Motor differences

[Grand Marquis GT]

Hey ed, what is the weight of a 351C, compared to a 302?

[Mercracer]

I will have to look later, but it is well over 100lbs.

[88Vic]

I was doing a little digging and I came across one of my old threads. You guys cleared up some of my questions, but I still have a few questions:
From what I can tell, the 74 Torino/Montego 351C 4V heads are the best flowing stock heads. Are these heads difficult to find and/or expensive?
Are the valves/lifters the same as the 351W?
And, would these heads work on a 351W block?

[JumboFriendly]

I don't think the heads will interchange.

[Mercracer]

From what I can tell, the 74 Torino/Montego 351C 4V heads are the best flowing stock heads. Are these heads difficult to find and/or expensive?
Are the valves/lifters the same as the 351W?
And, would these heads work on a 351W block?

Those heads SUCK!!.
2V valves with 4V ports and a HUGE chamber. The valves are the same as 351M and 400 NOT 351W. Not the head you want to use for a Clevor build (351W block Cleveland heads).
They are not easy to find and not worth the cost.

[DuceAnAHalf]

http://www.pricemotorsport.com/ Sells everything you need to build a Clevor besides the block and heads.

[88Vic]

So which Cleveland 4V heads would be ideal to put on a 351W block that would be easy enough to find and not cost a fortune?

[Mercmarquis]

70-71 4v heads. Closed chambers, big valves and huge ports. You'll pay some $$$ for em. Not only that but you can guarantee you'll need to rebuild the heads cause they are so old. Its less hassle and cheaper just to buy aftermarket sbf heads instead of building a clevor. Prolly will make more power too.

All the other cleveland heads suck cept for the australian 2v heads. Theres a company reproducing those in aluminum now I think.

[DuceAnAHalf]

70-71 4v heads. Closed chambers, big valves and huge ports. You'll pay some $$$ for em. Not only that but you can guarantee you'll need to rebuild the heads cause they are so old. Its less hassle and cheaper just to buy aftermarket sbf heads instead of building a clevor. Prolly will make more power too.

All the other cleveland heads suck cept for the australian 2v heads. Theres a company reproducing those in aluminum now I think.

http://www.edelbrock.com/automotive_..._sb_clev.shtml

[1987cp]

Oh cool, they did finally introduce those new heads. Now if someone starts making an aftermarket 351C block, it'll actually be practical to build a Cleveland motor in the future.

Of course, I remember seeing an article on the Edelbrock 351C heads before they were introduced .... seems the flow numbers weren't quite as stellar as you'd expect. Anyone happen to know which magazine it was in?

[Mercracer]

Regarding the Edelbrock heads, peak flow numbers do not always make the most power.
Regarding "All the other Cleveland heads suck", 351C 4V open chamber heads have the advantage of unshrouded valves. They were actually chosen over closed chamber heads back in the day for drag racing because of better flow. These days people are worrying about trying to run their cars on low octane fuel. A quench chamber with a dish in the piston will help prevent detonation with the lower octane.

[gadget73]

Using a Cleveland type head on a Windsor block requires a special intake, and modifications to the engine block.

http://www.darkhorseracing.net/clevor_head_mod.htm

if you want to know the nitty gritty. For the work and expense involved, honestly you're better off with an aftermarket Windsor head. Probably will end up being cheaper than obtaining a reasonably rare 35 year old part and having it rebuilt and modified for use.

[Mercracer]

I have a 351C 4 bolt block, a mech roller cam, open chamber heads, 12.5 to 1 forged pistons and other stuff for sale.

What are the specs on your cam? Are the pistons for open chamber? Do you have any intakes for sale?

[1987cp]

Do you have any intakes for sale?

A guy I know of might still have an Offy dual-port intake, I think an Edelbrock intake, and if I remember correctly, one set of quench heads and one of either two-barrel or police interceptor heads. I can find out if you're interested.

[Mercracer]

A guy I know of might still have an Offy dual-port intake, I think an Edelbrock intake, and if I remember correctly, one set of quench heads and one of either two-barrel or police interceptor heads. I can find out if you're interested.

Thanks, but the dual port Offy intakes are not a performance intake. I may be interested in the Edelbrock intake depending on which one. What head are you calling a Police Interceptor head? The only PI head that Ford ever really had was a 429 head.