70 Mach I - newbie looking for 351c 2v power advice

Have a standard 351c 2v H code w/fmx tranny in nice running order. Looking to add a good amount HP and need some advice:

1. will be adding edelbrock performer intake 2750 (other suggestions welcome). I see that edelbrock has come out with another intake manifold for 351c 2v. Anyone used it yet?
2. need advice on carb manufacturer and cfm
3. exhaust (flowmaster, magnaflow, etc (which works best with what diameter??)
4. difference between x and h pipe? what would work best for my configuration?
5. Headers - anyone have some past experience that worked well for them?
6. heads - aussie???
7. Cam??
8. Any other suggestions welcome.

I want to get a list of items and begin working down the list over time. Appreciate your expert opinions on this matter.

I would go with a performer rpm manifold or a weiand x-celerator. As for the carb a 650 - 700 cfm holley should be ok. A 2.5 inch exaust with your favorite sounding muffler (it doesent make that big of a difference) with an x pipe for the most power. I dont have a cleveland motor, nor have I installed headers on one but my hedman long tubes have worked well on my 302. The aussie heads are a good way to raise compression and they have a better combustion chamber shape, If you get a pair I would suggest new more durable valves and some port work then bolting them on to your motor. As for a cam I suggest a comp cams magnum 270h or 280h for a nice powerful street motor with a nice idle. Remember that a roller cam is much better than flat tappet cam but they are much more expensive.

I am a Clevo freak. I have build "a few". Read the 335 Cleveland forum on net54 for all you'll ever want to know about Clevelands [img]/phpBB/images/smiles/icon_smile.gif[/img]
I agree with the Weiand X-Cellerator for 2V heads. Also the Edelbrock RPM is supposed to be a good intake - I just haven't tried one yet.
If you have 4v heads, there are many manifolds available. Reguardless of 2V or 4V, stay away from the Performer intake. They may work good on other engines but don't work well on Clevelands. Sure you will get some low end torque, but they fall on their face after 5500 rpm. Clevo's like to wind out. Performers won't let them wind out...
The Aussie heads are 2V heads but will take either 2V or 4V headers. That is a nice plus !
Hooker Super Comp headers number 6210 work very well. They are 4V headers but bolt up to Aussie heads,. Then later if you switch to 4V heads, you will already have the headers!
I had and liked the Comp 280H cam. But. For Clevo's especially, a custom ground cam to meet YOUR engine set up is best. A Cleveland is simply an entirely different animal than the the Windsor engines. What works for one, doesn't work for the other. Please read the 335 forum for awhile and you will learn a lot. There is an engine build section in there were guys list exactly what they have and how it works. All the testing has been done for you there. Mark Mckeown builds pro stock and other race engines, he reads the forum and will grind you a cam that WORKS ! The price isn't much more than the off the shelf cams. Most of those shelf cams are Chebby or Windsor orientated and don't work as well as a custom cam to meet you wants, needs and desires.
Here is the link http://www.network54.com/Forum/119419
you can read all you want but will need a free password to post questions. Great bunch of friendly, helpful guys. They welcome new menbers too !
Cheers.
Danford1
[img]/phpBB/images/smiles/icon_tup.gif[/img]

Hey, I'm 16 and have been looking up ways to modify my Cleveland.... And I'm obsessed. I put the 2750 Performer Manifold, the Performer Cam, and the 650cfm Thunder Series Carb from Edelbrock. Ive got great low-end torque considering the cam and manifold are both idle-5500. (Due to the length of the runners on the manifold.) Also, when it comes to the carburetor, for a 2v Cleveland anything higher than 700cfm and you will be over carbureted causing you to run lean. I know that Edelbrock has a 750cfm Performer carb, but I decided not to take the risk and went with the next highest carb which was the 650 Thunder Series. Plus, the Thunder Series carb have a new feature allowing you to easily adjust the secondary valves. Fine tuning is cake.

*NOTE*
Do NOT run the Performer RPM OR RPM Air-Gap intake manifold if you want low end tork!! The runner length on the RPM series from Edelbrock are much longer than the performer, hence losing your low end.
*********

I run Flowmaster exhaust and it sounds great. I kept the same heads because I did my research, and the stock compression ration of 1971 351 Cleveland is 9.5/1. So all I am going to do is have the heads milled, bringing the CR to about 10.2 maybe a little more. (Much more higher than that and I'll need a higher octane fuel.) And Im going to have them ported with a valve job. The CR changes higher to lower from 1970-1974. I only remember the first three and they were:

1970 Engine: 11.4/1
1971 Engine: 9.5/1
1072 Engine: 8.5/1

If you have a 73' or 74' engine just let me know and I will give you the CR specs.

Oh, and I run Dynomax headers. Goes great with my Flowmaster exhaust.

If you have any questions just shoot me a message.
Thanks,
Cameron

And P.S.
danford1 is totally incorrect! He doesnt make sense. For one, AusFordParts (Aussie,) makes both 2v AND 4v heads. And secondly, I would be totally embarassed if I were danford1 because he says that there are 2v and 4v headers.. when there is only one type of header. One header will fit the same as another. They all bold on the same.. wow.
Aus Ford Parts - Aussie 351 Cleveland Specialists

Also, danford1 says that the Performer Intake "falls off its face" past 5500rpm.. that may be correct BUT everything is going to peak at either 4600rpm, or when it comes to your torque, its gna be all the way at 2600rpm. Sorry, but don't pay attention to danford1.

Advertised Horsepower@ RPM 240@ 4600
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Advertised Torque@ RPM (ft. lbs.) 355@ 2600
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Good luck with your Cleveland!!

