Thread: LT intake manifold modification for distributor

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Well I have been rounding up components to modify some LT1/4 manifolds for a distributor in the normal location instead of the front mounted Opti-spark---I never had any problems with the optis (exept for the rpm limit) but I want to remove the opti from the front of my wife's 33 coupe for more front room for a low mounted alternator and I have 3 or 4 manifold around here so I'll just do the batch of them at the same time, polish/powder coat etc.

Will work on getting some pics of the process and progress-----------

yep i was asked to do one some time ago . should go good with the mill set up run them all threw the set up

Originally Posted by jerry clayton

Will work on getting some pics of the process and progress-----------

Thanks Jerry! I don't "play" with sbc so I'm curious as to what you're doing.. Haven't heard of this before now..

So help me out here, Jerry. The OptiSpark is shaft driven off of the front of the cam, with recessed holes that fit over the cam retaining bolts and a keyway slot that picks up the cam gear key for precise alignment, right? So you're swapping out the cam, using one from a non-92-96 SBC which has a distributor gear on the back of the cam, then machining an intake to accept a cam gear driven distributor? I'm not following how that's all going to work...

Roger----I know the distributor is on the wrong end of the engine for you-------

The cam has the gear on the back to drive the oil pump and uses a gear/shaft adapter thats in the same position as a normal sbc distributor--there just isn;t a hole in the manifold for it---got to machine away some egr bosses and fill and weld in a mounting hole for the dist shaft and holddown ---I will get a couple pics today--------

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been trying some photobucket and seems like its time to go get a beer or two

Originally Posted by jerry clayton

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been trying some photobucket and seems like its time to go get a beer or two

Jerry,
I think you're likely making it harder than needed. In photobucket open the folder/library where the pictures are that you want to post. There will be a bunch of them in small boxes, maybe 1.5" square, and each of those frames has an eight sided star in the upper right corner when your cursor is on that picture. Move your mouse over that "star" and a menu list drops down. Move your mouse within that box to "Get Links", and then from the links put the cursor on "Image Code" and click the mouse. You'll see "Copied" appear. That image is now on your clipboard.

In CHR, go to your new message, and in the text box simply right click, hit "Paste" and the image file is pasted into your message. You don't have to do anything else, other than add any descriptive text that you want, either above or below the image code that you see. For sure DO NOT click the "Insert Image" Icon, or you'll get extra crap that's not needed, and that will not work. Try that and see how it works.

[URL=http://s1292.photobucket.com/user/jerryclayton/media/008_zpsacfae25c.jpg.html][IMG]http://i1292.photobucket.com/albums/b568/jerryclayton/008_zpsacfae25

this is a view of the back ends of both types of manifolds and a oil pump drive gear for an LT1 and a distributor

compare the distributor and the LT oil pump drive gear



Back of the manifold with rough cut off of the egr stuff and view of the drilled pilot hole



with the drill poking thru





from the bottom side

View of drill guided thru bushings in oil pump housing and main cap

what the drive piece looks like and a view of the modified fixture one in position





and with the drill

Thanks Roger---I might get the hang of this bucket deal yet

To answer about just using a 92 block(pre LT1)---the LT engines have reverse cooling in where the coolant is pumped thru the heads first and then returns thru the block--they were able to run higher compression ratios and on about any gas you put in the tank all the time with good economy and broad torque/horsepower---
I never had any problems with the opti spark, I just want to move it so I can mount the alternator and A/C down low on the front of engine but the spark terminals of the opti are in the way----------------

Originally Posted by jerry clayton

Thanks Roger---I might get the hang of this bucket deal yet

You bet! And you can put up to 35 images in one post, spacing them as you wish with text in between the image files to tell the story. They work pretty neat!

Thanks for the pics and explanation Jerry! Looks like you're on your way with the photobucket deal... 8-)