Convert LS headers to Gen V?
Thread Starter
Teching In
Joined: Dec 2019
Posts: 5
Likes: 4
Convert LS headers to Gen V? Hi there, I'm getting ready to install an L83/T56 in a 280z. I am curious if anyone has converted LS headers to fit a Gen V engine? From dimensions I found online it looks to me that the tubes are in the same location, just a different bolt pattern. Is this correct? If so, would it make sense to buy LS headers and swap the flange?
On The Tree
Joined: Jun 2013
Posts: 112
Likes: 8
If you're looking for some tight hugging headers I bought these ones for my Defender 110 swap:
https://www.ebay.com/itm/Speed-Engin...72.m2749.l2649
Sean
https://www.ebay.com/itm/Speed-Engin...72.m2749.l2649
Sean
11 Second Club
Joined: Jan 2003
Posts: 1,000
Likes: 134
If the ports are the exact same spacing, an easy way would be buy some gen 5 header flanges, drill/tap them to suit the gen 3/4 headers so your headers can bolt into the gen 5 flange with short bolts. And clearance header flanges where necessary so the gen 5 bolts are able to wind into heads. Sandwich the gen 5 flange between the head and your gen 3/4 headers and run 2 header gaskets each side. That's If your car has the room to add an extra flange thickness to the headers and the headers won't hit anything in the chassis.
Bit hard to explain in words. a diagram would be easier
Bit hard to explain in words. a diagram would be easier
Teching In
Joined: Nov 2017
Posts: 2
Likes: 0
Short answer is no. I tried. $1000 in headers taught me the flange angles are different. Ports are spaced the same. I hoped to redrill flanges to work with OTS LS long tubes but the lower portions were contacting the block in my case where the engine mounts go. Custom fab was my only option, atypical swap limited my choices
Thread Starter
Teching In
Joined: Dec 2019
Posts: 5
Likes: 4
I eventually ran across a thread mentioning the same thing. I ended up modifying some gen V headers for my application. I supposed an adapter plate might still be able to correct for the angle though? Or welding gen V flanges on at a different angle.
Teching In
Joined: Aug 2013
Posts: 20
Likes: 3
From: Dallas/NWA
I found these shorty headers that hug very close to the block . I posted pics in my earlier reply but for some reason my post with pics get flagged for mod approval .
https://engineswapsupply.com/collect...shorty-headers
https://engineswapsupply.com/collect...shorty-headers
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TECH Senior Member
Joined: Jul 2009
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I realize this is a older thread, but those headers are 1 5/8” primaries.
FWIW...... Richard Holdener did a dyno run with a L83 and it showed no difference with headers vs. manifolds. This is one dyno flog that shown headers didn’t yield a gain like typical LS I’d try manifolds.
FWIW...... Richard Holdener did a dyno run with a L83 and it showed no difference with headers vs. manifolds. This is one dyno flog that shown headers didn’t yield a gain like typical LS I’d try manifolds.