Originally Posted by CProc88

danford1 is totally incorrect! He doesnt make sense. For one, AusFordParts (Aussie,) makes both 2v AND 4v heads. And secondly, I would be totally embarassed if I were danford1 because he says that there are 2v and 4v headers.. when there is only one type of header. One header will fit the same as another. They all bold on the same.. wow.
Aus Ford Parts - Aussie 351 Cleveland Specialists

Also, danford1 says that the Performer Intake "falls off its face" past 5500rpm.. that may be correct BUT everything is going to peak at either 4600rpm, or when it comes to your torque, its gna be all the way at 2600rpm. Sorry, but don't pay attention to danford1.

Advertised Horsepower@ RPM 240@ 4600
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Advertised Torque@ RPM (ft. lbs.) 355@ 2600
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Good luck with your Cleveland!!

I`ve been following Danfords advice on the Cleveland Forum for the last five years, since I had my clevo or you were 11. I think he knows a bit more than you.
There are several differant types of header for a clevo, but mainly either 2V or 4V. Since you have dynomax headers like myself I`m sure you would have noticed when you ordered them that 2V`s come in two tube diametres and 4V`s also come in two tube diametres. And 4V headers will not fit US 2V`s whilst they will fit Aussie 2V`s.
Just thought I`d staighten that out.

Originally Posted by PEPPER

I`ve been following Danfords advice on the Cleveland Forum for the last five years, since I had my clevo or you were 11. I think he knows a bit more than you.
There are several differant types of header for a clevo, but mainly either 2V or 4V. Since you have dynomax headers like myself I`m sure you would have noticed when you ordered them that 2V`s come in two tube diametres and 4V`s also come in two tube diametres. And 4V headers will not fit US 2V`s whilst they will fit Aussie 2V`s.
Just thought I`d staighten that out.

Sorry, but it didn't occur to me that there were different headers, but I do know that the bolt pattern for both headers is the same and the 4v headers will work if you use the 2v gaskets. You will definitely lose some low end torque due to the fact that the primaries on the 4v's are pretty big. But, they will still work. I'm not trying to shoot Danford down but I was trying to pass on my knowledge the best I can. I realized he was wrong about what intake to use, then I noticed this problem, so I tried to fix it. I also tried to fix danfords statement saying that all Aussie makes is a 2v head.. when they make both. Oh, and my father is a mechanic of a little over 30 years, my age isn't totally important, I am just trying to learn as much as I can.

And I'm a little confused considering you say that you have been following danfords forums for five years... well that doesn't totally make sense because danford has only been a member since 2005.. not even 3 years.

Originally Posted by CProc88

Sorry, but it didn't occur to me that there were different headers, but I do know that the bolt pattern for both headers is the same and the 4v headers will work if you use the 2v gaskets.

4V headers will NOT work on US 2V heads, there is not enough area around the port, but they WILL work on Australian Ford 2v cleveland heads as they are differant castings and have enough material around the ports for the header to seal. The bolt pattern is the same on all clevelands.

Originally Posted by PEPPER

4V headers will NOT work on US 2V heads, there is not enough area around the port, but they WILL work on Australian Ford 2v cleveland heads as they are differant castings and have enough material around the ports for the header to seal. The bolt pattern is the same on all clevelands.

Sorry, I had read in another thread that they will work if you use the 2v gaskets. I stand corrected and thank you for the information.

danford has been on other cleveland forums and his advice is well respected. so some respect from a 16 year old is deserved. how many cleveland builds have you done and driven at 16 to have all this first hand knowledge.

Originally Posted by 72mustbrad

danford has been on other cleveland forums and his advice is well respected. so some respect from a 16 year old is deserved. how many cleveland builds have you done and driven at 16 to have all this first hand knowledge.

You are right, I am 16 and I definately don't have as much first hand experience as danford1, let alone I dont have as much as nearly anybody else that loves Clevelands. I greatly apologize for being incorrect and accusing danford1 of being wrong about the 2v and 4v different headers, I was totally off and greatly appreciate the correction. I was not trying to disrespect danford1 and I'm sorry if it came forward that way. He definately knows more about these engines than I do, but I found a few things that I thought were incorrect so I said what I thought. Like I said I know I was wrong about the headers, but wasn't I right when trying to correct danford1 when he said:



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*Quote from danford1:*
"Also the Edelbrock RPM is supposed to be a good intake - I just haven't tried one yet.
If you have 4v heads, there are many manifolds available. Reguardless of 2V or 4V, stay away from the Performer intake. They may work good on other engines but don't work well on Clevelands. Sure you will get some low end torque, but they fall on their face after 5500 rpm."

*Me:*
"Also, danford1 says that the Performer Intake "falls off its face" past 5500rpm.. that may be correct BUT everything is going to peak at either 4600rpm, or when it comes to your torque, its gna be all the way at 2600rpm."
Advertised Horsepower@ RPM 240@ 4600
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Advertised Torque@ RPM (ft. lbs.) 355@ 2600
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And was I not right here?:

*Quote from danford1*
"The Aussie heads are 2V heads"

*Me:*
"AusFordParts (Aussie,) makes both 2v AND 4v heads.
Aus Ford Parts - Aussie 351 Cleveland Specialists"
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Once again, I'm sorry, I don't want you guys to think of me as a rude teenager.. Sorry danford1, and by the way I read a lot of your posts on Ford 335 "Cleveland" Series Engine Forum, and thats some great stuff.

Hope we got all of that cleared up,
Cameron