Since this motor was non-numbers matching, and a 350 to boot, we chose the latter. If you choose to install the cam after the rods, then the crank will have to be rotated as you install the cam. This will significantly improve oil flow.5.
His work has been featured in Car Craft, Hot Rod, Rod & Custom, Truckin’, Mopar Muscle, and many more. His career began in the car audio industry as a shop manager, eventually working his way into a position at Rockford Fosgate as a product designer. Just going back stockIt depends on the machine work you are having done. This will prevent straining or distorting the parts as well as preventing thread damage. All of this adds up to an extremely durable motor, which with a little tweaking, is capable of supporting 1,000 horsepower. Not for the faint of heart, we opted for the largest cam Poston Buick makes for the 350, with over .520” lift and 302 degrees of duration, you will hear the GS coming long before you see it. The Buick 350 has the longest stroke of all the GM 350 engines. It is certainly reasonable on machine shop labor if you are having it bored, honed, crank and main journals turned, etc. There is a huge amount of support for the 215, principally because of its lengthy use by Rover, spanning a period of 38 years (1967-2005). The neoprene seal was installed offset about a ¼”, so the seal wouldn’t leak in the middle.17. All done, the short block is complete. The little Buick also features a deep-skirted block, higher nickel content, external oil pump and is 100 pounds lighter than the small-block Chevy. Using a 7/16”, 12-inch bit, open the oil feed from the oil pressure sending unit to just shy of front cam bearing. The original design of the Buick 350 differs so much from the traditional small-block Chevy that people are afraid of it. I would absolutely look into the oiling mods we spec and either groove the block for the cam bearings of buy grooved cam bearings. My book “How to Build Max-Performance Buick Engines” is a great place to start.I have a 70 Buick skylark with 350 2 bbl.. engine won’t hold oil pressure anymore..so I’m getting rebuilt..$2000 to get it machined and $750 for rebuild kit.
ANother key issue is the tolerances, Buicks like tight tolerances, you can’t slap it together using SBC tolerances.Has anyone heard of shakers in Granger Indiana?? He added some small divots with an awl, where the seal goes, to give it some teeth to help hold the seal from turning. Aaron Maynard Recommended for … The internal components for the engine were sourced from Poston Buick, a Buick-only specialty shop. We spent the next weekend dropping in the motor.
Buick 455 builders might stay away from high volume oil pumps, but there is no problem using one on a 350.25. They had a pretty hot 87 Turbo T. Honestly, any one with modest engine building skills can build a proper Buick engine, they just need to be willing to build it to your specs. As luck would have it, a good friend just happened to have a 1971 Buick 350 4-barrel that he had pulled from his Chevy truck (that is another story all together) and offered it to me for free. Jefferson has also written 5 books and produced countless videos. I had no idea of the condition of the motor, but we fired it up and it ran, it was quite strong at that. The cam was installed along with the timing chain.
Using Sealed Power Hypereutectic pistons, final compression for the motor came in at 10.1:1. No more rope.27. The oil stays that amber color for awhile.
There have been promises of an aftermarket head for 20 years, but it has never been delivered.I have had my 1972 GS 350 Convertible since 1975. Times have changed, parts get cheaper, labor goes down as guys figure out how to get the most bang for the buck in terms of efficiency.
that must be adhered to in order to make it last. These specifications are for clean and lightly lubricated threads only.
It is important that these specifications be strictly observed. Every part used in the build was an off-the-shelf part, no custom made unobtainium materials here. The progress of the rebuild had reached a point where it would be sitting for a while anyway, so out it came, ready for a rebuild.For muscle cars, the rebuild process offers 2 options, go stock and keep it all original or pump up the power and add some ponies to the mix. I never did find the last 3 lobes of the camshaft.Needless to say, the block was history. The basics of gasket port matching and general clean-up of the combustion chamber and ports is fairly simple work. Repco-Brabham also based their F1-championship-winning V8 (SOHC per bank) on the Oldsmobile 215 turbo block, and subsequently developed it into a 5-litre quad-cam 32-valve sports car engine.You are absolutely right, you can even get aftermarket heads for the Rover engine. They are a little noisy, but worth it in drivability.1. and a quick measurement tells us that the block hasn't already been bored 30 over. The rods can hit the cam if the crank is rotated and the cam is not. This will prevent straining or distorting the parts as well as preventing thread damage. Adding to this is the under-square bore\stroke (3.80” bore, 3.85” stroke) which yields incredible torque. Simply click on the Fluid Capacity Lookup button below, and then follow the directions to prepare a complete and printable list of filters and fluid capacities for your vehicle. i think this thing'll clean up at 30 thousandths easy.
144,000 miles. The little Buick also features a deep-skirted block, higher nickel content, external oil pump and is 100 pounds lighter than the small-block Chevy.