Is 2 inch ok?

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Sparky

Sparky

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The fish has a 340, 650 Holley,Air gap intake, electronic ignition, not sure about the cam as we have not ever opened the motor, pretty sure it is not stock....here is the question, I have a set of TTI heasders that I will be installing soon,the exhaust is 2 inch, if I leave the 2 inch pies and exhaust on how much wil it affect the performance of the intake and headers? I am reluctant to spend the money on 2 1/2 inch if it is not that big a deal.
Thanks
 
go 2 1/2" especially since you are starting from scratch. you'll bottleneck pretty good going from the 3" collectors to 2" exhaust pipe in my opinion.
 
I agree, if it were 2.25" I would say you could get away with it but 2" doesnt belong on a performance car.
 
Thanks guys pretty much what I thought. Now I have to explain to momma why I need to replace a perfectly good exhaust system..oh well
 
Sparky said:
The fish has a 340, 650 Holley,Air gap intake, electronic ignition, not sure about the cam as we have not ever opened the motor, pretty sure it is not stock....here is the question, I have a set of TTI heasders that I will be installing soon,the exhaust is 2 inch, if I leave the 2 inch pies and exhaust on how much wil it affect the performance of the intake and headers? I am reluctant to spend the money on 2 1/2 inch if it is not that big a deal.
Thanks
Click to expand...

If you already have a 2" system on the car you are only going to see a 5-10 HP differnce between it and a 2.5" system. So if bucks are an issue I would go with what you have for now.
 
I would have to agree with dgc333 if your present system is newer and in good shape I would leave it be then replace it with a larger system when it goes bad.


Chuck
 
Mmmm I would really rather throw some money at other things for the car right now, so I will keep the two inch as long as I am still going to feel some new uummppff when I put those headers on.
 
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