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351C 4V build up

May 14 2008 at 2:47 AM
  (Login speedy18)
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from IP address 82.92.18.234

Hi you all, I'm new here from the Netherlands.

I have a 1967 Ford Mustang with a 351C 4V engine.

I want to build up my engine new, and I have 2 Edelbrock RPM Performer cylinder heads laying around here. I want to use these cylinder heads, but I'm not sure if I can use these heads in combination with my pistons. I have the TRW L2348 pistons in my block with some small domes on it.

Does anyone from you have experience with these pistons in combination with the edelbrock cylinder heads?

Thanks,
Roel

 
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AuthorReply
J. E. Thatcher
(Login jethat)
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71.199.27.24

I think I'd stick with the stock 4v's

May 14 2008, 12:50 PM 

I don't think the ED heads are an upgrade at least not from what I've read... They haven't reviewed well.

 
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clevelandstyle
(Login clevelandstyle)
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71.244.247.234

I agree

May 14 2008, 4:53 PM 

Stick with the iron 4Vs. It's a better head that Edelbrock.

 
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(Login machstang70)
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24.125.186.140

Re: I agree

May 14 2008, 7:24 PM 

Sell the Edelebrock heads and put the money into a mild port job (or clean up). Maybe some valve train upgrades.A cam upgrade?

 
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(Login methylated)
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4.88.154.39

stick with 4v

May 14 2008, 8:10 PM 

knock the ridges outta the throat and keep the diameter of the throat as small as you can 1.875 is usually about as small as you can go and still get it cleaned up . they are about 1.75 stock so it's not a big smoking deal as to where it will peak and the flow will jump way up from .3 on up to .7 or so.

It can all be done with a stone if you're uncomfortable with carbide.

 
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Roel
(Login speedy18)
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82.92.18.234

351C 4V build up

May 15 2008, 6:41 AM 

So nobody here knows anything about the combination from using the ED cylinder heads with 60cc chambers in combination with my TRW L2348 pistons.

I know people talk bad about these ED heads, but I have a pair new heads laying around there, and I just want to use them for my spare engine. I have a 4 bolt Cleveland with 1971 CC heads in my Mustang now, and I found another 4 bolt block, so because I have those ED heads laying around there I would use them for this engine. The engine has a 030 overbore, and both engines are stock stroked.

Thanks,
Roel

 
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(Login Falcon67)
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65.182.95.67

Use the heads

May 15 2008, 7:25 AM 

But change the pistons. The Eds are pretty much designed to work with a flat top piston. From what little I know about the Ed heads, I can bet that the chamber has about zero relationship to a stock 4V chamber. The target market is a stock 351C 2V engine, 351M and 400s, all of which will have flat or dished (mostly dished) piston tops. Any domed piston for a 351C would need a lot of dome rework or maybe have it shaved off flat. Might as well sell those to someone that could use them as is and get a set you can run with the heads. Cheaper to change pistons than heads.

Note - even with flat tops and a zero deck, you are still looking at 11.2:1 compression on a 351C with a 60cc head. Cam accordingly or look for a dished piston of some kind.

1967 Falcon 4 door 351C-4V
1970 Mustang 351C-2V
http://raceabilene.com/kelly/hotrod
Owner built, owner abused.


    
This message has been edited by Falcon67 from IP address 65.182.95.67 on May 15, 2008 7:29 AM


 
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Jim
(Login jcmeyer5)
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69.246.239.95

Re: Use the heads

May 18 2008, 6:13 PM 

Funny... I've taken apart 2v motors in the last week, and all of them were flat tops... luck of the draw?

 
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capri351
(Login capri351)
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re: 351C 4V build up

May 18 2008, 9:17 AM 

No experience with this head, and i not know if chamber is compatible with this domed piston !
But 60cm3 head with TRW2348 do >12:1CR ; i think standard octane fuel not go well (pinging problem).

 
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tinman
(Login tinman351)
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99.142.51.150

L2348 dome volume?

May 18 2008, 9:37 AM 

i looked some but didn't find it

how bout using the Ebrock heads and the pistons(if the dome works with the chamber)?

destroke using a 302C crank and appropriate rods and the CR might be usable?

if the domes aren't quite right they could be whittled away to work... and make the CR better too

"Enlightened statesmen will not always be at the helm" ~ James Madison

 
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(Login fordracer2001)
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65.13.114.95

Re: L2348 dome volume?

May 18 2008, 8:36 PM 

Old TRW book showed them as 12 cc dome

 
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capri351
(Login capri351)
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TRW2348 dome

May 22 2008, 1:40 PM 

Yes, 12cm3.
But this dome is not fill, no work possible.

 
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