Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - need help in getn to a 6k shift point drag race for blower car
View Single Post
  #2 (permalink)  
Old 12-09-2012, 11:25 PM
painted jester's Avatar
painted jester painted jester is offline
TAKE A KID TO A CAR SHOW
 

Last journal entry: My grand Daughter at a car show
Last photo:
Join Date: Jan 2011
Location: Central Michigan
Age: 68
Posts: 1,787
Wiki Edits: 0

Thanks: 98
Thanked 265 Times in 217 Posts
Nitrous or supercharged engines affect converter selection. An engine with super charger produces more torque than it would if it was normally aspirated ( your running very low boost for a drag car) That means a blown engine needs a converter with a lower stall speed range. Otherwise, the converter will stall too high, causing it to slip and the engine will rev too quick and eventually the converter will self-destruct due to the extra heat generated. Your converter may also be ballooning!

Whats the overlap on the cam, Or give he cam specs? Whats your compression?remember, with a supercharger you aren't relying on the natural vacuum of the engine to pull in air, it's already there and in more abundance than would normally be without the Super charger. that means it's going to force air out through the exhaust valve during overlap. excessive overlap isn't something you want on a boosted engine, supercharger

but aside from the overlap, it's not necessary to have your valves open up for so long either. those kind of cams make a lot of power really high in the rpm range, where superchargers start to lose efficiency. not to mention it causes a lot more stress on the springs since they have boost pressure to contend with also.

Jester

Last edited by painted jester; 12-09-2012 at 11:40 PM.
Reply With Quote
The Following 2 Users Say Thank You to painted jester For This Useful Post:
1Gary (12-11-2012), menoaz (12-10-2012)