I'm kinda curious. Put a SuperChip(speed limiter removed) on my SVB1 processor, a K&N air filter, and I opened up the fender intake. Truck is an '01 F-150 XCab XLT Sport Flareside 5.4 with 3.55 LS and P275/60R17 BFG. What kind of top end would I expect to find on it? It's easier to ask(and quite possibly less painful) than to do the obvious. My guess is around 115 to 120. How close am I?

 

HI!.... CHIDIVER : I've been able to get a best of 137MPH out of mine and that is with 4.10 gears and 275/60/R-17 goodyears. It takes a while but I can bang off 130MPH with in 1 mile. Then it takes me about anothe 2 miles to get up to 137MPH!lol! I'm curious to see what my truck will hit for top end after I install the MAGNACHARGER supercharger next year.

 

Chidiver,

My WAG wouild be 115. I can get 113 with mine.

Regards

Jean Marc Chartier

 

Neal, If your gear ratio was lower such as a 3:73 or 3:55's
could you achieve a higher top end?