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1970 454 + TriPower + HEI ?

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Old Feb 8, 2016 | 01:10 PM
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Default 1970 454 + TriPower + HEI ?
Anybody have this exact combo? Seems the washer pump cover might cause an issue?

http://www.ebay.com/itm/Corvette-Tac...p=mtr#shpCntId
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Old Feb 8, 2016 | 11:08 PM
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Sounds interesting.......
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Old Feb 8, 2016 | 11:41 PM
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had a 70 454/390 in the day I added 400hp tri to and it was nice but had stock ignition, no hei then. no interference issued anywhere.
Last edited by LT1driver; Feb 8, 2016 at 11:42 PM.
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Old Feb 8, 2016 | 11:52 PM
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68 435 here with tach drive HEI and no clearance problems. A bit tighter fit than an original distributor but definitely workable.
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Old Feb 9, 2016 | 06:17 AM
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I know you can't see it with the hood closed but the clear cap has never caught on for me.
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Old Feb 9, 2016 | 07:28 AM
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What about a small cap tach drive hei?

http://www.ebay.com/itm/Small-Cap-CH...VWTgRg&vxp=mtr
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Old Feb 9, 2016 | 08:44 AM
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Originally Posted by LT1driver
had a 70 454/390 in the day I added 400hp tri to and it was nice but had stock ignition, no hei then. no interference issued anywhere.
I already ran that configuration with no problems. I'm looking to "clean up" the engine bay by removing the coil & bracket & center wire.
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Old Feb 9, 2016 | 08:45 AM
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Originally Posted by 96 lt-4
I know you can't see it with the hood closed but the clear cap has never caught on for me.
Not concerned about cap color.... just fitment.
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Old Feb 9, 2016 | 08:48 AM
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Originally Posted by 1Fordman
68 435 here with tach drive HEI and no clearance problems. A bit tighter fit than an original distributor but definitely workable.
The 70 has a 5 port washer pump... and a pretty big pump cover. Can you please post a pic of the washer pump and HEI relationship ?
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Old Feb 9, 2016 | 08:50 AM
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Originally Posted by jim2527
What about a small cap tach drive hei?

http://www.ebay.com/itm/Small-Cap-CH...VWTgRg&vxp=mtr
Trying to eliminate the remote coil.
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Old Feb 9, 2016 | 09:27 AM
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I have the big cap HEI in my 72 and it clears everything on the firewall fine (wiper motor/washer pump).

You can just see everything in the engine bay pretty good at the beginning of my video.



Obviously, I don't have the 3X2 intake, so I don't know about the rear carb that would be in front of it... but 1Fordman says in post 4 that it worked on his....
Will
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Old Feb 9, 2016 | 10:57 AM
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I have the HEI w/tach drive on my 74 with the tri power. No interference.
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Old Feb 9, 2016 | 02:45 PM
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It clears the rear TriPower carb by a hair. I have a 87 Vette HEI distributor I'm detailing right now and I have the Tripower on the bench. It's the five port washer pump cover that's the question. I guess I'll just pull the distributor out of the 454 and drop in the 87 distributor to see. Thanks for all the replies. I'll be back shortly.

...It fits.

Edit:



Last edited by Tom454; Feb 10, 2016 at 03:49 AM.
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Old Feb 9, 2016 | 06:09 PM
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If you're trying to not have a coil and coil wire, why not a Vertex magneto?
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Old Feb 10, 2016 | 03:52 AM
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Originally Posted by 3X2
If you're trying to not have a coil and coil wire, why not a Vertex magneto?
Price and ease of access to replacement parts is a factor... but especially price. Those magneto's are too pricey for this project.
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