if you have a chevy motor on board I think it would tend to gather revs too quickly for the standard diff, maybe change to a ford locker out of an f250 or 350 or detroit ten bolt, the carby may want to be rejetted for the extra lugging power needed but the diff may also have to be upgraded for the roadspeed gained by the extra power of the chevy
just be carefull of the clutch as well, with the extra pull gained it may shred very quickly if released too fast
I tried to edit the original post but it wont let me so I will have to start another
with the chevy 350 engine it would be best if you ditched the original carby and grabbed a holley 850 cfm twin pumper, have it jetted for maximum horsepower at a rev range of 2,500 -3,000rpm (less revs more torque = good) keep the ryco paper filter that will come with the kit
when installing the chevy try to keep the original chevys bell housing and clutch/pressure plate setup, replace the clutch/pressure plate/thrust bearing with a heavy duty one
I just thought I would add this whilst sitting here having a quick cuppa, I hope I havent discomboobalated you with extra info but if you have any other queries let me know in a week when we hit Darwin
it is a worthwhile excercise and will reward you with many worry free miles
Hi Daveo, I have it running on a twin barrel carby at present Hwy diff, Turner box and heavy duty clutch. was thinking of 4 barrel cary to give it abit of go on the hills.and just wanded what other people used as I know there are a number of 350 chev in buses out there.
O.K. you have a bit more than the basics and are well on your way, what brand is the carby, i prefer Hollerey as parts are readily available and they are a good unit, the adapter kits are available for nearly all vehicles and manifolds as well
the reason I recommend the 850 is simply for the high airflow (850 cfm) it is also a four Barrell with mechanical choke much better unit than the edelbrock which is an electric choke which often gives strife
you could get away with a 700 cfm four barrell double pumper but it is beyond my ability to calculate your airflow requirements under load, this is where talking to an expert would be the go, someone who deals with airflow requirements
I used a 650 cfm double pumper on a nissan patrol to do the simpson and "big red" pulling a camper trailer weighing in at 800 kilo's quite a few years ago now, it gave me roughly 40 horsepower more and increased my economy by 35 % all provable by my "little black book"
the original carbs on the nissans were atrocious
well gotta go, people waiting to have a beer and I gotta get up early tomorrow
