So a few weeks ago I had Rpm order some long tubes from stainless works. Thought he order 1 7/8 and though it would have atleast 3" coming out. However after they came in I have been told there 1 3/4 with a 2 1/2 coming out. So do I send them back? Or seeing I may only hit it with nitrous and or a blower sometime, keep the 1 3/4 or what?

 

send em back...i run 1 3/4....wish i had 1 7/8"

 

What if u found some az speed marine long tubes for cheep? Lol I mean I'm sure there 1 3/4 tho. How much hp difference from 1 3/4 to 7/8 u think?

 

so say 20+ depending engine cam intake tuning

 

I have a TVS1900@8psi SC on a 6.2L and was told by Nick at ARH and Justin at BB to go with 1 3/4.

 

id run 1 7/8" an nvr look back even if i was supercharged

 

I say keep em. High quality 1 3/4 in headers will be more than enough. I think the only people that see gains going from 1 3/4 to 1 7/8 are the ones running the cheapo ebay headers or pushing crazy horsepower.

 

mine arent cheap ebay headers and i still think the 1 7/8" is a better upgrade

 

1 7/8ths
3 inch y pipe

6.2's have 3.5 inch exhaust stock.

 

For a 6.2L 1 7/8s hands down the 3/4s would work but like iamkeniff theres a 20hp gain between the both we saw an 18rwhp jump going from the 3/4 to 7/8s brand doesn't matter