Pay Dues or become a Site Supporter |
#1
|
|||
|
|||
401 non-magnum
Hi, new guy; great forum! I have a 1966 1500 with a 351E. From reading the main site this would appear to basically be an M engine. I have a chance to buy a complete 401 non-M. As it was in a fire truck it has low miles and a bunch of accessories and pulleys, which is good as I want AC and PS. My question is if I put the 351E heads on the 401 won’t I basically have a 401M?
Thanks! |
#2
|
|||
|
|||
Re: 401 non-magnum
If you change to Magnum heads, you will also need the exhaust manifolds, because the exhaust ports are different. IIRC
Rod J Issaquah, WA |
#3
|
||||
|
||||
Re: 401 non-magnum
Hobbs:
I believe the answer to all of the above is "yes". Better make sure you can get Magnum gaskets for the swap. Magnum intake and exhaust gaskets are getting hard to find. Non Magnum are pretty readily available. Regards Steve New Orleans |
#4
|
||||
|
||||
Re: 401 non-magnum
im gonna be making my intake and exhaust gaskets for my 351E , it the head gaskets will be the hard part to find or make
|
#5
|
||||
|
||||
Re: 401 non-magnum
Hobbs:
I always figured if I needed head gaskets for my 351e, I would start with copper head gasket for 305 which is pretty readily available, then enlarge cylinder opening slightly for the difference in bore size. Hope that helps. Regards Steve |
#6
|
||||
|
||||
Re: 401 non-magnum
impossible to find! i even called fel pro , they gave me the finger! hahah im making my own
|
#7
|
||||
|
||||
Re: 401 non-magnum
Heads, exhaust and intake manifolds, bout it. Hey why not mill the intake and swap on a 4 barrel while you are at it? Food for thought.
__________________
"Excuse the rust I use my truck" 1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. 1964 Chevy C20 292/SM420 1966 Chevy C10 292 hotrod 6/TKO600 My youtube channel aka Military Chevy: To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. |
#8
|
|||
|
|||
Re: 401 non-magnum
Thanks for all the replies! I wanted to respond sooner but I had problems with my login. Guess it’s time to learn how to modify a head gasket...
|
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
401 Magnum Intake | Quigley | GMC V6 and V12 Engines | 3 | January 7th, 2018 04:38 PM |
401 magnum for sale | Archiver | Previous Forum Posts | 0 | September 28th, 2008 01:25 AM |
401 non magnum manifolds found! | Archiver | Previous Forum Posts | 0 | July 6th, 2006 09:00 AM |
401 Magnum for sale | Archiver | Previous Forum Posts | 0 | May 6th, 2006 01:12 AM |
For Sale: 401 Magnum in Bus | Archiver | Previous Forum Posts | 0 | May 6th, 2006 01:10 AM |