Machine questions

[Rhinospeed84]

I have just purchased a STANDARD BLOCK CASTING # 6109 with the oil drain back hole in front undrilled. What special machine work has to be done to retrofit this shortblock into my 84 Gn

 

[Dwayne]

none that I'm aware of....the 84 thru 87 blocks are interchangeable.

 

[Rhinospeed84]

good

Thanks for the help I have a couple more questions. Do I need to have the front return hole drilled as the turbo is located in the rear on hot-air cars?

I am planning on purchasing the postons master rebuild kit with forged piston's is this a good deal for the price?

and lastly what machining do you recomend I have done on the crank and block, as I want this to be a reliable daily driver with max rpm around 5800 rpm?