AMC 304 vs 360 vs 401 - Differences? -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep CJ Forum > AMC 304 vs 360 vs 401 - Differences?

NEW JK WRANGLER GRAB BARS NOW at ROCKRIDGE4WDUSA Standard Chromoly Front Axle Shaft Kits with Dana 30 4Rugged Ridge Modular XHD Snorkel Now for both 3.8L and 3.6

Unread 08-29-2011, 08:31 AM   #1
Registered User
1983 CJ7 
Join Date: May 2008
Location: Alexandria, VA
Posts: 571
AMC 304 vs 360 vs 401 - Differences?

So as I understand it all three of these engines are based on the same block and share many parts (i.e. alt, intake manifold, exhaust manifolds, PS, etc.).

So what makes them different? Bore and stroke? Heads? Could you bore and stroke a 304, put bigger heads on it and turn it into a 401?

'80 CJ7 - Gone but not forgotten
'83 CJ7 - Donkey
Erik719 is offline   Reply With Quote
Unread 08-29-2011, 09:16 AM   #2
Registered User
1982 CJ7 
Join Date: Feb 2010
Location: FL.
Posts: 362
All Gen 3 engines are the same basic design and external dimensions but different CASTINGS with different internal dimensions and wall thickness as well as different cranks and rods (390+401 were forged)
This link will tell you all the basics.............OCG
Oldcraneguy is offline   Reply With Quote
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.