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10-08-2009, 01:37 AM
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#1 |
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Registered User
Join Date: Oct 2007
Location: Sammamish, WA
Posts: 2,115
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HEI dist in 4x4 72 Jimmy/Blazer
Can you install one without any clearance issues with the firewall?
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10-08-2009, 03:14 AM
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#2 |
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Account Suspended
Join Date: Jan 2009
Location: galt ca,
Posts: 749
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Re: HEI dist in 4x4 72 Jimmy/Blazer
yup
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10-08-2009, 05:36 AM
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#3 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Yeah,but she sure is tight,huh?No clearance problems,just very tucked in back there.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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10-08-2009, 10:50 AM
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#4 |
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Registered User
Join Date: Mar 2003
Location: Cheboygan, MI
Posts: 998
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Issues? Yes, it's tighter than hell. Had to build a special tool to get to one of my hold downs. Was it worth it? Hell yeah...
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Tony Johnson -- '71 Blazer w/L-31 Vortec 350, SM465, NP205, performer intake, edelbrock 1406, HEI, 4" lift, Boyd EFI tank, Vintage A/C My Blazer -- |
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10-08-2009, 01:02 PM
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#5 |
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Senior Member
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,768
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Re: HEI dist in 4x4 72 Jimmy/Blazer
I'm thinking BFH
 ...can you say 6 gallons of sh!t, in a 5 gallon bucket
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 10-08-2009 at 01:04 PM. |
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10-09-2009, 04:05 PM
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#6 |
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Registered User
Join Date: Nov 2008
Location: DFW, Tx
Posts: 39
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Re: HEI dist in 4x4 72 Jimmy/Blazer
I put summit part # 850001R in my 72 Jimmy, no clearance issues.
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10-10-2009, 09:20 PM
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#7 |
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Blazer Fanatic
Join Date: May 2009
Location: Sacramento, ca
Posts: 249
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Re: HEI dist in 4x4 72 Jimmy/Blazer
im in the process of installing HEI in my blazer as well, when i finish ill take some pics and show what it looks like and how long it took.
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1970 Chevy blazer 
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10-10-2009, 10:26 PM
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#8 |
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Old School, New Style
Join Date: Jun 2005
Location: Monroeville, Ohio
Posts: 790
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Mine has one and I didn't think it was to tight. Surely seen worse.
__________________
The Good: - 72 GMC Jimmy 4x4 - 307 cid / 350 th - 70 Chevy Suburban 1/2T 2wd - 454 cid /400 th - 96 Chevy Impala SS - mainly stock - 98 Chevy Tahoe LT 4x4 - all stock The Bad: - 86 Chevy Suburban 1/2T 4x4 - winter beater The Ugly: - 72 Chevy Suburban 1/2T 2wd - parts truck |
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10-11-2009, 10:47 PM
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#9 |
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Registered User
Join Date: Oct 2007
Location: Sammamish, WA
Posts: 2,115
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Thanks everyone for the responses. I just ordered new wiring harnesses for the HEi and for an in ternal voltage regulator alternator. I will start a build thread soon.
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10-12-2009, 12:55 PM
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#10 |
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Registered User
Join Date: Apr 2007
Location: Meridian, Idaho
Posts: 316
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Sorry not meaning to hi-jack....
On the topic of HEI conversion, what do you need to do with the plug gap if anything?
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71  Jimmy: D60/14BFF, 9"F/11"B Lift, 350-350-203-205, Crossover Hydro steering, Beadlocks, Tube stuff and the bottomless cooler
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10-12-2009, 12:58 PM
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#11 | |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,768
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
My fingers just slide behind the spark plug wires boots locking ring...finger measures 3/4 to 1 inch, if you take off the locking ring you might gain 1/4 to 1/2 inch, but Accel doesn't recommend it 
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 10-12-2009 at 01:14 PM. |
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10-12-2009, 01:06 PM
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#12 |
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Registered User
Join Date: Apr 2007
Location: Meridian, Idaho
Posts: 316
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Thank you.
Considering you would just buy all new plugs wires and HEI and do them together.... Is there a difference in just getting new stock plugs at .035 and opening them to .045, or find stock set maybe for some other year with the same thread and depth and the gap already at .045? Id love someone to post the AC/Delco part number to look for. Im currently adding a 65000k HEI and 10mm wires...plugs are last item. Is there any tricks to the install for all 3? Never done a points conversion before. I already changed out the ALT for a Internally regulated. Thanks
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71 Jimmy: D60/14BFF, 9"F/11"B Lift, 350-350-203-205, Crossover Hydro steering, Beadlocks, Tube stuff and the bottomless cooler
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10-12-2009, 01:20 PM
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#13 |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,768
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Mine were ordered as '74 corvette wires w/ramshorn manifolds from Accel...stock size wires are 7mm, but 8mm just go into the factory wire holders.
