I was recently given a bit of info from a freind, a red utility, with a plastic carby & cowl with the first few digits 5680 and a corvette 160 with a G3 carby begining with 56903
The way i make these out depends a bit on the engine being series 70 or series 80.
If it has the starter on top, then it is indeed a Series 70, and would be a series 70 MKIV with a G4 (1974-1980).
The serial suggests 1978, whitch would indicate it is one of the later Series 70 MKIV's, I'm guessing it has the white face on the carby, with the primer bulb.
The Corvette would be one of the pre-runner series 70 engines, and It's serial indicates 1969, which would make it the S70 MKI, it would have origginally not had the decompressor, and the G3 carby would have been the type with the black float, and metal bowl.
I'll try and find out about more about the engines.
UPDATE: I cant get hold of them.
Last edited by Mr Davis; 03/09/11 10:45 AM.
