Been running a mini HEI from Langdon's for several years, works great. I take long trip, last fall the wife & I put about 1,200 miles on a trip up into BC Canada, runs like a champ.
http://www.langdonsstovebolt.com/store/online-catalog/#!/Stovebolt-Mini-HEI-for-GM-216-235-261-&-GMC/p/1222040/category=18665949

I run plug wire to fit a later Ford 300 L6 & platinum AC Delco #7 plugs (gm p/n: 19360569).

Last edited by BC59; 05/05/2020 8:02 PM.

BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022