L31 Extreme Budget Build

[Orpedcrow]

possible even in the process of being discontinued.

Mine was marked down to $84 when the machine shop ordered it.

 

[L31MaxExpress]

About to do a running valve adjustment on this.
185-195 psi in every hole, 5 of them are dead on 190 psi. Running valve adjustment might even them out even more. 1 & 8 are 195, 2, 3, 4, 5, and 7 are 190 psi. 6 is 185 psi. RH bank has a funny sound to the exhaust note, probably an exhaust rocker that is a bit too tight on #6.

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[L31MaxExpress]

I made a brief video on correctly testing the cranking compression. See this done wrong so often, skewing the results.

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[rebelyell]

Mine was marked down to $84 when the machine shop ordered it.

Hi:
And about when did you order that ?

 

[Orpedcrow]

Hi:
And about when did you order that ?

It would have been about June or July last year. From gmpartsdirect.com. They are currently showing unavailable

 

[L31MaxExpress]

145a AD244 wired up and charging good. Dropped to 13.9 when it heated up.

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[L31MaxExpress]

I posted this on another thread, but just felt like adding it here so it is all together with this build. Hopefully it all shows up before I go out of town this weekend for all of next week and I can start mocking it all up into place. Building a dual 4" ram air/cold air intake off the core support to feed the old L31 the air it needs. A pair of large ~9" x 4.5" scoops mounted vertically on each side of the condenser should help ram air that hits the core support into the 4" ducts at highway speed. I have read a few reviews on the newer stuff as I found nothing on this part number review wise, that the air filter housing does not seal at the bottom but some aluminum faced high heat duct tape will easily fix that if it is true. I am glad I was able to find this filter assembly new though, since Spectre has discontinued it and the scoops on the newer setup are at a 120* angle and look like they would hit the accessories and oil fill tubes, where the 180* should clear fine.

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[Moofus02]

Nice I think the old 440 cop cars had big duel inlet assemblies but I don't think they were 180 degrees like that

 

[L31MaxExpress]

A little test on the ram air system. The filter was installed in the housing.

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[454cid]

A little test on the ram air system. The filter was installed in the housing.

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I wonder how much the tube will cut down on the flow. There will be some resistance there.