SPF Performance Side Pipe upgrade selection

[greg schroeder]

Originally Posted by Pman1961

Well, I guess I got home to late to catch Full throttle and Performance Engineering. I'm interested in their products and if anyone else out there uses these companies I would like their feedback. I appreciate all the input for the exhaust. Now I need to start a post on what clutch and pressure plate they would recommend for the tko 600!

For me, Roush 427R single plane intake....

I used a side pipe change which cost 4,000 dollars. The gain in HP and TQ was about about the same as Performance Engineering mentioned for their side pipe mod a few posts back. That sounds realistic.

I got rid of the Superformance original headers that covered about an inch of width for each exhaust port on the AFR 205 heads. The new headers covered nothing and make a little more power.

Another 30 wheel HP or so came from my Pro-Systems carb, 1/2 fuel line tank pick up to carb, better fuel filter, S&B taller oval air filter.

Spec stage 3 clutch, aluminum Mcleod flywheel worked nice. It's very streetable saves a pile of weight and is more fun.

Mickey Thomposn ET street drag radials on rear, 275/60 15 work really nice, fit properly, and they are lighter than larger wheel set ups that are heavier and have heavier very expesive tires which don't stick as good.

Dyno sheet after changes.
http://www.clubcobra.com/photopost/d...3_wheel_HP.JPG