BOSS 302 Forums > Trans-Am Racing
B2 heads with water outlet tapped on the front of the head
supershifter2:
I'v seen a few b302 and nascar b429 engines with a dry intake and a pipe on the front of each head run to a tube that runs to the radiator for the cooling. i'v heard this was done to keep water out of the intake so it stayed cooler and was worth about 15 hp. can anyone substanciate this ? if its really worth an xtra 15 hp i'm gonna do it on my race engine. this is a b429 with the dry intake.
hotrodford:
In essence, that is what Ford did with the Cleveland. Must have been some "reasoning" behind that decision.
Danoh1:
I have a completely unscientific theory on the 351C. The engineer they hired used to work for Chrysler. The oiling system is a mirror image a smallblock Chrysler. Early Chrysler heads were "poly angle".
I doubt a dry intake is worth 3 hp, let alone 15.
coupe3w:
--- Quote from: Danoh1 on May 19, 2012, 09:23:44 am ---I have a completely unscientific theory on the 351C. The engineer they hired used to work for Chrysler. The oiling system is a mirror image a smallblock Chrysler. Early Chrysler heads were "poly angle".
I doubt a dry intake is worth 3 hp, let alone 15.
--- End quote ---
The 351C block also shared many similarities with Oldsmobile’s Rocket V-8. In conjunction with the similarity of the 351C head to the BBC, it has led to some conjecture that the Cleveland might’ve been heavily influenced by Semon E. “Bunkie” Knudsen, who defected from GM to briefly run Ford in 1968.
bowsher21:
--- Quote from: supershifter2 on May 19, 2012, 12:26:54 am ---I'v seen a few b302 and nascar b429 engines with a dry intake and a pipe on the front of each head run to a tube that runs to the radiator for the cooling. i'v heard this was done to keep water out of the intake so it stayed cooler and was worth about 15 hp. can anyone substanciate this ? if its really worth an xtra 15 hp i'm gonna do it on my race engine. this is a b429 with the dry intake.
--- End quote ---
Yes It WORKS a bunch. The hot water heats the intake, that transfers heat to carb which transfers heat to gas and incomming air charge which makes the air /fuel mixture less efficiant which produces less power.
Look at high perf "spider" type intakes. They have an air gap from carb base to lifter vally to reduce heat transfer. You can find Boss-9 intakes from the NASCAR Big Block era with small air gaps. Ever see a coffee can with a coil in it that fuel runs through? They fill it with ICE to chill the gas to chill the carb to increase power. Also, there are two big reasons why NASCAR race cars have air box's pulling air from the windshield, high pressure air supply and cool air for more power. Cool the intake, make more power for sure.
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