What kind if horsepower do you think you would get from a stock 259 with a jet thrust supercharger pushing through it?
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Thats probably a good guess. Remember the R series engines with a supercharger also had a different cam & dual point distributor with modified spark advance. Perhaps some of the guys from the Studebaker Racing Forum will see this & chime in too.59 Lark wagon, now V-8, H.D. auto!
60 Lark convertible V-8 auto
61 Champ 1/2 ton 4 speed
62 Champ 3/4 ton 5 speed o/drive
62 Champ 3/4 ton auto
62 Daytona convertible V-8 4 speed & 62 Cruiser, auto.
63 G.T. Hawk R-2,4 speed
63 Avanti (2) R-1 auto
64 Zip Van
66 Daytona Sport Sedan(327)V-8 4 speed
66 Cruiser V-8 auto
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The best you can hope for is 5# of boost at 5000rpm with an SN60 Paxton of 60's vintage. Horsepower loss from turning the supercharger must also be taken into account.Frank van Doorn
Omaha, Ne.
1962 GT Hawk 289 4 speed
1941 Champion streetrod, R-2 Powered, GM 200-4R trans.
1952 V-8 232 Commander State "Starliner" hardtop OD
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Actually 230 is only 5 more than a stock '57 to '64 289 4V, and 10 less than a R1 289 with 10.25 to 1 Comp. a bit too much for a Supercharged engine. But, the obvious trick is to get custom made higher Comp. pistons for a 259 at about 9.5 to 1 and do valve and head work, change to an R1/R2 Cam or an R2+ Fairborn Studebaker Cam.
I do think you would be looking at more like maybe 240 or so, stock with blower, but still not enough for the cost, and you WILL be needing R1/R2 Valve Springs!Last edited by StudeRich; 11-10-2011, 05:12 PM.StudeRich
Second Generation Stude Driver,
Proud '54 Starliner Owner
SDC Member Since 1967
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I thought with 6 to 7 lbs of boost you could increase by 50%.
As previously mentioned, the R2 made 49 more horsepower than an R1. That's about a 20% increase.
I'd agree with Rich, a 259" with increased compression and cam would be around 240 horsepower.
jack vinesLast edited by PackardV8; 11-10-2011, 05:14 PM.PackardV8
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Well, I've done it; having installed a complete R2 setup on a worn 1960 Lark VIII Regal 4-door with overdrive. Heck, I was only 21 or 22 when I did it, but it made a lot of power. 259s wind up so much faster than longer-stroke 289s, all other things equal.
Go for it! BPWe've got to quit saying, "How stupid can you be?" Too many people are taking it as a challenge.
G. K. Chesterton: This triangle of truisms, of father, mother, and child, cannot be destroyed; it can only destroy those civilizations which disregard it.
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