351c
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351c
Hey guys just a quick question. Whats the gonig rate for a 351C needing to be rebuilt? It would come with headers, an aluminum intake, and glass packs. Just curious. I have a 302 in my truck right now but I got this motor with all this stuff and just thought i would ask the pros and cons with this motor vs. my 302. Thanks in advance
Laughing Gas
Joined: Jan 2006
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From: New-brunswick,Canada
it's hard to say but you can had up a transmission to your budget.351 cleveland it's a differently motor and i'm talking about big horspower diffenrence.Depending for what used.4 X 4 mud racing,street rod,occassional driver,daily driver,1/4 mile,show...
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From: Delaware
You need to find out what version 351C they have.
Is it a 2V motor with a 4V carb?
Or is it a 4V motor?
If it's a 4V motor does it have open chamber or closed chamber heads?
Then you need to tell us what you intend to do with your truck, as Mustang81 asked.
Is it a 2V motor with a 4V carb?
Or is it a 4V motor?
If it's a 4V motor does it have open chamber or closed chamber heads?
Then you need to tell us what you intend to do with your truck, as Mustang81 asked.
Laughing Gas
Joined: Jan 2006
Posts: 883
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From: New-brunswick,Canada
2v head are good for the street,big torque at low rpm.4v head good horspower but at high rpm.I have a street and strip.For me i'll go with aussie head.It's a hybride between 4v and 2v.close chamber for high compression (4v head)and small ports for a better torque(breathing) at low rpm(2v head)
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What are the tell tale signs for what im looking for I'm not very knowledgable with motors so im not shure what to look for. Also I believe the heads have been taken apart. I noticed the roller rockers are missing. I do know that the motor was originally pulled out of a late 60's early 70's model mustang fastback but thats all i know about it. But thats about all i know right now. Are there any paticular books that would be a great help to me if i decide to rebuild it myself? All im looking at doing with this truck is fixin it up and make a street truck out of it. I bought this truck when i was 15 years old and was the second owner of the truck.
Last edited by skymonkey; Apr 6, 2007 at 05:02 PM. Reason: missed some info
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From: Delaware
Get a copy of 'How to Rebuild Ford V8 Engines. by Tom Monroe. It should be available from Amazon.com and elsewhere.
351C 4V heads have a '4' embossed in one corner of each head. There should also be a casting # on the underneath side of the exhaust ports. A head from a early '70s Mustang will have a casting # like D0ZE or D1ZE. The 2V heads will have '2' embossed in one corner of each head. The 2V heads will be open chamber (dome shaped combustion chamber), while the 4V heads can be open chamber or closed chamber. Closed chamber heads have a wedge shaped combustion chamber.
If you can't figure out what kind of heads you have take some photos and post them. Also get the whole # under the exhaust ports. It will be D0ZE XXX. The three x digits will help describe the type of head.
351C 4V heads have a '4' embossed in one corner of each head. There should also be a casting # on the underneath side of the exhaust ports. A head from a early '70s Mustang will have a casting # like D0ZE or D1ZE. The 2V heads will have '2' embossed in one corner of each head. The 2V heads will be open chamber (dome shaped combustion chamber), while the 4V heads can be open chamber or closed chamber. Closed chamber heads have a wedge shaped combustion chamber.
If you can't figure out what kind of heads you have take some photos and post them. Also get the whole # under the exhaust ports. It will be D0ZE XXX. The three x digits will help describe the type of head.
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Both heads have a 4 in two corners. I did see that both had the D1ZE but they both had diff 3 idgits but not shure im looking in the right places. One was 1DA the other was 4DA does this sound right?
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Postmaster
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From: Delaware
Those are probably 1971 Mustang 351C-4V open chamber heads. The 4DA may be a replacement head, while the 1DA is an original.
The closed chamber heads are the better heads. The closed chamber heads offer higher compression ratios and 'quench'. The open chamber heads are lower compression and without quench.
That motor is nothing speciial. The core might be worth $100.00. You can add a couple of hundred for the Intake manifold and Headers.
If built right it will produce a lot more power than a 302, but so will a lot of other motors.
The advantages are that it comes with a 4V intake and headers, also it will mate to your transmission. It should be a drop-in replacement for a 302.
The closed chamber heads are the better heads. The closed chamber heads offer higher compression ratios and 'quench'. The open chamber heads are lower compression and without quench.
That motor is nothing speciial. The core might be worth $100.00. You can add a couple of hundred for the Intake manifold and Headers.
If built right it will produce a lot more power than a 302, but so will a lot of other motors.
The advantages are that it comes with a 4V intake and headers, also it will mate to your transmission. It should be a drop-in replacement for a 302.
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From: Jacksonville
I have a quick question, I hava an original pamplet from ford ( the cover had to be taped back on) that states the points setting for a 70-71 351c is 0.017 and for a 72 it is 0.021". Is there a difference in the engines that might account for thios change in setting? I have tried both and cannot se or feel any difference myself. Is there an advantage to setting them at either setting?
Thanks
Thanks
Postmaster
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From: Delaware
The closer the point gap, the more time is available for the coil to charge. Until coil saturation ocurs the longer charging time means more energy is available for the spark.
The '72 351Cs had lower compression and don't need as much spark energy for ignition. There is probably a corresponding change in the plug gap.
In a well tuned motor, ignition will occur with either setting. there should not be any detectable difference. Changing the point gap will alter the timing and it should be reset after a point gap change.
The '72 351Cs had lower compression and don't need as much spark energy for ignition. There is probably a corresponding change in the plug gap.
In a well tuned motor, ignition will occur with either setting. there should not be any detectable difference. Changing the point gap will alter the timing and it should be reset after a point gap change.
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From: Jacksonville
Maybe the duraspark but not the Petronix, at least not the petronix II. (Read this thread ) https://www.ford-trucks.com/forums/5...t-in-gear.html
I have had nothing but trouble out of the Pet II. I have thought about the MSD due to the duraspark seems to big to fit on my clev becuase of the water neck beside the dizzy. Pehaps I will go back to the PEtronix I, I just have not decided as of yet. Any suggestions?
Thanks
I have had nothing but trouble out of the Pet II. I have thought about the MSD due to the duraspark seems to big to fit on my clev becuase of the water neck beside the dizzy. Pehaps I will go back to the PEtronix I, I just have not decided as of yet. Any suggestions?
Thanks