How mych HP/TQ i lose for not having bigger Throttle body

[Slow5.0]

Ernie, look at what Allmotor95 on here did. He has a stock bottom with TW heads, RPM II intake and a crower cam. He went from a small 65mm tb to a 80mm tb and gained close to 2mph at the track. 1.72mph to be exact According to internet racers, thats "too big of a tb", but hard to argue with REAL WORLD FACTS vs myths huh Break out the dremel and open up your cobra opening to 75mm and run a 75mm. You'll gain at least 1mph. I say you'll gain 8-12hp.

Like i said i already open Cobra intake to 77mm a few weeks ago

Do you have link from Allmotor95 about that

 

[final5-0]

1.58 CFM/HP (theoretical)

OK then, I found this with google.......................................

You guys didn't think I'd try to find something worthwhile out of this stuff did you???

http://www.onlineconversion.com/forum/forum_1060119733.htm

If I understand this correctly, 2.08kg/h = 1cfm

The larger tb had a gain of 25kg

25kg divided by 2.08kg = 12.02 cfm

12.02cfm divided by 1.58cfm = 7.61 fwhp

7.61 fwhp times .85 = 6.47 rwhp gain from the larger tb

I didn't do so good with math in school

Can anyone tell me if I'm even in the ballpark with these numbers

Later
Grady

 

[Touring23]

7.6hp/293hp*100=2.2%
Here's a dyno run at ~1.5% (=3.7hp/245.7hp*100):
http://www.corral.net/forums/showthread.php?t=128810
That's great agreement.

 

[final5-0]

7.6hp/293hp*100=2.2%
Here's a dyno run at ~1.5% (=3.7hp/245.7hp*100):
http://www.corral.net/forums/showthread.php?t=128810
That's great agreement.

There you go Ernan

Three different ways to get to an answer of about 8 rwhp.................

give or take a cuople

Later
Grady

 

[Slow5.0]

Thank you guys

Now if you guys could know 70 vs 75mm lol
I was wandering what are gainst or meybe lose on some rpms with 75mm