Yoos Brothers Construction

You can advance the timing as well but you don't want to advance it very far as they already have quite a bit of timeing to begin with. Josh

All I'm going to do is send the pump out and have the pump shop set it up the way I want. Thats all you really need to do to get the horse power your looking for. If you want more than that out of 325 you would need a bigger turbo but it would more wise the replace it with an E9 which is easy to get parts for if. As far as I know they didn't make bigger injectors for the 866 V8s but I don't know for sure. My RS700 has the 375 (it was originally a 325)with the 6 speed and my brother has the 325(originally a 375) with a 12 speed and what a diference there is between the 2. I do have a 1070 Mack 10 speed for mine but I need to overhaul it before I put in. The 10 and 12 speeds work really well with both engines but the 5 and 6 speeds work much better with the 325 than the 375 because of the torque differences and operating ranges as well. In my opinion a 325 with an old Mack 10spd or 12spd is the ultimate set up. Thanks, Josh

He put a million miles on it before he sold it in 1985. Of couse he rebuilt it once and always kept up on replacing bearings when needed and he didn't beat the liveing shit out of it . He respected the power. The problem now a days is finding parts for the 866's. There nearly impossible to find. Luckily my Brother and I have a nice little stash of parts just in case something ever goes wrong with ours. I'm going to have mine set up to be about 425hp in the not to far future because it runs really good but I would really like to make it run closer to what my Great Uncle had his set to. Thanks, Josh

Take it from me 325 is much better! My Brother and I have both the 325 and a 375 that are pretty much stock and the 325 has a much better torque rise. My Great Uncle had one years ago in a 71 R700 and he played with it quite a bit and he had well over 400 horse power. Just my 2 cent Josh

!! It's good to know I'm not the only one that's not affraid of driveing their short R700 V8 . I'm still alive and have a good back(for now ). That's a really good find. Hope you enjoy it and DON'T SELL IT! Operating range is 1350-2400 RPMS on the 325 V8s. Thanks, Josh

Mike that's just the right length . If it being that short really bugs you that much I'll definitely come to Iowa to get it . No jokes I'm serious! Josh

Yes I know Chris but not very well. He stops down to the block plant once in a blue moon. My Mom actually used to work in his wifes shop years ago and and she knows her farely well. I don't know Sprag at all but one guy I work with nows him quiet well. Thanks, Josh

Looks like it's Deadroit powered ! Other than that it looks pretty good . How much? Thanks, Josh

If it were me I'd leave the 6spd in as well. That has a 6spd overdrive which is very rare not to mention it has an EM9 which has a Maxidyne pump so it was designed to be lugged down to 11-12 hundred RPMs. Mack put alot of 6spds behind the older EM9s. Besides My buddy is on his third Fuller 18spd behind an E9 and it's on its way out after only a year. He said enough of this $hit, so this winter we're putting in a nearly indesructable Mack 12 spd which is what I told him to do after the first one screwed up. But you know what they say about opions . Just my 2 cents ! Thanks, Josh