Setting an SBC Intake Down Straight - Team Camaro Tech
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post #1 of 9 (permalink) Old Jul 8th, 14, 12:31 AM Thread Starter
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Al
 
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Setting an SBC Intake Down Straight

I devised a way to set a gen one non-vortec SBC intake dead nuts perfect w/o sliding it around and screwing up the gaskets or the end sealant. Maybe someone else does it this way but I've never heard it before.

I recently switched from a Vortec style intake to the old style. I was spoiled by the vortec, because since the bolts are vertical vs angled toward each other, I'd just put a carb stud at each corner and set the intake on over the studs and everything was lined up perfectly.

I read on here recently the trick of using a 1 1/4" wood dowel down the distributor hole and guiding the intake over the dowel, so I tried a dry run on that - it gets you in the ballpark, but no better. It allows for being off to one side or the other, plus the hole in the intake is bigger than the hole in the block so you can be off front to back as well.

What I came up with is (are) 3/8-16 x 1/2" setscews, the kind that look like a stud but have an allen wrench (hex key) recess in one end. I threaded one at the front and one at the rear bolt holes on the left side only. Since the bolt holes angle toward each other you can only do one side or the other, but that's all you need. Left approx 3/16"-1/4" of the setscrew sticking out above the gasket surface. I stuck the intake gaskets to both heads using RTV around the water ports only, lined up exactly as I wanted them. Then threaded in the two setscrews on one side only. Did a dry run with no end sealant on yet - held the right side of the intake up about an inch above the head and maneuvered the left side so the bolt holes catch on the setscrews, then just set the right side down. Presto - all 12 bolt holes lined up perfectly.

Removed intake, put my favorite sealant on the china walls, and repeated. Threaded the 10 bolts into the holes w/o the setscrews, then removed the setscrews with an allen wrench and installed the remaining two bolts. Worked perfectly, thought I'd share.
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post #2 of 9 (permalink) Old Jul 8th, 14, 03:54 AM
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Tim
 
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Re: Setting an SBC Intake Down Straight

Sounds like a great idea Al, nice and straightforward! Going to try that myself when reassembling the engine

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post #3 of 9 (permalink) Old Jul 8th, 14, 05:12 AM
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Re: Setting an SBC Intake Down Straight

Great tip Al. Thank you.

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post #4 of 9 (permalink) Old Jul 8th, 14, 11:00 AM
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Re: Setting an SBC Intake Down Straight

So that's what I've been doing wrong for the last half century.

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post #5 of 9 (permalink) Old Jul 8th, 14, 06:25 PM
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Anne
 
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Re: Setting an SBC Intake Down Straight

Learn something new every day. Thanks !

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post #6 of 9 (permalink) Old Jul 8th, 14, 06:32 PM
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Re: Setting an SBC Intake Down Straight

Quote:
Originally Posted by ZLP955 View Post
Sounds like a great idea Al, nice and straightforward! Going to try that myself when reassembling the engine
Couldn't have said it better!! Intake is next in my build...Will be using this tip for sure. Thank you sir!!!...

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post #7 of 9 (permalink) Old Jul 8th, 14, 06:51 PM
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Re: Setting an SBC Intake Down Straight

Thanks for the great idea, Al. I am making a mental note for my next intake swap.

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post #8 of 9 (permalink) Old Jul 8th, 14, 06:54 PM Thread Starter
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Al
 
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Re: Setting an SBC Intake Down Straight

You guys are welcome. One other bit of advice - dry fit test everything first, just to make sure the bolt holes will line up with whatever intake gasket you choose. I needed a thinner gasket.


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post #9 of 9 (permalink) Old Jul 10th, 14, 08:58 AM
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Re: Setting an SBC Intake Down Straight

Great tip! It's funny how an intake will line up perfectly when you mock it up and then, once the RTV is on, it'll give you fits. : )
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