongue.gif[/img]
Billy

[Hugger]

Here's a shot of the Stude that has the R3 setup:
Studebaker R3

[John Brown]

Rob, take this from an "old" low buck racer. Believe the guy that said to lower the rear of the car. It worked for me on a 68 Chevelle (4sp), 78 Malibu (4sp) and 85 Monte SS(auto). Best of all it's cheap, and if you dont like it, you haven't cut up your car.

[Chevy454]

John:

I've heard that very thing from several other Chevelle guys, and Dave (NeatSS) and I have had this very discussion. The A-bodies are VERY sensitive to ride height, and it seems the lower, the better. Our '69 L-78 car sat low, but looked great, and didn't hop. My LS-6 sat high, and hopped like it was mad at the world! Anyone had any luck with new springs that bring the car down a tad, but will work with my F70-15s?

[JoeC]

I believe the pinion angle has a lot to do with wheel hop. I see many cars run adjustable control arms so you can change the pinion angle at the track.

[JChlupsa]

Hawaiian Style FUN daily street driven Vette 12.40 1/4 mile 412 Mitchell SBC
http://www.crass.net/carstuff/cappy1.wmv