Header tube size?
#1
Senior Member
Thread Starter
Join Date: Mar 2002
Location: Somewhere over the rainbow
Posts: 792
Likes: 0
Received 4 Likes
on
3 Posts
Header tube size?
I am looking at the headers off a 90 Vette and the tubes are
1-1/2" diameter. They are welded on the inside which reduces
the diameter to about 1-1/4" or less on some. If I reweld them
on the outside and grind the weld out from the inside is a 1-1/2"
tube large enough or will it restrict flow too much?
I see that most headers are 1-5/8" or 1-3/4" diameter.
Is 1-1/2 too small?
1-1/2" diameter. They are welded on the inside which reduces
the diameter to about 1-1/4" or less on some. If I reweld them
on the outside and grind the weld out from the inside is a 1-1/2"
tube large enough or will it restrict flow too much?
I see that most headers are 1-5/8" or 1-3/4" diameter.
Is 1-1/2 too small?
#2
Supreme Member
Join Date: Aug 2001
Location: Orygun
Posts: 2,747
Likes: 0
Received 0 Likes
on
0 Posts
1 1/2" is certainly small, but the rewards are in flow. A 1 1/2" header will maintain volocity and scavaging better than manifolds with rough casts and 90° turns.
This would get more answers on the exhaust board.
This would get more answers on the exhaust board.
#3
Senior Member
Thread Starter
Join Date: Mar 2002
Location: Somewhere over the rainbow
Posts: 792
Likes: 0
Received 4 Likes
on
3 Posts
Ok, heres my situation. I have a Jaguar with a 350 TPI in it.
It now has a pair of cast iron ram horns on it. Because of room
restrictions I have to stay with a center dump manifold.
WIll the Vette header flow better than the ram horns?
It now has a pair of cast iron ram horns on it. Because of room
restrictions I have to stay with a center dump manifold.
WIll the Vette header flow better than the ram horns?
Last edited by Swapmaster; 05-17-2002 at 02:28 PM.
#4
Possibly, although I think that a custom setup would be better suit your needs with the space restriction. Some block hugger headers may be what you want to look at. And the smaller size does have a better scavenging effect than larger tubes.
Thread
Thread Starter
Forum
Replies
Last Post
Hotrodboba400
Firebirds for Sale
3
12-10-2019 07:07 PM
1Aauto
Sponsored Vendors
0
09-02-2015 01:35 PM