1971 400
Tuned
Joined: Jun 2001
Posts: 266
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1971 400
>I can get one for 400$ that runs.My question is "didn't
>1971 400s have a higher compression ratio than later years?"
Yes - highest in 1971
1971 9.0:1
1972 8.5:1
1973-79 8.0:1
But - if you ever need to replace pistons, most parts sources will try to sell you 8:1. Scan this board, but I seem to recall that Badger has some 400 pistons around 9:1.
>1971 400s have a higher compression ratio than later years?"
Yes - highest in 1971
1971 9.0:1
1972 8.5:1
1973-79 8.0:1
But - if you ever need to replace pistons, most parts sources will try to sell you 8:1. Scan this board, but I seem to recall that Badger has some 400 pistons around 9:1.
Junior User
Joined: Aug 2002
Posts: 68
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1971 400
Summit sells a complete rebuild kit for 1971-1979 400 with Speed Pro forged 8.33:1 pistons, rings, rod and main bearings, cam bearings, gaskets, freeeze plugs, plastigage, and assembly lube all for $389.95.
-Brad
1970 F-250 2wd 4sp. 360FE
1979 F-250 4x4 4sp. 400M
-Brad
1970 F-250 2wd 4sp. 360FE
1979 F-250 4x4 4sp. 400M
1971 400
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