I have a +4 in the front and +6 +8 +12 arms for the rear. The chassis is an old school XULW lonestar. All I can tell you is +4 is nothing.....in a drag chassis. If your planning on hooking up hard outta the hole then I'd go more out the front. Mine rode the wheelie bar very hard at +4. Loads of fun if you like to ride the 100 yard wheelies!!
My rigid chassis is 30 something inches out the front and +8 in the rear. It carries the front end 80% of the track. Its not violent on the wheelie bar like the short chassis is. Even with a +12 arm the short chassis slammed the bar hard.
Maybe others will voice their opinions. Good luck, I would go +10 minimum.....thats my opinion.
My rigid chassis is 30 something inches out the front and +8 in the rear. It carries the front end 80% of the track. Its not violent on the wheelie bar like the short chassis is. Even with a +12 arm the short chassis slammed the bar hard.
Maybe others will voice their opinions. Good luck, I would go +10 minimum.....thats my opinion.