Boring and Stroking
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if that is all you are doing then not much. you need more air to feed the extra displacement. no change in air means no change in power. for your money you will get alot more power from a set of ported heads and a good exhaust.
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I plan on changing the displacement from a 330 to a 428, dual overhead cams, high lift cams and valves, porting and polishing the heads, a 2.8 Liter Kenne Bell Supercharger, Headers, true dual exhaust, intercooler, dyno tuning, 4.10 rear end, and a 6 speed auto tranny.
Laughing Gas
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From: Imperial, MO
Originally Posted by jcarlson
How much of a horsepower and torque gain should I expect from Boring a 5.4L from a 3.55 to a 3.92? Then Stroking it from a 4.16 to 4.415?
-Rod
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Had to look at your profile...but didn't find the answer as to why you are asking this question.
You are headed down the wrong road with this engine.
Peruse the December 2007 Road and Track. Super Snake Mustang, bigger blower and other (unspecified in the article...) mods, 605 horse.
Stock bore and stroke.
Feb 2008 Car and Driver, 0-200-0 article. 2006 Ford GT. First place. Drives easy on the street. 10.52 @ 152 in the quarter. 0-200-0 in 26.5 seconds. Estimated HP: 1098. Stock crank, rods, pistons....
In these two cases, why wouldn't they add displacement instead of bigger blowers or twin turbos?
Perhaps you should do more research.
You are headed down the wrong road with this engine.
Peruse the December 2007 Road and Track. Super Snake Mustang, bigger blower and other (unspecified in the article...) mods, 605 horse.
Stock bore and stroke.
Feb 2008 Car and Driver, 0-200-0 article. 2006 Ford GT. First place. Drives easy on the street. 10.52 @ 152 in the quarter. 0-200-0 in 26.5 seconds. Estimated HP: 1098. Stock crank, rods, pistons....
In these two cases, why wouldn't they add displacement instead of bigger blowers or twin turbos?
Perhaps you should do more research.
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From: Louisville,Ky.
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The OP says he wants to use a supercharger.
I think Ford developed these engines with supercharging in mind. Now the GT engine is probably the recipient of some special parts when it is sold at the stock 500 horse level. That those parts live at 1000 horse is pretty impressive. The Shelby at 605 STILL HAS A WARRANTY. They will up it to 725 w/o warranty.
As pointed out earlier, you really can't do a big overbore, and why add stroke when you are already over 4"?
On these motors, it seems like you add boost, not cubes.
I think Ford developed these engines with supercharging in mind. Now the GT engine is probably the recipient of some special parts when it is sold at the stock 500 horse level. That those parts live at 1000 horse is pretty impressive. The Shelby at 605 STILL HAS A WARRANTY. They will up it to 725 w/o warranty.
As pointed out earlier, you really can't do a big overbore, and why add stroke when you are already over 4"?
On these motors, it seems like you add boost, not cubes.
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Originally Posted by jcarlson
I plan on changing the displacement from a 330 to a 428, dual overhead cams, high lift cams and valves, porting and polishing the heads, a 2.8 Liter Kenne Bell Supercharger, Headers, true dual exhaust, intercooler, dyno tuning, 4.10 rear end, and a 6 speed auto tranny.
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From: Louisville,Ky.
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Seeing as how the Modulars only have a 3.94" bore spacing, a 3.92" bore would leave you with no cylinder wall. No cylinder wall no power.
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