Intake machine work

dave89iroc

dave89iroc

Club Member
anyone on here able to machine a LT1 intake for a older rear mount distributor(the hole and a threaded hole for the bolt)?

and a spacer will be needed for the hole as well, 1/4 tall on the high side, with a 5* taper on one end
 
dave89iroc said:
anyone on here able to machine a LT1 intake for a older rear mount distributor(the hole and a threaded hole for the bolt)?

and a spacer will be needed for the hole as well, 1/4 tall on the high side, with a 5* taper on one end
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Have you checked out lt1intake.com? Last time I looked it was about $220 shipped for a modified intake if you supplied the core.
 
beertestr said:
Have you checked out lt1intake.com? Last time I looked it was about $220 shipped for a modified intake if you supplied the core.
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actually, its $100 for the hole only,but theres been lots of bad reports of him lately, not sure if I trust the site, ever since it was sold a couple years back
 
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dave89iroc said:
actually, its $100 for the hole only,but theres been lots of bad reports of him lately, not sure if I turst the site, ever since it was sold a couple years back
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Shit, really? Was recently thinking about sending my LT1 intake to them, possibly want to run a dual-sync distributor and get rid of the opti. :(
 
Birdie2000 said:
Shit, really? Was recently thinking about sending my LT1 intake to them, possibly want to run a dual-sync distributor and get rid of the opti. :(
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my plan is to keep the opti for the pickup only, fill all the holes, and drop a dist. in for the high voltage , that way, I think i can eliminate the misfiring in my K5 when I hit water
 
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char said:
do you have a pic of what you need done, i have a full machine shop at my disposal
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I just came across one, let me find it again


pretty much, I need a hole(1.5" or so, will double check) drilled into the flat, open area at the rear of a intke, in the proper location (can locate off an intake that has the hole) to install a distributor, along with a hole tapped 3/8-16 near it for the hold down, and a spacer that also has the same size hole, that needs to have a 5 degree slant on 1 side, and .25" tall on the high side
 
heres a pic of one finished

newdist.jpg



I need to make sure that the end bolt holes are the close enough between this intake and an older SBC one i have, for locating the hole, if not, some measurements can be taken from a engine i have here, or the corners of the intake may work fine

in fact, I guess the holes don't need to be 100% exact, as the spacer can be made to cover a slightly oversize hole, and then be glued/welded in place, after the distributor is dropped in

but if you need to make a fixture or something, it looks like it might get you a litte more work, since there is me and him in this thread alone
 
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Have you looked at the LTCC or the DelTEQ conversions? I used to make coil mounting brackets for the LTCC setup.
 
beertestr said:
Have you looked at the LTCC or the DelTEQ conversions? I used to make coil mounting brackets for the LTCC setup.
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yeah, but don't want to spend that much money, all i will need to spend doing this is what it needs anyway(wires, intake gaskets) + the hole
 
Got any info on how to wire it? I'm thinking plug the Opti plug wire holes up real good, and run the coil wire to the dizzy? Anything else I am missing here?

Right now the opti takes the timing, sends it to the PCM, which sends the advance/retard info to the ignition module, which triggers the coil... then sends the high voltage back to the opti. You're just redirecting the path from the coil-opti to coil-dizzy..... si?
 
beertestr said:
Got any info on how to wire it? I'm thinking plug the Opti plug wire holes up real good, and run the coil wire to the dizzy? Anything else I am missing here?

Right now the opti takes the timing, sends it to the PCM, which sends the advance/retard info to the ignition module, which triggers the coil... then sends the high voltage back to the opti. You're just redirecting the path from the coil-opti to coil-dizzy..... si?
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thats the plan, I will set the engine to #1 TDC, drop the dist in with #1 at TDC and see how it runs


I might extend the coil/ICM primary wires and mount the coil/ICM towards the rear, but I may not(depends if it dislikes water, lol), it is not really needed, since it will only be about 1 1/2 feet run, plenty of engines mount the coil father from the dist. then that


oh, I might pull the rotor out though, but that will be if i ever pull the water pump, I figure I can fill all the plug wire holes in place







Char, any word?
 
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I just got my LT1 Caprice running, but it's about the 5th LT1 B-car I have had, and I have replaced 3 opti's over the years. I like the distributor approach, but access under the cowl on a Caprice is a pain, the Earlier TBI Caprices ran a distributor with a hole opening in the intake. It was done in order to give you more room to tilt the distributor and get it out from under the cowl..

I talked with Bob (LTCC guy) many times, and tried to trade him an LTCC setup for a couple sets of coil mounting brackets, but he never bit..

Oh well. If I need more spark with my motor, which is unlikely since it's a mild port with a HotCam setup I'll think about it more then. If I blow the motor, I am going LS2 anyway..

Good luck, post some pics and your impressions when you have it all set up..
 
pm me some quick sketchs of the part, im pretty sure its possible to do. i gotta check and see if we have a boring bar at work. to do the hole through the intake. big thing is i need to know exactly where you want everything.
 
char said:
pm me some quick sketchs of the part, im pretty sure its possible to do. i gotta check and see if we have a boring bar at work. to do the hole through the intake. big thing is i need to know exactly where you want everything.
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ok, I'll figure it all out and get back with you
 
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yeah thats fine, works pretty slow i dont see it pickin up for a bit.... gotta love the government jobs
 
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