46 Studebaker M5
Last edited by Bowtie316; Jun 11, 2015 at 11:48 AM.
Here are some older pictures from when I was going to use a turbo 4.3.
Wrong wheels, but this will be near ride height.

C4 front suspension.

Old motor.
Last edited by Bowtie316; Feb 24, 2013 at 10:13 AM.
Very little progress, got mock up junk ls1 set in there, motor mounts made, starting on header build/modification. Started with ls1 block hugger headers. 1-5/8 primary tube, will be 3" collector.
The engine trans that will be going in this thing is now going to be a 5.3/4l60e from a 2000 silverado that I crashed a few months back. Eventually plan to build a 6.0 or larger N/A engine or supercharge the 5.3.

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Hooker collectors, 1-5/8 primary x 3" and 10" long. Part number 11522, these were $34 for the pair and worth every penny.

4 O2 sensor bungs and 2 plugs, 2 for PCM and 2 for wide band, also 2- 3" v-bands.

And the mocked up header prior to welding. The primary tubes will be cut at an angle before the collector so it will have a little better merge properties than just a square cut.
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I have another small update, just welding on the headers.
I don't have a lot of time on a tig welder, but they didn't turn out too bad.

This is what I was thinking of for a poor-mans merge. I would think this would be better than just an abrubt square cut. I have no way to test it, but I'm sure somebody will say its a bad idea. Oh well. Needs welded and blended but you get the point.
Figure I have close to 12 hours in the drivers side and 10 in the passenger side. 1-5/8" primaries, 3" collector. Do you think these hold me back from reaching 500 rwhp with a supercharged 5.3 or 5.7?

The gasket only hits about 1/2 of the sealing area.

Bought these off of ebay for $75. They fit the gaskets perfectly. 1/2" thick.



I should have the headers back from the ceramic coating later this week. Will post pictures then.
Honestly, I don't think these will really hold me back much. I read a header test Here that basically concluded that the 1-5/8 headers had the same basic output as the 1-3/4 and 1-7/8 within a few horsepower and torque. The 1-5/8 actually made 1 more ft lb at peak, but lost 6 hp at peak, averages were almost identical. This was on a 400 hp ls1, so the 6.0 I'm building will be different but I don't think it will matter too much.
Anyway, here is a picture with them back from powder... err ceramic coating.
Last edited by Bowtie316; May 9, 2013 at 02:22 PM.
Honestly, I don't think these will really hold me back much. I read a header test Here that basically concluded that the 1-5/8 headers had the same basic output as the 1-3/4 and 1-7/8 within a few horsepower and torque. The 1-5/8 actually made 1 more ft lb at peak, but lost 6 hp at peak, averages were almost identical. This was on a 400 hp ls1, so the 6.0 I'm building will be different but I don't think it will matter too much.
Anyway, here is a picture with them back from powder coating.






:ha il:
!!!!!!!! In the past when I did headers I always ran into that issue. I am trying to avoid it with my custom long tubes in my Bimmer project.
Thanks in advance for any advice
PS: well done solution:
Last edited by vazfx16; May 9, 2013 at 11:26 PM.





