Its alittle more than I like Tod (7800 rpm) I want to try a 513, I'm thinking it might take some of the intial hit off the tires at launch making it hook better and possibly MPH & ET better, it definetly will be easier on the motor, several guys I've talked too say a 513 and a glide is just about perfect if you got some grunt in the motor and I'm thinking mine does. :wink:
I know of 2 guys at the track that have 513's and similar BBC set-ups and they dont have the hook spin probem that I've been having and they are both running in 560's, who knows though, it might make it worse or slow it down.
Cp