I sold my shorty headers and i want to buy some long tubes for my car. should i get 1 5/8 or 1 3/4? aslo what long tube brands do you recommend as in quality and fitment?

 

1-3/4" for sure... they will be great on your 347!

Mac and BBK both make a set

 

I liked my 1-5/8" Hooker headers...

 

quality and fitment???
http://accufabracing.com/exhaust.htm

trust me George Klass is awsome!

 

Cool thanks guys! i should have this thing up and running in two weeks.

 

I would go with the BBK 1 5/8 since you got a bigger engine than a stock 5.0....

 

1 5/8th's is still too small. 1 3/4 with a true 3 inch collector would be very nice,and work very well

 

Why are there people here telling the OP to buy 1 5/8 headers. He has a FRIGGIN 347!!
Please guys, don't give out poor advice. If you don't know what a person needs please don't guess.

 

JD i couldn't agree more with ya..

fact; my mac 1 5/8 lt's exhaust flange had a 1/8 of an inch diameter blocking exhaust flow on "my" afr 185's....

add that up,and look how much exhaust flow is being bounced back into to the chambers?

then think about the heat that is being kept in a cylinder,cause of it?


i can go on,but this is not the right place,but to the o/p ..please call george klass you will be so happy you did.so will your car

 

Cool thx guys. ill get the 1 3/4. im going to port match them to the exhaust port to make sure it will be nice a smooth.