torque gains

[tomtom72]

Originally Posted by Kevin

paul,
thanks for the graphs but it's not really what I was looking for. as I said, on marcs site he has a break down of porting adds x hp, headers add y hp, flywheel adds z hp, I was wondering if there was a corresponding break down for torque gains

Kevin, Marc displays the results in a way that most people can relate to. So HP is the often quoted number. It's the "headline" of the story because most of us what to know "how much more HP do I get for my coin?"

That said, along with the HP gains there is a concomitant increase in T/Q output because T/Q output can be translated into HP output and vice versa using a formula. The reason that HP increase figures are always given is because the T/Q gains are a smaller number than the HP gain number, and to quote HP gains gives us a bigger number. It's a better "headline".


Tom

[Corbusa]

Is the 415 a stroker kit? different crank etc?

[Kevin]

Originally Posted by Corbusa

Is the 415 a stroker kit? different crank etc?

different crank, rods, pistons, liners, ect

[Paul Workman]

Originally Posted by XfireZ51

Pretty lousy fuel curve on the stock motor!

No chit!! That's why the rpm was limited to 6k.

P.

[Kevin]

Originally Posted by Paul Workman

No chit!! That's why the rpm was limited to 6k.

P.

could that be due to the restrictive borla on there?

[XfireZ51]

Originally Posted by Paul Workman

No chit!! That's why the rpm was limited to 6k.

P.

I was really commenting on the mid rpm curve.
Terribly rich and badly controlled overall. Unlikely exhaust is the culprit here.

[Paul Workman]

Originally Posted by XfireZ51

I was really commenting on the mid rpm curve.
Terribly rich and badly controlled overall.

Oh. Well, it was when it crept over the 14.0 value (on the lean end) that we got concerned. In any case, it was making pretty good power. It was stock except for a Borla exhaust.

Changing the subject, looking at torque (speaking of torque) the stock vs. my "500" package results - as well as yours and all of the FBI tunes, for that matter, show NO reduction of torque in the low/mid range, compared to stock. In fact, they show increases. So much for that tired old saw, "Increasing port runner size will hurt low/mid range torque..." Doesn't seem to hold true - at least as far as the stock LT5 goes, huh?

P.