351M Question
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Junior User
Joined: Mar 2009
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From: Chesterfield
351M Question
I am about to rebuilt my 351M
I cant find any
aluminum cylinder heads for a 351M
I was told the 351C and 351M heads would fit
I found one set its about $1,835 and i don't wanna spend that kind of money can anyone help me find some that are a little bit cheaper?
I cant find any
aluminum cylinder heads for a 351M
I was told the 351C and 351M heads would fit
I found one set its about $1,835 and i don't wanna spend that kind of money can anyone help me find some that are a little bit cheaper?
Fleet Mechanic
Joined: Jun 2007
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From: Ohio
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Junior User
Joined: Mar 2009
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From: Chesterfield
i was looking for a little cheaper, i cant decide cast iron or aluminum? any advice? how can i decide? can i get the same out of the cast iron for cheaper (HP)? or are aluminum all around kick ***?
Posting Guru
Joined: Mar 2009
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From: Alston, MI
i dont know if this is true, but i'll say it anyway b/c it sounds logical. aluminum and cast iron expand and contract at different temps, so the intake gaskets tend to go out more on aluminum heads. i'd go w/the cast iron b/c i'm cheap like that, and i wouldnt wanna be tearing the engine down more than i have to.
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Junior User
Joined: Mar 2009
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From: Chesterfield
i dont know if this is true, but i'll say it anyway b/c it sounds logical. aluminum and cast iron expand and contract at different temps, so the intake gaskets tend to go out more on aluminum heads. i'd go w/the cast iron b/c i'm cheap like that, and i wouldnt wanna be tearing the engine down more than i have to.
Mountain Pass
Joined: Jan 2008
Posts: 211
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From: North West Arkansas
I'm no engine expert, but I would say that a GREAT set of heads will only get you so far if the rest of the motor isn't built to the same standards. If you've got an aggressive cam with some high compression pistons, then you should spend the money on a good set of heads. If your simply going to do a basic build up, I would suspect that iron heads with some attention would suit your purposes just fine. But that's just a SWAG.
There is my $.02, keep the change.
There is my $.02, keep the change.
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Junior User
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From: Chesterfield
I'm no engine expert, but I would say that a GREAT set of heads will only get you so far if the rest of the motor isn't built to the same standards. If you've got an aggressive cam with some high compression pistons, then you should spend the money on a good set of heads. If your simply going to do a basic build up, I would suspect that iron heads with some attention would suit your purposes just fine. But that's just a SWAG.
There is my $.02, keep the change.
There is my $.02, keep the change.
cam is .494
new crank (to make 351M a 400)
is that the basic build up?
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Mountain Pass
Joined: Jan 2008
Posts: 211
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From: North West Arkansas
I don't know enough about pistons or cam's to answer that question, but I would think that a stroker kit would be a pretty standard upgrade for the 351 M and it alone would not warrant a high dollar head.
Posting Guru
Joined: Mar 2009
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From: Alston, MI
keep the irons... they only weigh a little more than the aluminums... and the aluminums will only be a higher performance head if you order it w/larger ports, valves, and a smaller chambers than the originals.
i'd keep the original heads myself b/c they have a good flow
i'd keep the original heads myself b/c they have a good flow
Junior User
Joined: Jul 2007
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The best upgrade you can make for the money on your 351M rebuild is the following:
400 crank & 400 pistons
DEH-265 (or similar cam)
double roller timing chain installed with 0 advance/retard.
Aluminum intake
600-650 cfm carb.
This is not an expensive rebuild. You have to buy new pistons/rings/cam/timing chain anyway.
Stroking your 351M to a 400 will net you +/-350 hp with is twice the hp your 351M had in stock form.
Do the aluminum intake and carb later if money is tight. They a simple to replace.
400 crank & 400 pistons
DEH-265 (or similar cam)
double roller timing chain installed with 0 advance/retard.
Aluminum intake
600-650 cfm carb.
This is not an expensive rebuild. You have to buy new pistons/rings/cam/timing chain anyway.
Stroking your 351M to a 400 will net you +/-350 hp with is twice the hp your 351M had in stock form.
Do the aluminum intake and carb later if money is tight. They a simple to replace.
Thread Starter
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Junior User
Joined: Mar 2009
Posts: 60
Likes: 0
From: Chesterfield
The best upgrade you can make for the money on your 351M rebuild is the following:
400 crank & 400 pistons
DEH-265 (or similar cam)
double roller timing chain installed with 0 advance/retard.
Aluminum intake
600-650 cfm carb.
This is not an expensive rebuild. You have to buy new pistons/rings/cam/timing chain anyway.
Stroking your 351M to a 400 will net you +/-350 hp with is twice the hp your 351M had in stock form.
Do the aluminum intake and carb later if money is tight. They a simple to replace.
400 crank & 400 pistons
DEH-265 (or similar cam)
double roller timing chain installed with 0 advance/retard.
Aluminum intake
600-650 cfm carb.
This is not an expensive rebuild. You have to buy new pistons/rings/cam/timing chain anyway.
Stroking your 351M to a 400 will net you +/-350 hp with is twice the hp your 351M had in stock form.
Do the aluminum intake and carb later if money is tight. They a simple to replace.
what size cam is the DEH-265?
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Junior User
Joined: Mar 2009
Posts: 60
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From: Chesterfield
COMP Cams K32-221-3 - COMP Cams High Energy Cam and Lifter Kits
and how about this size cam what ya think bigger/smaller?
and how about this size cam what ya think bigger/smaller?