Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 03-05-2002, 01:13 AM
chris115 chris115 is offline
Inactive User
 
Join Date: Mar 2002
Location: desoto MO
Age: 53
Posts: 42
Default small block heads

Does anyone know if 318 and 360 heads are interchangeable? I want to do a serious port job on my heads on my 360 but I dont want to have the truck down the whole time I'm waiting on the machine shop. I have a spare set of 318 heads and I was wondering if I could send those out to the machine shop and then just swap them out when I get them back.
Reply With Quote
  #2  
Old 03-05-2002, 05:08 AM
Fast One Fast One is offline
Inactive User
 
Join Date: Dec 2001
Location: Adelaide South Australia
Age: 66
Posts: 329
Default

You can use 318 heads on a 360 but if you're after some extra grunt I would advise against it, look at a set of 318 heads next to a set of 360 heads & you'll see why, there is quite a big difference between the 318 & 360 intake runner sizes.

I've ported plenty of 318 & 360 heads with flow testing.

A fairly major porting job I've done on some 318 heads netted 200 cfm @ .600 lift which equals about 411 HP of flow.

A standard 360 head flows about 196 cfm which is about 403 HP of flow, so for all the work you do on the 318 head it's barely doing better than the standard 360 head.

I would guesstimate that the 318 heads would run out of puff at about 4,500 - 5,000 rpm on a 360.
Reply With Quote
  #3  
Old 03-05-2002, 05:44 AM
chris115 chris115 is offline
Inactive User
 
Join Date: Mar 2002
Location: desoto MO
Age: 53
Posts: 42
Default thanks

Thanks for the input. This engne is in a 4x4 so I need maximum torque at low rpm. It sounds like 318 heads are bad idea all around. I will just have to let the truck set until the 360 heads come back from the shop and I can put them back on.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Small block heads Charger 69/72 Performance Talk 59 02-15-2008 03:37 PM
#302 Small Block Heads 440+6 Vintage MOPAR chat 5 06-20-2006 09:02 AM
#302 Small Block Heads 440+6 Parts Wanted 0 06-19-2006 02:45 PM
Tha best small Block Heads??? Purple69Charger Performance Talk 17 08-26-2004 11:28 AM
Small Block Heads usdart Rear Wheel Drive - Parts for Sale 0 06-09-2003 09:21 PM




All times are GMT -4. The time now is 01:30 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .