2.5 dual exhaust bottleneck?

Old 02-06-2008, 08:29 PM
  #1  
slagburn
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Aug 2007
Location: Fort Collins,Co
Posts: 3
Default 2.5 dual exhaust bottleneck?

Hi, kind of a dumb question but sometimes you gotta ask. I have a 410 ci engine I rev to 6500, looking for at least 550 flywheel hp. The headers are big enough but I don't know about the rest of the exhaust. It's dual 2.5, mandrel bent back to two Magnaflow round mufflers. Would I see that much difference going to dual 3 inch? The motor doesn't top end like it should and I think the exhaust is plugging it up.

thanks.
slagburn is offline  
Old 02-07-2008, 01:32 PM
  #2  
bjuice
Administrator
RACING JUNKIE
 
bjuice's Avatar
 
Join Date: Apr 2003
Location: Greenville s.c.
Posts: 3,239
Default

what size are your headers ?..2.5 mandral bent is still pretty small...your mufflers could also come into question..where do you have them mounted..test have showed the closer to the rear you mount them the better.

off the bat i would say a minimum of 3 inch exhaust..

now there are other things that could be a result in poor top end also..Gear,camshaft,Carb etc......but i would start with exhaust
__________________
Bjuice..

"I'M YOUR HUCKLEBERRY ! "
bjuice is offline  
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service