Heart Surgery

[dbrannon79]

iirc the lifters are the same design as a normal SBC engine. they will continually rotate in the hole at the engine runs.

 

[Twisted Steel Performance]

Does it matter which way the oil port on the lifter faces? Mine were all different.

Machine shop said about 4 weeks turnaround for the block and crank.

Technically it doesn't matter, I locate the hole towards the rear, the oil flow comes from the rear. And our lifters don't rotate.

 

[Twisted Steel Performance]

iirc the lifters are the same design as a normal SBC engine. they will continually rotate in the hole at the engine runs.

No sir, ours are roller lifters, not flat tappets ...

 

[dbrannon79]

No sir, ours are roller lifters, not flat tappets ...

Thank you, I had always thought the factory ones were flat on the bottom and the roller was a performance thing. I learn something new every day

 

[93detroit]

Ready to go to the machine shop for hot tank, magnaflux, then (hopefully) decking and honing.

 

[93detroit]

I just confirmed with Promaxx that their heads have replaceable valve seats.

 

[ak diesel driver]

Interesting

 

[93detroit]

Hold up!!
At 4:30 a phone call confirmed that they had removable valve seats.

A 7:35 email said they DON'T have removable valve seats.

I'm a bit of a pessimist on this one- gonna go with they don't have them unless somebody here has proof to the contrary. Bummer