Header size
- Thread starter Iowan
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Rusty Nail
Full Access Member
- Joined
- Jan 29, 2015
- Posts
- 9,789
- Reaction score
- 9,685
- Location
- the other side of the internet
- First Name
- Rusty
- Truck Year
- 1977
- Truck Model
- C20
- Engine Size
- 350sbc
2.25 pipe will serve you better since you're not being a super street racer after max power with a "wind em up" camshaft. 
I ran 2.25 pipe with a 305 when gas mileage actually occupied space in my head. When I built the 350 my new pipes were 2.5 with 3 inch , 40 series Flows for a Corvette (4tips)...but I bracket raced it in ET STREET and drove it to work. That 362 has an ERSON AH-8? Extreme flow .492-.492? 228° & 108 ?Single pattern oldschool (late 90s) MAJOR LEAGUE wind up....afterburner comes on about 4k. 28s and 3.73 + low weight get it moving fine.
True roundy round on the street.
I'm plan to run 2.5 in my Blazer and the 327/350hp super duper oldschool cam in that 350 mostly for cool factor plus it will sound rad and rev to the moon!
The 400 has a Comp Cams 268H installed, I'll prolly leave it for now but I don't think I like it, it seems lazy gettin up and that ain't cool.
crappy response.
The kids in here talking about runnin 3 inch pipe in their grocery getter are NOT cool, nor fast. They too have crappy response but because of different cause..they got no velocity.
You don't need that y pipe. Save your money. Go for cheap stuff that will sound cool - you'll never know the difference.
I ran 2.25 pipe with a 305 when gas mileage actually occupied space in my head. When I built the 350 my new pipes were 2.5 with 3 inch , 40 series Flows for a Corvette (4tips)...but I bracket raced it in ET STREET and drove it to work. That 362 has an ERSON AH-8? Extreme flow .492-.492? 228° & 108 ?Single pattern oldschool (late 90s) MAJOR LEAGUE wind up....afterburner comes on about 4k. 28s and 3.73 + low weight get it moving fine.
True roundy round on the street.
I'm plan to run 2.5 in my Blazer and the 327/350hp super duper oldschool cam in that 350 mostly for cool factor plus it will sound rad and rev to the moon!
The 400 has a Comp Cams 268H installed, I'll prolly leave it for now but I don't think I like it, it seems lazy gettin up and that ain't cool.
crappy response.
The kids in here talking about runnin 3 inch pipe in their grocery getter are NOT cool, nor fast. They too have crappy response but because of different cause..they got no velocity.
You don't need that y pipe. Save your money. Go for cheap stuff that will sound cool - you'll never know the difference.
Last edited:
Iowan
Loud and Proud American!
- Joined
- Oct 12, 2016
- Posts
- 762
- Reaction score
- 214
- Location
- Iowa
- First Name
- Calvin
- Truck Year
- 1999
- Truck Model
- K1500
- Engine Size
- 350 crate
I just want to use the one pipe I have already have I hate those stupid teenage loud crap civics and stuff like that. performance is what I'm after. but thanks.
Georgeb
Full Access Member
- Joined
- Apr 30, 2015
- Posts
- 3,259
- Reaction score
- 214
- Location
- Wisconsin
- First Name
- George
- Truck Year
- 2003
- Truck Model
- K10 Burb Z71
- Engine Size
- 5.3
Are you saying you want to use headers but run a single exhaust? If thats the case you may want to stick with the manifolds and Y pipe, ditch the catalytic if you don't have inspection to pass and install a good turbo muffler and tail pipe and call it good. 2.5" pipe will do fine for you.
Similar threads
