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Old March 29th, 2023, 02:21 AM
IdahoFarmboy IdahoFarmboy is offline
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Join Date: Mar 2023
Location: Princeton, Idaho
Truck: 401M in Hyster
Age: 50
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Default Re: 401M - HEI and Holley carb upgrade

Quote:
Originally Posted by BobBray View Post
Unfortunately the Stromberg WWC has a unique bolt pattern and the 1937 adapter will not work. Balkamp made a Stromberg to Holley adapter years ago, unless you find one you will have to fab one up. Since your 401 is in a forklift, I am not sure you would get much benefit from the Holley. Can your Stromberg be rebuilt? HEI would be a worthwhile modification, your 401 will run better and start easier.
We did a little measuring and checking specs on the 1937 adapter and they seem to match up. My Stromberg base measures 3 1/4" x 1 7/8" just as the specs for the 1937 adapter does and it doesn't appear to have any other conflicts. So I think I am going to cross my fingers and hope for the best and if all fails it looks fairly easy to build our own or modify this one. For the $25 at Summit Racing I think it might be worth the shot. I'll update the forum with what I find. Thanks
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