I may be reworking the lenght of the wires, just haven't got aroundtoit plugs would depend on how your engine is built and runs...hotter or colder spark, but basically stock
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 10-12-2009 at 01:23 PM. |
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10-12-2009, 11:45 PM
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#14 |
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Registered User
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,985
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Re: HEI dist in 4x4 72 Jimmy/Blazer
If my memory serves me, the stock plug for the 350 with HEI is a Delco R44TS.
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12-12-2009, 11:26 AM
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#15 | |
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Workin to live...
Join Date: Jun 2003
Location: Texas Hill Country
Posts: 261
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
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Jason |
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12-12-2009, 02:48 PM
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#16 |
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SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,038
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Re: HEI dist in 4x4 72 Jimmy/Blazer
I had one in my 69. It was tight but cleared the firewall by about 1/8 inch.
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
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12-12-2009, 04:28 PM
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#17 |
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Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: HEI dist in 4x4 72 Jimmy/Blazer
The AC plug R44TS is simply the small 5/8 plug with a taper seat and extended tip.
T=taper seat S=extended tip GM started using these plugs in both big block and small block chevrolets in 1971 and work in pretty much anything up through the late 80's with a cast iron head that doesn't require more reach. You can go as cold as 43's which is what I run in a couple of cars, but that heat range is getting harder to find. Seems the 44's are also getting scarce. You can go as high as 46's if you wish. Most parts stores want to sell you the 45's it seems. For stock or nearly stock engines and close to sea level, I'd shoot for the 44's and go from there. As far as the HEI's, they are a cheap alternative to electronic ignition. Very dependable. The downfall is the size for me. I never liked the bulkyness and the amount of crap you have to remove for a simple cap and rotor change. I'm an MSD person myself, used them for 20 years without a hickup. They can be made to look stock as well, if you are into the stealthy stuff.  But a good setup is 5 times the price unfortunately. |
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12-12-2009, 10:30 PM
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#18 |
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Registered User
Join Date: May 2007
Location: Marion, Mi.
Posts: 2,429
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Very interesting topic, as I am looking at upgrading on next rebuild. Currently running the point dist, and time for a change! What wiring changes have to be made?
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12-12-2009, 10:37 PM
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#19 |
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sharp as a marble
Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
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Re: HEI dist in 4x4 72 Jimmy/Blazer
My Blazer had an HEI in it when I bought it. I have a bunch of clearance??? Her is a poor pic of it. I think I can get my hand around it no problem. Oh yea, i used a set of Taylor wires that I cut to length. I ran the front two on both sides under the motor mount. ( like a Corvette with HEI ) I have done this a bunch of times with Rams horn manifolds. Looks good, and makes teh wire set look very neat.
Last edited by cparman; 12-12-2009 at 10:48 PM. |
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12-12-2009, 10:42 PM
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#20 |
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Registered User
Join Date: Dec 2002
Location: Northern Virginia
Posts: 1,268
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Re: HEI dist in 4x4 72 Jimmy/Blazer
mallory unilite is about same size as stock and uses the OE style wires
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12-13-2009, 12:23 PM
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#21 | |
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Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
GM used a resistance wire that ran from this bulkhead to the positive side of the coil. I have a stockpile of those factory connections used in that bulkhead. I simply remove that resistance wire from the bulkhead, and use another factory connector with a 10-12 gauge wire. And simply re-route that through the harness up to the positive side of the coil. Sometimes, depending on the car, I'll keep that resistance wire in the harness as well (connected to the bulkhead but hidden inside the harness) just in case I decide to switch back to points for any reason. Keeps everything neat and factory appearing. You don't have to worry about the other side of the bulkhead that runs to the fuse box and ignition switch. GM used all standard wire on that side. The resistance wire was only installed from the bulkhead to the coil. Keep in mind this is GM only. Other brands such as Chrysler used a simple resistor mounted on the firewall. Last edited by Firebirdjones; 12-13-2009 at 12:24 PM. |
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12-13-2009, 12:28 PM
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#22 | |
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Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
There are factory wire supports that mount to the block near the motor mount as well as on the rear of the block next to the transmission bellhousing that holds all the wires together. Last time I did this setup there were several restoration vendors that still sold these factory wire looms. Last edited by Firebirdjones; 12-13-2009 at 12:35 PM. |
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12-13-2009, 01:22 PM
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#23 | |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,768
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
J/K, nice attention to detail and workmanship, but I don't know why I have such little clearance
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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12-13-2009, 01:26 PM
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#24 | |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,768
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
Do you have any pics of removing the wires from the bulkhead connector, always wanted to know how to do that...special tools?
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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12-13-2009, 01:28 PM
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#25 | |
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SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,038
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Re: HEI dist in 4x4 72 Jimmy/Blazer
Quote:
__________________
bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
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