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Old 06-21-2005, 22:28   #1 (permalink)
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302C to 351

G'day fellow Ford persons! I'm considering changing a 302 Clevo into a 351. I believe that all I have to do is change the crank and rods. I'm also lead to believe that the heads are slightly different but will run fine on hi octane unleaded and may in fact increase compression and therefore horsepower.

Can anyone confirm or otherwise my thoughts>?

Ta.
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Old 06-21-2005, 22:37   #2 (permalink)
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Re: 302C to 351

your thoughts are correct.
its as simple as getting a 351 crank, some 351 rods and using them.

there are options how ever! you can also use the 302 rods with some application specific pistons.

The closed chamber heads on 302's will giv you a high CR. Make sure your block or head hasn't be decked to much and your CR should be ok for BP Ult.
I used 22cc dished pistons and shaved my heads 20thou for a CR of about 9.6:1. I wouldn't advise this.

Go stand 351 crank and rods, stnd 302 cc heads and use BP Ult. You will need hardened seats for this to work long term.

you have asked in the right place! if seomone else hasn't given you the run down before I get home, I can help out as I have just done this in the last 6 mnths.
still have cheap places where I ended up going,
one thing about my job, phone calls to anywhere are free, so when i shop around, I SHOP AROUND EVERYWHERE!
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Old 06-21-2005, 22:46   #3 (permalink)
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Re: 302C to 351

Thanks for that, much appreciated.

L.
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Old 08-06-2005, 04:49   #4 (permalink)
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Re: 302C to 351

Hi Guys, I'm considering the same mods to a 302C Black Block as well. But my intention is to run the 351 crank with 302 Rods & the appropriate pistons. It's for my 74 F100. Would appreciate any further info or tips available.
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Old 08-06-2005, 04:52   #5 (permalink)
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Re: 302C to 351

If your building a mild combo go for the 302Rods and Good Hyp Pistons to Suit. Any 351 Crank will do.
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Old 08-06-2005, 05:10   #6 (permalink)
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Re: 302C to 351

Quote:
Originally Posted by Red04VXE
If your building a mild combo go for the 302Rods and Good Hyp Pistons to Suit. Any 351 Crank will do.
hey nath what were the specs of your cam?
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Old 08-06-2005, 06:02   #7 (permalink)
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Re: 302C to 351

Started out as this lUNATI , Been changed after earlier blow up. Camshaft Mech.Roller RPM 2500–6800 Adv. Dur. 278 Int./285 Exh. Valve Lift .641 Int./Exh. Lobe Angle 112 Deg.
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