jzack

True. I'll take a closer look at them.

Behind 30 years of crud, it looks like the bump stop bolts are in place. I rarely hold the wheel against the stops as you can tell. After thinking about this, I think this has something to do with the front suspension loading and un-loading somehow affecting my steering center. This is because I get the same effect while braking and accelerating. When I brake, the steering wheel goes 1/8 turn to the left. When I accelerate under load, the wheel goes 1/8 turn to the right. Question is, how is this happening with a solid front axle and why does it have such a long delay before the wheel goes back to center? Maybe some of this is normal too, but now it's more pronounced for some reason.

It should have plenty of castor. My local alignment shop usually maxes it out with some aluminum shims under the springs.

Thanks, I'll look into that.

Are you talking about the plunger bolts on the top and bottom of the steering box? Or something in the linkages? That's what I thought that screw could be for after looking at the manual, thanks for verifying that.

Yes, all of those have been replaced in the not-so-distant past except the tie-rod ends and they seem tight. What about the steering box? It is the original Shepard I think with 1.4 million on the truck. Is there an adjustment screw to take up gear lash like on a Dodge? I found this screw on the bottom but I'm not sure about it as it doesn't have a lock nut.

Hello all. After making a left turn, the steering wheel will stay turned to the left an 1/8 turn for a short while then go back to center, all while the truck is going straight down the road. It also does this turning to the right. Otherwise, everything is normal and tight with the steering system. Any idea what could be causing this?

Thank you, I have a 3.86 ratio on Mack rears, and an Eaton 9 speed with a 0.73 final. It does pretty good on the freeway, maybe 1550 RPM at 65 mph. When it came time to do the injectors I had always planned to go bigger but at the time (stock turbo with Blixxton) I was pushing 1000-1050F on the pyro in July and August so I chickened out and kept them stock. I have no doubt I could safely run a stage 2 injector now with the new turbo. I should also mention that I run a high-flow muffler from Grand Rock that also helps keep the EGTs down a bit.

Personally, I like the National seats. More comfortable and better riding than Bostrom or the Seats Inc from Mack. Plus, they seem to be designed for less (ahem) portly drivers like myself. I got mine for a decent price from Northern Tool but it looks like they no longer carry National. Looks like FleetPride does though. This one is my favorite (link below), but FleetPride has another National with dual armrests (second below) for only $800 that should also fit in the Mack cab. https://www.fleetpride.com/parts/national-seating-seat-51100665cb https://www.fleetpride.com/parts/national-seating-seat-50764365?gad_source=1&gbraid=0AAAAAqwOmIVwCX-A43qzn_XMCg9hdRL__&gclid=Cj0KCQjwiLLABhCEARIsAJYS6um6AeIx1adiksrWNiLbpQytHQ-Xdi0YyuoiFPWVgp01WB27Y6zhUIAaAmr0EALw_

Thank you! I've been running this same truck for 30 years now in March. It's never been out of service for more than a few weeks at a time. Our company also has some brand new Kenworths and Petes but this old CH just plain drives better and is more comfortable.

Well, I've run this new .5 stage turbo from Rochester Diesel for a couple weeks now and I'm really impressed with the performance. It's not laggy at all, in fact it spools a little quicker than my 350 turbo. Boost is now a solid 35-38 PSI and that's with my stock 350 injectors and the Blixxton at 30%. The best part is my EGTs are now 150-200F cooler than before. I haven't seen it go over 800F even on a hard pull. I may put it on the dyno sometime as I'm curious to see what it's putting to the ground now. It wasn't a "direct" bolt on however as the oil feed line had a different fitting so I had to replace the entire line with SS braided and new fitting like what's on the E-Techs. Cheap insurance though. Comparing the compressor outlet between the two in the pics you can really see the difference in flow. A lot more volume of air is being moved and you can really hear it in the cab now at full boost.

Not a bad interior for a day cab. Cloth with carpet and wood dash. Lots of foam sound deadening in the headliner and other places too. I think Mack called it the "Preferred". One step below the "Elite". Much better than today's trucks with the snapped together playskool plastic panels that buzz and rattle all day.

Sure, here are some pics. Just a one stack Mack with a window in the back but it has got the job done for over thirty years now. I could drive a 2024 Kenworth T880 but honestly this truck drives and handles better and has a nicer interior. Just a solid little truck.

You're welcome! As an aside, I've been running a Blixxton on my 94 E7350 since 2007 with great results. Having a pyrometer really helps to monitor engine temps in July and August when pulling long hills. Rarely did I have to back off the accelerator but sometimes (very rare) exhaust temps would reach 1,100F. I leave it on 30% most of the time and the advertised power increase seems accurate as I could run side by side with our 99 E7460. While the boost isn't as high as the 460 (30psi vs 35psi) the 350 has higher compression pistons so you don't need as much boost to make similar power. The downside is heat and cylinder pressures. The smaller turbo on the 350 doesn't help in the heat department either. But it does build boost much faster than the 460. Always tradeoffs! Since I'm on my original turbo at 1.4 million miles I decided to be pro-active and order a new one from Rochester Diesel. I told them my situation with the Blixxton on a E7350 and they said they had the perfect turbo for me. It's a hybrid they build themselves using the exhaust side of a 427 and the impeller/boost side of a 460. It will bolt right on they say. I'm hoping it will lower exhaust temps and give me a little more top end boost. We'll see. I'm sure the boost will build a little slower but hopefully I can live with it. Like I said, always tradeoffs. I'll post back with results in a few weeks.

Here is a link to another tuner that looks very similar to the Blixxton. https://www.parleysdieselperformance.com/products/ag-diesel-solutions-30000-performance-module-for-1993-1997-mack-e7-engines?gad_source=1&gclid=Cj0KCQiA2oW-BhC2ARIsADSIAWpF6FCfM98UcKBhACMQioZ6npOyfdx9fTi2lRbNPemJIep8a9Aj8-IaAjSSEALw_wcB