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Jegs/Kaase SBF heads
check out this excerpt from Jegs website:
"By now we were starting to feel we had a really good product, but one doubt remained; testing was done on a large engine (392), how will they react on a 302? We borrowed a 5.0L, 1989 Mustang engine from Mustang Parts Specialties. This was a high mileage (100,000) EFI engine and my first introduction onto electronic fuel and ignition management. I feared we would need a whole front clip and dashboard brought into the dyno room. The MV Performance people were very helpful in bringing everything together I needed to get up and running. How would this wimpy little engine react to a good set of cylinder heads and would it stay together long enough to do all of our testing?
Our stock little 302 made 251 HP and 317 FT/LBS of torque, a good start! We already knew that installing our good heads and leaving the stock cam installed would be like putting a dress on a barnyard pig, so first change was to install a 218-228 hydraulic roller (about a 20 degree increase over the hydraulic roller). The power was now up to 268 HP, 330 FT/LBS of torque. Next we installed a Holley Systemax intake gaining 30 HP to 298. When we changed to the JEG’S/KAASE cylinder heads our little 302 picked up 83 HP! Now the dyno was reading 381 HP, 373 FT/LBS of torque. Installing our 256 degree mechanical roller increased the power yet again to 425 HP, 389 FT/LBS of torque.
At this point we had reached our goals and should have stopped punishing the stock bottom end of our junkyard 302. Like any good racer, I decided to install an Edelbrock Victor intake with a Holley 750 and go for the record. Until this stage we kept the RPM’s below 6800, but the shorter intake runners would like to peak power a little higher.
Sensing there was danger in the air we had pulled the pins in the fire extinguishers and rehearsed who had what duties when the explosion would erupt. We were astonished when the little junkyard engine cranked out 511 HP @ 7800 rpm! "
7800 rpm!!! on a stock 100K mile shortblock-WOW. Thats the man himself(Kaase) talking. Anyway, just thought I'd share, I hope this isn't old news. BTW, the crate 392 made nearly 600 hp with the 256 roller. Sounds like these heads are killer.
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1966 Mustang coupe, mild 308, T5, 9 inch, 4 wheel discs, Torq-thrusts
1965 F100, 351W, C4, 3.25's
1962 Falcon Futura 2 dr, future bracket car
2003 Mustang GT, 5 spd, dark shadow grey, bone stock weekend cruiser
<font size=-1>[ This Message was edited by: indigo66 on 8/13/04 10:52pm ]</font>
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