Big Block Chevy Headers

[soggy bottom]

Hi who could fabricate Big Block Chevy headers for a MK5 build.

Thanks

[tonywy]

Can't answer that question but, it's great to see someone putting a big block in one of these. Big block Ford in my car, tons of giggles.

[GoDadGo]

Hello Fellow Dark Sider!

If you don't already have your engine and transmission, I'd highly recommend going with a driveline that Factory-5 supports like the LS, SBF or Coyote.
You're going to be required to figure out your engine mounting situation and headers so try to find a header that put the outlets near the side pipe holes.
Your best bet may bet MAY be to to purchase a set of shorty headers that fit a C1, C2 or C3 Corvette or Block Hugger Headers and then fabricated J-Pipes.

C1/C2/C3 Big Block Header
https://sandersonheaders.com/product/bb5-header-set-big-block-chevy-corvette/

Block Hugger Big Block Header
https://www.speedwaymotors.com/Big-Block-Chevy-Block-Hugger-Tight-Fit-Headers-Raw-Finish,3817.html

Tru-Ram Stainless Manifolds
https://www.speedwaymotors.com/Tru-Ram-Big-Block-Chevy-Exhaust-Manifolds-Polished,53716.html

As for me I did a SBC in a MK-4 and located the engine and transmission in the bare frame using a set of Schoenfeld IMSA Modified Headers which was Part #161-33.
Using these headers, that were designed to come straight out of the chassis (90 degree angle from the block) made my installation rather easy compared to a BBC.
I simply marked the side pipe exit locations on the frame rails with BLUE PAINTERS TAPE and set the Engine & Trans on a piece of 3/8" plywood to get height right.

Redbone's Update Video From May 2024:
https://youtu.be/iwslgKJUaKc

Good Luck From The Dark Side!

[Mike.Bray]

Years ago I built a Cobra from a kit, Component Craft, and installed a SBC. Of course nothing was available for that engine so I ended up fabricating the headers using purchased flanges, U-Bends, a band saw, and a TIG welder. They actually weren't that difficult to fab, just mock the sidepipe in position and fill in the gaps. If Gas-N can't do them this might be an option for you.

[soggy bottom]

I know shell valley have some,
https://www.shellvalley.com/index.cfm?ptype=results_w&mode=cart_list

Getting one of those plastic mock up blocks I am sure would help in positioning the block amoug other things.

The big block is actually a 632 CI

[GoDadGo]

Looks like you just need to Whack-Da-Motor-Mounts and move the engine and transmission forward like I did and buy Shell Valley's BBC Headers.

The links below are the mounts I used when I built The Redbone Roadster:

https://www.speedwaymotors.com/Speedway-Universal-Weld-On-GM-Engine-Motor-Mounts,1905.html

https://www.speedwaymotors.com/Prothane-7-504-BL-Polyurethane-S-B-or-B-B-Chevy-Motor-Mounts,5527.html

You can see how things are laid out in my MK-4 and I'd bet that it should be just as easy to do on the MK-5 platform.

https://youtu.be/_wnHDNgnNqs

https://youtu.be/iwslgKJUaKc

Good Luck & Happy Welding!