TST # 4 plate

[HEMI®Dart]

Does anyone know the HP/TQ specs of the plate in the stock position in a 175/180 HP Pump? Can't find any info on it.

 

[Joseph Donnelly]

I dyno'ed the 5 and 4 in a 98 12 valve (of course) automatic. both made about 280 peak hp, but the curve was a little fatter in the 1500-1900 rpm region with the 4. the max extra torque was 70 ft lb for the 4 over the 5, about 20 hp more in mid range. As a result, the 5 is "safer" for the automatic but the 4 does respond a bit better.