High Performance Big Block Cadillacs
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Author Topic: Ford Small Block Heads  (Read 5384 times)
Nick Campagna
C3
***
Posts: 180



« on: December 01, 2009, 11:17:40 AM »

Is it true that Ford Small Block Heads use an 11 degree valve cant angle ?
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Is the defect in what I see, or in what I'm seeing with ?
mt83
C3
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Posts: 184


I build go fast toys.


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« Reply #1 on: December 01, 2009, 01:07:07 PM »

yes on the boss, 351c and 400m heads they use a canted valve at 11*.
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Matt @ Cadillac Performance Parts
www.cadillacperformanceparts.com
Nick Campagna
C3
***
Posts: 180



« Reply #2 on: December 01, 2009, 02:22:58 PM »

Thanks.
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Is the defect in what I see, or in what I'm seeing with ?
dave brode
C5
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Posts: 1074


Best of 11.66, 113.96, 1.59 sixty


« Reply #3 on: December 01, 2009, 03:57:27 PM »

When you say sb ford, most guys think 221, 260, 289, 302, 351

[oops, forgot, there was a 255 in the smog years too, iirc]

Dave
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3960 lb '71 C-10. 11.7-1 CR 514". PEP I beam rods floating MTS 18cc dish Probes, Elgin solid cam, home ported heads, MTS 2.19/1.84", Potter/Probe shaft rockers, edel 2115, 4781 850. Switch-pitch TH400, 12" 1800/3200 Tri-Shield convertor, 4.30 gears. Best so far of 11.66, 114.8 mph and 1.59 sixty
Nick Campagna
C3
***
Posts: 180



« Reply #4 on: December 01, 2009, 07:12:33 PM »

I was referring to the 289, but by the time I got an answer, I had found the answer, for the 289, 20 degrees. It was good to have the 335 family answer also , though.
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Is the defect in what I see, or in what I'm seeing with ?
mt83
C3
***
Posts: 184


I build go fast toys.


WWW
« Reply #5 on: December 02, 2009, 10:07:39 AM »

There existed in the sixties a Boss 302 that had a canted valve head with 11* valves but very limited production.  I wish I had a set of those heads today.
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Matt @ Cadillac Performance Parts
www.cadillacperformanceparts.com
Nick Campagna
C3
***
Posts: 180



« Reply #6 on: December 02, 2009, 10:49:54 AM »

Hey Matt, you do cnc on 120 heads ? what is the flow at .1 .2 .3 .4 .5 .6
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Is the defect in what I see, or in what I'm seeing with ?
~JM~
Shop Keeper
C5
*****
Posts: 1853


« Reply #7 on: December 02, 2009, 12:31:22 PM »

There existed in the sixties a Boss 302 that had a canted valve head with 11* valves but very limited production.  I wish I had a set of those heads today.

In one of my biggest bonehead-kick myself in the arse-moments... In 1999 or early Y2K, I had the opportunity & the means, to purchase a fairly original 1970 Boss Mustang. It was a bit rough from sitting exposed to the desert, but looking back at it now....  Anyway... The owner knew what he had & it was expensive. They wouldn't consider anything less than $10K. I thought they were a bit optimistic & passed.

WhattadumbassIam!!! Cry Cry Cry
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PS. You don't have enough cam. Grin

...Summit has a kit for $99.... Shocked
dave brode
C5
*****
Posts: 1074


Best of 11.66, 113.96, 1.59 sixty


« Reply #8 on: December 02, 2009, 03:00:39 PM »

There existed in the sixties a Boss 302 that had a canted valve head with 11* valves but very limited production.  I wish I had a set of those heads today.


weren't they just 4 barrel C heads?
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3960 lb '71 C-10. 11.7-1 CR 514". PEP I beam rods floating MTS 18cc dish Probes, Elgin solid cam, home ported heads, MTS 2.19/1.84", Potter/Probe shaft rockers, edel 2115, 4781 850. Switch-pitch TH400, 12" 1800/3200 Tri-Shield convertor, 4.30 gears. Best so far of 11.66, 114.8 mph and 1.59 sixty
Nick Campagna
C3
***
Posts: 180



« Reply #9 on: December 02, 2009, 03:53:54 PM »

Boss 302 and 4 bbl 351 C heads were very similar. Difference in water passage but the 351 C could be drilled to use on a 289 / 302 block. Same port sizes, and 2.21/2.19 intake valves.
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Is the defect in what I see, or in what I'm seeing with ?
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