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Headers, whats the real gain?

Started by Lord Warlock, January 30, 2014, 02:03:39 AM

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chargd72

#50
February 02, 2014, 11:38:20 PM
Quote from: Homerr on February 01, 2014, 04:49:45 PM
Quote from: chargd72 on January 30, 2014, 10:23:22 AM
Almost a 9% increase in HP for that low performing 440.  Not bad at all.

Hmmm, my calculator says 3-5%.

Yep, I agree with you. It's actually almost right at 5%. That was my poor attempt at mental math.

          '72 Charger SE 4bbl 318                          '76 Power Wagon 400 W200                                 2011 (attempt at a) Charger

1974dodgecharger

#51
February 03, 2014, 12:22:53 AM
Quote from: c00nhunterjoe on February 01, 2014, 08:33:52 PM
Whats the real gain over manifolds? My rough opinions:

Bone stock- 5 hp
mild (mild cam, intake etc)- 10-15
Drag- (choppy cam, heads etc) 15-25
Race- (full build, 12:1, big heads, big solid roller etc) 30+

There, thats my opinion


thats based on everything running optimal!

c00nhunterjoe

#52
February 03, 2014, 08:48:21 PM
Quote from: 1974dodgecharger on February 03, 2014, 12:22:53 AM
Quote from: c00nhunterjoe on February 01, 2014, 08:33:52 PM
Whats the real gain over manifolds? My rough opinions:

Bone stock- 5 hp
mild (mild cam, intake etc)- 10-15
Drag- (choppy cam, heads etc) 15-25
Race- (full build, 12:1, big heads, big solid roller etc) 30+

There, thats my opinion


thats based on everything running optimal!

I figured that was a given. Maximun output doesnt come without a little tuning.
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