New 5.5:1 Cylinder Head Availability

[nkaminar]

B Butturff, To tell what kind of bearing you have without opening up the engine, you can use a bore scope and insert it into the hole after you take the breather tube out. The poured bearing at the rear has a large poured flange at the forward end that is used as a thrust bearing.

The 6.0 head puts out slightly more torque and horsepower than the 5.5 head, which may be because of better breathing rather than the higher compression ratio. In my opinion the hart shaped combustion chambers do not breath as well as other designs. See https://www.snydersantiqueauto.com/c...%20release.pdf

[BButturff]

Originally Posted by nkaminar

B Butturff, To tell what kind of bearing you have without opening up the engine, you can use a bore scope and insert it into the hole after you take the breather tube out. The poured bearing at the rear has a large poured flange at the forward end that is used as a thrust bearing.

Neil, thanks for this tip! I've never read or heard of this before and will do it very soon.

[alexiskai]

Originally Posted by BButturff

Neil, thanks for this tip! I've never read or heard of this before and will do it very soon.

If it's insert bearings, instead of a gray flange on that rear bearing, you'll see a brass thrust washer.

[BButturff]

Originally Posted by alexiskai

If it's insert bearings, instead of a gray flange on that rear bearing, you'll see a brass thrust washer.

Thank you too. The brass should be readily apparent with the illumination from my bore scope.