Like the 390 the 401 s crankshaft and connecting rods are forged steel.
Amc 401 rods.
Connecting rods 390 and 401 rods 0 customer reviews submit a review 5 858 inch amc 390 and 401 4340 billet h beam connecting rod set with arp2000 bolts housing bore size 2 375 inch crank pin size 2 248 inch wrist pin size 1 000 inch bolt size 7 16 inch arp2000 weight 653 grams bronze bushed for use with floating pin.
All molnar rods are finished in the united states at the molnar technologies shop in michigan.
C c length of rod center to center in inches.
The 401 has 2 090 inch rod and 2 248 inch main journals which means you can swap the.
Like the 390 factory recommended overbore is only 0 020 in 0 51 mm but commonly bored by 0 030 in 0 76 mm.
The only other real difference inside the engine with the 401 as opposed to other engines in the lineup were the diameter of the bearing journals.
We have rods available for the amc 360 390 and 401 engines with stock stroke crankshafts and also special amc stroker rods 6 000 inch long for use with either a 2 000 inch or 2 100 inch crankshaft rod journal size as used on many amc stroker cranks.
K1 tech is producing an extremely strong 4340 billet rod set at a reasonable price for amc 360 390 401 and amc stroker engines.
Rod jrnl crankshaft rod journal diameter in inches.
Pin wrist pin size that rod is designed to work with.
The 70 tall deck amc 390 has a unique piston and rod combo that makes it different from the 68 69 variety.
Interestingly amc made the swap to use chrysler torqueflite transmissions after 1972 so the cranks are slightly different to accommodate that change.
The practical limit of the plebian amc 401 is about 500 hp at 7 500 rpm the main caps will begin to walk above that so limit these engines tohealthy street mills if you want to keep the price.
Amc 360 390 401 rods.
It should be noted that there was a one year only 1970 390ci third generation engine prior to the 401.
It was last produced in 1979.
The 401 was available in the javelin matador and ambassador car lines and in jeeps from its introduction in 1971 through 1974.
