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Search took 0.00 seconds. Search: Posts Made By: Purdy Swoft
Forum: Model A (1928-31) 12-08-2019, 12:16 PM
Replies: 20
Views: 3,591
Posted By Purdy Swoft
Re: High compression head vs cooling

Mine still has the model A cackle or chick ah lunk as I call it at idle. They might not idle exactly as slowly as original , but they idle pretty slow with the spark retarded .
Forum: Model A (1928-31) 12-07-2019, 09:57 PM
Replies: 20
Views: 3,591
Posted By Purdy Swoft
Re: High compression head vs cooling

My heads are all cast iron . I prefer cast iron for durability , A lot of people have been running the Thomas finned aluminum heads for years , the aluminum heads must be doing some good or people...
Forum: Model A (1928-31) 12-07-2019, 05:05 PM
Replies: 20
Views: 3,591
Posted By Purdy Swoft
Re: High compression head vs cooling

Besides the 5.9 head , I run the super street Winfield 3/4 race cam , lighter model B flywheel , dual updraft model B carburetors and a few other minor mods . My model A idles smoothly and has the...
Forum: Model A (1928-31) 12-07-2019, 10:43 AM
Replies: 20
Views: 3,591
Posted By Purdy Swoft
Re: High compression head vs cooling

I'm still running 5.9 compression heads on some of my model A's and they run cooler than original .
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