| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,016 Posts1,055,337 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | 
#48909 08/11/2005 10:15 PM | Joined: Jun 2005 Posts: 887 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 887 | There is an HEI set up on EBAY which states:
YOU ARE BIDDING ON AN H.E.I. DISTRIBUTOR NUMBER 1110715 FROM A '79 CHEVY 250 SIX INLINE SIX. IT IS IN VERY NICE, COMPLETE CONDITION. THE CENTRIFUGAL ADVANCE IS NOT WORN OUT OR SLOPPY, AND THE VACUUM ADVANCE WORKS FINE. IT'S EASY TO PUT ONE OF THESE IN A 1937-62 CHEVY OR 1939-59 GMC SIX; JUST GRIND OR MACHINE OFF THE LOCATING COLLAR ON THE ALUMINUM HOUSING AND USE A STOCK CLAMP-ON LOCKING DEVICE FROM A STOCK 216-235 DISTRIBUTOR.
Is that all thats required to convert this fairly common boneyard part to make a 235/261 run better and get better gas mileage?
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
| | |
#48910 08/11/2005 10:25 PM | Joined: Jan 2005 Posts: 62 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2005 Posts: 62 | I think that you will also need to shorten the shaft; I think that is what I did. I don't know that my milage improved but it did really put more pep in my 261. Try doing a search and go back far. There have been some posts about this that are really helpful. This is a mod. that is worth doing if you are not worried about staying stock. | | |
#48911 08/12/2005 1:10 AM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | Shaft is too long below the gear and needs cut. Also, a hei out of any gm straight six, except the new 4200, will work with the modification. I would check the local yards, around here you can buy them for $40-65. Core charge for a rebuild is $30. Giving you some info to go by.
Fred
52 3600
69 C-10
| | |
#48912 08/12/2005 3:42 AM | Joined: Jun 2005 Posts: 221 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2005 Posts: 221 | They made 2 types one with external coil and one internal (in the cap )the external will last longer and give less trouble.Have you ever pulled the cap on a GM HEI and wondered where all the RED DUST came from? it is the result of the moving parts trying to sieze due to the electromagnetic field created by the internal coil.This info came from a mechanic at the local chevy dealer. | | |
|
|
| |
