I glanced through and couldn't see any threads . was wanting to put an HEI in my 72 electra 455 . is this fairly straight forward like just changing the factory ignition out and dropping the HEI in ? new to Buicks and big blocks so thought id ask
The stock points distributor makes use of a resistance wire to drop running voltage to maximize point life. The GM HEI requires full time battery voltage. Fairly straight forward to replace the resistance wire. http://www.v8buick.com/index.php?th...ystem-function-tests-and-modification.248990/ The big cap GM HEI can have some interference problems with the intake manifold, upper radiator hose, and GS air cleaner snorkels. Nothing insurmountable. You can also install a points conversion kit. There are several out there. Less trouble IMO.
https://www.summitracing.com/parts/pnx-d350711/overview/year/1972/make/buick/model/electra this one looks smaller and may fit in there better ?
Read Larry’s timing thread no matter what distributor you choose. I’m running a Crane xr1(?) in my points unit; it’s easier and cheaper than a whole new unit. Used to be simple; just drop in a junkyard HEI and go, but they’ve all gone away now. Patrick
See Todd Miller here on the board to buy an OEM unit converted to electronic ignition or send him your stock unit if you don't feel comfortable doing the conversion yourself.
I converted an OEM one I had hanging around to Pertronix a few months ago and once it was timed, it ran perfect for me all summer. A lot of people on here don't care for that particular model but it's been fine for me.
been looking around and is this what you are talking about ? . seems reasonable and idiot proof which is mostly what I need . https://www.summitracing.com/parts/pnx-1181ls/applications/make/buick/model/electra/year/1972
Only thing with pertronix is they'e on version number 3. Reason for this is the first two versions had "issues". I've used and installed Pertronix and Lectric Limiteds version. I prefer the Lectric Limited brand. You can use ALL the factory wiring and for us "stock appearing " guys there are no extra wires like Pertronix requires. I've installed at least 50 of them and ZERO issues so far! .
I use the Lectric Limited version also. Bought it through Todd and like it alot. Very simple install.
I can't answer that as I haven't had any cars in the shop using one. I believe they'e good quality but a bit older technology?!
I am having ignition trouble with my 72 Rivièra. Replaced about all (coil, plugs, wires, points, condensator) but still a poor spark and poor starting and idling. Voltage on coil was within specs (5,5V points closed, 12,5V points open). So I am about done with it, I give up. Therefore I was looking at a HEI conversion also. Reading the info here I have a few questions: It is not recommended to slap in 'any' HEI, due to improper specs. I found one from Cardone https://www.summitracing.com/parts/aaz-84-1891 without any specs and one from TA Performance that should be specially tailored for the 455. http://www.taperformance.com/proddetail.asp?prod=TA_691B/C/R Could these be the same parts at different prices? And why does a HEI make 65,000 volts and a 'regular' performance coil only 40,000 volts? Should not be hard to make high voltage coils also.
Both of those listed would probably work fine but I believe both would require switching out your factory coil wire to a solid 12 volt wire. Not a big deal but..... The conversion kit I sell utilizes all the factory wiring so no modifications are needed. (AND LOOKS STOCK) The other two shown may interfere with a factory GS air cleaner on GS/ Skylark models. Your riv should be ok though. You could switch out your coil if you prefer but I believe a factory one works fine.
