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Old 08-05-2010, 01:32 PM
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headers size

hallo, i new here and i have a duster whit a 360 sb
and 1.5/8 headers now, that i wonder is the different
in hp/tq betwen what i have now and step 1.5/8-1.3/4 tubes headers ?

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Old 08-05-2010, 02:41 PM
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Howdy Duster.....maybe at EXTREMELY high rpm or with a blower motor you would see a difference but with a naturally aspirated street motor you'll never feel it. Also you could actually hurt your low end grunt with larger tubes...plus the fitment issue....not worth it.
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Old 08-06-2010, 03:10 PM
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thanks for your info,
The engine i going to run is a street/strip 360inch and i have : ported edel heads, rpm airgap, holley 750cfm vacuum, free flow
muffler 2.5inch and pipes, woodoo cam 60404 or xe275hl..i whant to rew to about 6000-6400rpm.
Have you a advice to even a better cam for this set up ?
Right now : 2500rpm stall,
3.21 gears/have a nice day
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Old 08-06-2010, 07:21 PM
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I would think either cam if they are close to the same specs but I like Comp Cams. The most important thing though is to change the rear end gears to a 3.70 - 3.90 for the street. With the 3.21's it will be a pig and defeat all your good equipment and money spent.....good luck
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Old 08-06-2010, 07:52 PM
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2bbl Holley mods....

What are some carb mods for Holleys? I've came across one where you taper the top part of the booster and the bottom also.switching to annulars helps too. What else? I don't race,have any classes,no rules.just for my car.thanks
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