The following dyno tests were performed on a SuperFlow SF901 engine dyno at the University of Northwestern Ohio. The power numbers are standard corrected data for 29.92 inches of Hg, 60 degrees F, dry air. The engine was tested with full accessory drive and exhaust; as in the car, with catalyst, then without the catalyst. As you can see, the 3" catalyst I am using uses very little power and drops noise levels dramatically. Here is a short description of the engine I ran that came out of my GTA:
L98 350 cast iron, factory roller block, bored .030 over | |
Trick Flow Gen 1 Twisted Wedge aluminum heads | |
GM LT4 HOTCAM, (218/228 duration @.050, .492 lift) | |
1.5 ratio roller rocker arms | |
11:1 compression | |
Superram Intake w/ Edelbrock hi-flo base | |
52mm throttle body | |
stock bosch MAF sensor w/o screens | |
Heddman shorty f-body headers w/ 1.625" primary tubes | |
Heddman 2.5" mandrel y-pipe for f-body | |
GM 3" 3-way catalytic converter | |
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