Headers for angle plug heads
Thread Starter
6th Gear
Joined: Jun 2010
Posts: 6
Likes: 0
From: Oak Harbor WA
Headers for angle plug heads
I've got a stock ZZ4 that is going in my '78 so I need something that will fit the angle plug heads. I want quality and was looking at getting some coated Hookers through Jet Hot. Unfortunately, the Comp headers won't fit angle plugs. Super Comps will, but they have 1 3/4" tubes as opposed to the Comps' 1 5/8". It seems like it might be overkill to be running 1 3/4" tubes for a fairly mild 350. Thoughts? Will this have negative impact on performance?
Thread Starter
6th Gear
Joined: Jun 2010
Posts: 6
Likes: 0
From: Oak Harbor WA
How was the seal? What kind of gaskets did you use, and did you have any leak problems? Also, you replied in the past tense...how long did you run those headers?
Drifting
Joined: May 2005
Posts: 1,629
Likes: 4
From: Somers CT
I used the gaskets that came with them. Put a coat of grease on them and tightened the bolts...........never a leak.
Thread Starter
6th Gear
Joined: Jun 2010
Posts: 6
Likes: 0
From: Oak Harbor WA
Thanks for the info! One last question: As far as the install goes, any clearance issues (i.e. starter) or modifications you had to do to get them bolted on to your original ZZ4 heads?
Drifting
Joined: May 2005
Posts: 1,629
Likes: 4
From: Somers CT
No installation issues at all. I still have the heatshield on the starter, no modifications anywhere, these bolted right up.
Check the flanges carefully before you put them on, there were a couple of places with some weld spatter on mine, I just carefully ground it off.
Check the flanges carefully before you put them on, there were a couple of places with some weld spatter on mine, I just carefully ground it off.
Safety Car
Joined: May 2003
Posts: 3,814
Likes: 105
From: Dearborn Heights Michigan
FYI, ZZ4 has D shaped exhaust ports not square.
Hedman makes Headers with D ports for the ZZ4.
Have them on my ZZ4. I thought the ZZ4 had straight plugs, at least seems that way in looking at mine.
Hedman makes Headers with D ports for the ZZ4.
Have them on my ZZ4. I thought the ZZ4 had straight plugs, at least seems that way in looking at mine.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Race Director
Joined: Jun 2000
Posts: 10,040
Likes: 672
From: FL
ZZ4 heads have the L-98 angles. They are not the same as the old Chevrolet angled plug heads that Hooker is referring to. So, the Hookers may fit, especially with shorty plugs. Best thing to do is order them from a reputable dealer that will work with a return if they don't fit.
Last edited by SteveG75; Aug 26, 2010 at 08:16 PM.
