Which header is better for a 383?
Thread Starter
Joined: Apr 2006
Posts: 1,534
Likes: 3
From: Jacksonville, NC
Car: 92 Camaro
Engine: Dart SHP 406 HSR, LE heads
Transmission: Performabuilt Level 2, Vig 3200
Axle/Gears: S60 373
Which header is better for a 383?
For my application, wanting to have 380-420 horsepower at the wheels....
I have been looking at doing the hedman $150 long tube 1 5/8's to true duals or 3.5" catback. I've heard about some people having the nightmares with longtube headers (not just hedman, hooker included) and I've heard everything from oh 350's need 1 3/4 header
even with long tubes. Now I am certain that i would defiantly benefit from long tubes, but would i benefit with Dyno Don 1 3/4 shorty headers to my two cats as much as 1 5/8 longtubes? I would like actual experiences please, not just "I believe"
I have been looking at doing the hedman $150 long tube 1 5/8's to true duals or 3.5" catback. I've heard about some people having the nightmares with longtube headers (not just hedman, hooker included) and I've heard everything from oh 350's need 1 3/4 header
even with long tubes. Now I am certain that i would defiantly benefit from long tubes, but would i benefit with Dyno Don 1 3/4 shorty headers to my two cats as much as 1 5/8 longtubes? I would like actual experiences please, not just "I believe" 
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Which header is better for a 383?
RWHP hmmm??? then i hope you'd just buy the hooker long tubes with dual 3" exhaust or a 4" mufflex.
Joined: Jan 2002
Posts: 3,449
Likes: 7
From: LONDON, KY
Car: Camaro
Engine: Carbed L98
Transmission: TH350
Axle/Gears: 3.73
Re: Which header is better for a 383?
I am running the AFR 190's and the exhaust ports just right for the 1 5/8 Hedmans.
I just check my AFR books and it calls for the felpro #1404 gasket for both the 190's and 195's. Have you done any port work on the exhaust?
I just check my AFR books and it calls for the felpro #1404 gasket for both the 190's and 195's. Have you done any port work on the exhaust?
Thread Starter
Joined: Apr 2006
Posts: 1,534
Likes: 3
From: Jacksonville, NC
Car: 92 Camaro
Engine: Dart SHP 406 HSR, LE heads
Transmission: Performabuilt Level 2, Vig 3200
Axle/Gears: S60 373
Re: Which header is better for a 383?
no porting
Thread Starter
Joined: Apr 2006
Posts: 1,534
Likes: 3
From: Jacksonville, NC
Car: 92 Camaro
Engine: Dart SHP 406 HSR, LE heads
Transmission: Performabuilt Level 2, Vig 3200
Axle/Gears: S60 373
Junior Member
iTrader: (2)
Joined: Nov 2002
Posts: 47
Likes: 0
From: Toronto, ON, Canada
Car: 1988 IROC-Z
Engine: Fast Burn 385 Crate Engine / Accel DFI
Transmission: T-56
Axle/Gears: 10 Bolt Auburn Pro / 4.10 Gears
Re: Which header is better for a 383?
Im currently running a fastburn 385 with some headwork, single plane EFI, comp xfi cam stock zz4 shortlblock 350ci making 390hp and 350ft/lbs to the wheel through SLP 1-3/4 Headers, 3" catback and factory SLP muffler. Peak power is 6500rpm peak torque 5000rpm. Made 400hp and 360ft/lbs with the dump open. Hope that helps you out.
Thread
Thread Starter
Forum
Replies
Last Post
Chad Speier
Engine/Drivetrain/Suspension Parts for Sale
3
Sep 24, 2015 12:32 PM
Andrew Prakash
TPI
2
Sep 8, 2015 11:48 AM
