Cost for labor on stroker build?
Hey FABO, I’ve been looking into building a 340 based stroker (416). I have stock bore so I will need machine work done. I was wondering what the cost (ballpark) will be in terms of labor if I buy all the parts for the stroker. I will be pulling the motor out of my car in order to bring it to a machine shop.
Thanks!
A quick glance at my recent machine shop bill for my 340/420: (I gave him the block and main bearings only.)
Machine work:
Clean & Mag $125
Bore & hone $300
Deck Block $175
Assembly and parts: My shop would not allow me to buy my own parts. He wanted to choose the parts if he was doing the machine and assembly. We did agree on the parts ahead of time, but he had more vendors that he used on a weekly basis to help out on delivery issues at that time.
Short block Assembly $450
Cam bearings $73/Freeze Plugs $24/Install $75
Rings and bearings $435
Cust Pistons $1310
Main Studs $110
4” Crank $800
Rods $610
Balance Assy $200
Machine block for clearance $200
The biggest problem that I ran into was the timing of the machine work. Around here, covid took out a few engine shops and the shops left were only running with 1-3 employees. The backlog of the shop that I chose was about 12-16 months at the time that I dropped off the block. The entire waiting period was around 19 months to get the assembled block. So, the machine and assembly was in the 3 month range with parts.
The longest lead times besides the block work, was the 6-8 weeks for custom pistons, then I recently had another 10 week delay for valve springs.
Hopefully you have better results on parts deliveries/back orders.