I want to put together a NA 13B block and was wondering if you can interchange parts like this.

89-91 NA rotors and seals
89-91 TII rotor housings
89-91 TII intermediate housing
89-91 NA front and rear housing

I appreciate any comments or suggestions, I am just trying to build a strong 13B with available parts.

 

Yes, you can use the TII intermediate housing and rotor housing. You'll need the counter weight from the 89-91 NA when using the 89-91 NA rotors.

Sounds like you have a good plan for a strong motor. I'm personally using the same setup as you have planned minus the TII intermediate housing.

There are a few people on here running the TII intermediate housing in the N/A, it's better than the N/A housing because it offers more material to port.

I'm assuming your running the TII parts to add a streetport, which is a good idea....trust me...

 

Thanks for the reply

Yeah I'm using the TII parts because they start off with bigger ports (intake and exhaust), there is more material for porting, and the TII parts are generally more heavy duty.
i.e. Like the plating on the TII rotor housings is better
Things like that. And there are a ton more broken TII motors than there are 89-91 NA motors.