I'm guessing - there's roughly a 15 lb. difference between
the 360 vs 401 crankshafts ?
I'm guessing - there's roughly a 15 lb. difference between
the 360 vs 401 crankshafts ?
304/360 crank weighs 53 pounds on a bathroom scale.
WOW! I wouldn't have guessed that..
"A man's got to know his limitation's"
Dirty Harry.
It makes sense seeing that the 304/360 cranks are cast and the 401 cranks are forged...
So.......... a 70 lbs. frontal weight savings running a 360 vs 401 -
as block is 60 lbs. lighter than a 401.
360 is good to 500HP / 401 good to 600HP.
360 is good to 500hp?... I suspect not for very long. Good $h!t though..
I'm shooting for somewhere near 500 HP with my current 360 build.
It is a 343 block .030 over with a 304/360 crank offset .010 to 3.46 Stroke.
Compression will be near 10.0:1 whereas before is was near 9.0:1
The motor made 425 HP before the CR bump and advancing the cam,
based on car weight and speed in the 1/4, 20% loss, and chassis dyno.
Time will tell what it actually makes and how long it lasts.
I can't remeber the formula that relates HP-RPM-Torque ?
to figure out how many lbs/ft at 5500 rpm yields 500 HP
Nice!
A 343 Weight for comparison against the 540lb. '78 360 ?
Horsepower = Torque x RPM / 5252
Looks like you'll need 477 lb/ft at 5500 to get 500 horsepower. Cant wait to see what you end up getting.
Originally Posted by Ghinmi
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