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Crossposting this from Ranger Power Station, it's no real big secret that Tom Morana and Super Six Motorsports use a factory Ford crankshaft to make their stroker kits for the 3.8L Essex V6 (They use a 4.2L crank). So I started digging to find out where Morana was getting his cast "stroker" crank for the 3.0L Vulcan and I believe he is using a machined 3.8L Essex V6 crankshaft.
- The main bearing journal diameter of the Vulcan and Essex cranks are identical.
- The piston pin bore on the connecting rods are identical between the two engines.
- The Essex's connecting rods are .382" longer than the Vulcan's, which may be able to be used to improved the geometry of the rotating assembly (Less side-to-side loading, more vertical movements, which means more stability and less wear) and increase rod ratio.
- The crank pin bore of the connecting rods are .1766" larger on the Essex.
- Due to the above, the connecting rod journal bearings on the Essex are .185" larger than the Vulcan.
- The crank snout is also a tiny bit larger (Still within the .150" range).
- Rear main seals are near identical in diameters between the two engines.
Do the math, the Vulcan's bore and the Essex's stroke, then paired with .060" over pistons and you get 3.3L, which is what Morana is advertising.
Due to the slight variances in cranks, it should be possible to have the Essex crank machined to fit the Vulcan's timing crank gear and harmonic balancer and perhaps the Vulcan rods and rod bearings. All in all there is a possibility for getting a "stroker kit" for less than $300.
Any takers, guinea pigs? Brad (loudsho92) I'm looking at you
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- The main bearing journal diameter of the Vulcan and Essex cranks are identical.
- The piston pin bore on the connecting rods are identical between the two engines.
- The Essex's connecting rods are .382" longer than the Vulcan's, which may be able to be used to improved the geometry of the rotating assembly (Less side-to-side loading, more vertical movements, which means more stability and less wear) and increase rod ratio.
- The crank pin bore of the connecting rods are .1766" larger on the Essex.
- Due to the above, the connecting rod journal bearings on the Essex are .185" larger than the Vulcan.
- The crank snout is also a tiny bit larger (Still within the .150" range).
- Rear main seals are near identical in diameters between the two engines.
Do the math, the Vulcan's bore and the Essex's stroke, then paired with .060" over pistons and you get 3.3L, which is what Morana is advertising.
Due to the slight variances in cranks, it should be possible to have the Essex crank machined to fit the Vulcan's timing crank gear and harmonic balancer and perhaps the Vulcan rods and rod bearings. All in all there is a possibility for getting a "stroker kit" for less than $300.
Any takers, guinea pigs? Brad (loudsho92) I'm looking at you