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I'm building a 2056 for my Ghia, looking for a little more 50mph to 90mph "Grunt". I don't want to break apart the engine yet, but want to run it to get used to the type 4 engines character.

I understand that the stock rods are good, but that the bolts are the weak link. I have an idea that I can replace the bolts by carefully removing them, one at a time, out the piston/cylinder spigot. I take one out, replace and tighten, and then the other. The bearing halfs stay in place, and then they get torqued to spec.

Has anyone tried this?

And this is a GB series engine from a 76 automatic bus. Does anyone have the cam lift and duration number?

thanks, Jeff

You will need to remove the rods. Replacing the rod bolts will mean having them resized. Its worth it to have them balanced while the yare out. Ray

jeffheiger wrote:
I understand that the stock rods are good, but that the bolts are the weak link.

I respectfully disagree.
Maybe for a 7500 rpm screamer, but for 95% of the 2056 engines which usually don't rev crazy and make power at or below 6000rpm, not neccesary imo.
I have never met somebody or heard from anyone that they had lost a 2,0 rod in a tuned type 4.

My own 143 hp (@ 6k) 2056cc has stock rods with re-used rod bolts as well...