Huh. Sounds like CureRide. They're not stiff. Very little resistance to bump (compression) and pretty
significant rebound (in other words, noticeably different between bump and rebound). Photo is some
50176 rear CureRides, fresh from the box (from about 2006 or so)
Slapper bars will definitely arrest spring wrap-up. Handling on the road course would be effected
because as you're trying to exit the corner, the gas is mashed and the slapper is smack up against the
spring, which usually leads to oversteer.
You shouldn't see this extreme on the street because you shouldn't be taking corners at 10/10ths.
But then again you shouldn't be seeing wheel hop either that would require slappers.
Maybe stiffer sidewalls on your 17's are somehow contributing to the issue.
Really doesn't make much sense.
I've got some really old 16" Kumho Victoracers (2005) on my '66 and they are hard as a rock and stiff.
No hop though.
ex-Global West GM
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Last edited by GT289; 12-23-2015 at 08:49 PM.