Finally made it to the dyno.

[jhc7399]

Throttle Body is dored to 62mm?

 

[JohnX]

I'd really like to know where these 80-90 hp readings are coming from? Engines with 200k miles taken in Denver or what? I think it's only fair to compare apples and apples. I have personally seen a freshly rebuilt 4.0 bored .030 over and NO other mods turn 145hp. The OP is talking about a fresh built motor, that's what we should be comparing.

Not that it matters, I just feel that for that kind of investment I'd want to see more than a 50rwhp gain.

 

[trippled]

6200ft and 280k! Correction number play a role too. Mine made 87 uncorrected true wheel hp on a super flow dyno. Corrected number can change more than 40 hp, and mustang dyno are notoriously high.

 

[gradon]

Not the internal diameter of your 62mm tb, the internal diameter of the fipk where it sits on your tb(go ahead and take it off and measure it).

 

[nicpaige]

Mine after 247,000 miles this bone stock power plant put out 135 HP and 177 TQ to the 31.50 tires on a DynoJet dyno. Stock everything. Getting ready to dyno the stroker before the end of the month for comparison.