[cwcarpenter98]

Originally Posted by LT7A

Good work. You and I might be the only two in the whole trucking universe that will spend a little money on a 305. I understand the rationale of building a bigger engine when it costs the same. If you already have that other bigger engine... To get the value out of a 305 one needs to understand why it's built the way it is and most people don't take the time to do that. Do you know the specs on yours? Mine is an LE9 which means that it is designated as high torque from the factory. It actually has higher compression, about 9.2. And then the ESC is there to retard the timing if it starts to ping. Kind of cool when you think about it. 305s are long stroke and narrow bore. That allows them to have the mechanical advantage to provide torque to get you up to speed with a load. But then it runs out of air because of the heads and the valves with the narrow bore. So yeah, it's not capable making a lot of power. But if you set it up right, it's a motor that can get you up to speed and keep you there, while burning a little less fuel. Have you looked into the summit cams? An 1101, or an 1102 might take great care of you and are priced well. If you don't need to rebuild that motor yet, I wouldn't. Just putting in the cam and lifters and getting back on your way should be pretty economical and quick.

Thanks for the explanation on the 305. Sounds like it will still fit the bill for what I want out of the truck, and I can still say it has the numbers matching engine. The code on the SPID is LG9, but I'm not sure if that's the code you mentioned. I don't believe that my truck has the ESC system. It is just a 2 barrel carb, but that'll most likely get replaced by a Quadrajet at some point.

I am going to go through with a full rebuild even though I could probably get away with just the cam and lifters. There's a lot of crusty looking carbon buildup throughout the engine. While it's out, I want to just do it all at once. I really don't want to pull the engine again after 6 months to do the stuff I didn't do the first time.