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4.0 Head on a 232 |
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1968AMC770Wagon
AMC Addicted Joined: Jan/09/2009 Location: CT Status: Offline Points: 1137 |
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Posted: May/07/2009 at 1:56pm |
Will a 4.0 head work on a 232? I know alot of guys put 4.0's on their 258 and the 232 is basically the same block.
Thanks,
Zach
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Thikstik
AMC Addicted Joined: Mar/20/2008 Location: Alabama Status: Offline Points: 1327 |
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Man i wish Farna, etc would answer this because i dont know. It will make less compression due to less cubes , but i dont think that is a deal breaker. I say yes, but would like others to chime in. Of course there is a thousand things to know of manifold changes.,etc for a left side starter 1968 unit. Farna has listed all of them.
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75 gremlin x, jeep 4.0 headed 258,
264H Cliff cam, intake,header. 390 holley. I want a 282 VAM motor! AC/PS/PDB. 72 AMX , 304 2bbl, 3speed, now disks...probably will sell, want an automatic /AC. |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Not so sure it would be worth it on that low cube engine..... if there's enough to gain for all the effort it would take The 232 is not the same as the later 258's in several ways.
Pretty sure you'll have exhaust manifold issues with a left-mounted starter.
The 232 having a shaft rocker will have oiling issues. The 4.0 oils via the push rods - up the center from the lifters. The shaft-style rocker oils up through number 3 cam bearing up to the rocker shaft.
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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I think chamber size of the 232 was the same as the 258.
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Gremlinamc1975
AMC Nut Joined: Feb/27/2009 Location: Silsbee, Texas Status: Offline Points: 320 |
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wasnt the starter only on the left side in 72 and older for the 232? i remmeber my started being on the right hand side in my 75
Edited by Gremlinamc1975 - May/21/2009 at 10:23pm |
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1970 Gremlin 232, 1974 Gremlin, 1977 Gremlin X, 1977 Gremlin X, 1979 Spirit DL, |
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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Should be the same as the intro to torqueflite so 72 and newer would be a rh starter. |
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Peter Marano
Supporter of TheAMCForum Joined: Jul/01/2007 Location: Kenosha WI Status: Offline Points: 1650 |
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I think the proper question is 'How well will a 4.0 head work on a 232?'. Probably not well enough for the amount of work you will do. |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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That's what I was thinking and couldn't come up with the words.
Well said, Peter.
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1968AMC770Wagon
AMC Addicted Joined: Jan/09/2009 Location: CT Status: Offline Points: 1137 |
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Thanks for all the help. I had computer issues so I couldn't get on. I decided against the 4.0 head. As you guys have said, way too much work for the little gain i would get.
Zach |
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nosigma
AMC Apprentice Joined: Dec/30/2007 Location: McLean Va Status: Offline Points: 200 |
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I hate to get you all spun up on this again but I think you would see a rather large increase in HP if put the 4.0 head on the 232 block. If you look at the flow bench results (see sticky at the top of this page) the 4.0 head flows at least 25% better on the intake andd exhuast side stock. If you do a mild clean up of the bowls and throats you will get about 30% more flow.
The increase in flow is fairly proportional with HP. The head you have is an open chamber head with a lousy flame spread, no quench and no swirl. The 4.0 HO has quench, swirl and a better flame pattern. This will only add to the hp increase.
If you go to the 4.0 HO head just make sure you get pushrods that oil through the center and lifters to match.
John
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