I found this on the H.A.M.B. thought it was interesting to see such a report when these R engines were knew to the automotive world.
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R3 report in June 1963 Car Life
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I got 405 hp out of the last one we built.Bez Auto Alchemy
573-318-8948
http://bezautoalchemy.com
"Don't believe every internet quote" Abe Lincoln
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Originally posted by PackardV8 View PostDo the photos of the cylinder head combustion chamber look like the production R3?
jack vines
PS....those are A.G.'s arms/hands!
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Those combustion chambers look like reworked standard heads. The R3s I've been involved with have a more oval combustion chamber, and less of the heart shape of the standard heads.Bez Auto Alchemy
573-318-8948
http://bezautoalchemy.com
"Don't believe every internet quote" Abe Lincoln
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Originally posted by bezhawk View PostThose combustion chambers look like reworked standard heads. The R3s I've been involved with have a more oval combustion chamber, and less of the heart shape of the standard heads.
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Is that an error in the intake diameter? Seems too small and the intake seat cut is close to the chamber wall. The cam duration seems wrong too. Those figures would calculate to more than 288 degrees.
Yes, those chambers are standard head ported chambers. You can see the eyebrow layback work. So that introduces the question of the intake used unless there was some head entrance welding to install the tall port R3 intake. Also first I ever heard of a dispute over the record runs certification.Start and Stage Your Studebakers
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Last edited by bezhawk; 10-26-2016, 07:59 AM.Bez Auto Alchemy
573-318-8948
http://bezautoalchemy.com
"Don't believe every internet quote" Abe Lincoln
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Originally posted by 11SecAvanti View PostAnd the rest of the story on the custom grind cam is????
jack vinesPackardV8
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Originally posted by PackardV8 View PostR3 Urban Legend has it the original Paxton-built 299" engine's cam was an Ed Winfield grind and it and the ported stock heads made more horsepower than any of the production R3 304.5" engines.
jack vines
Didn't one of the early 299 cu in R3 prototypes (maybe the engine in the R-1025?) get to that displacement through a combination of overbore and a small increase in stroke? I thought I remembered reading that the Granatellis believed the stroke increase would make the engine more competitive with the 426 wedge Mopars in 1/2 mile drag racing. It seems like a lot of trouble when you could easily get that displacement with a bore job.
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Originally posted by PackardV8 View PostR3 Urban Legend has it the original Paxton-built 299" engine's cam was an Ed Winfield grind and it and the ported stock heads made more horsepower than any of the production R3 304.5" engines.
jack vines
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