It’s pretty well known that engine oil with a higher rated viscosity tends to rob power from the flywheel end of the engine. It’s this mentality that has the new car manufacturers using lighter weight engine oils in which to increase the fuel efficiency of their engines as well as pick up some additional power.
In dyno testing the different intake manifolds on various engines, it’s found that the intake runner and plenum designs are main players in determining what the power curve for a particular engine combination will look like.
With the iron 113 heads on the dyno mule, the Edelbrock #257 2X4 intake that had been ported by Joe Craine did exceed those numbers generated by the stock Mummert intake and single four barrel carb combination. Now it was time to install the aluminum heads on the 312+ dyno mule and see how those same dual quad manifolds would fare. Continue reading “Y-Block Ford – Dual Quad Testing on Aluminum Heads – Part II”
With the resurgence of the Ford Y engine making a comeback as a viable replacement power plant for more than just mid-Fifties Fords, there is suddenly a demand for both modern performance and old school looks being in the same package. Continue reading “Y-Block Ford – Dual Quad Testing on Iron Heads – Part I”
In the course of milling cylinder heads for a specific decrease in combustion chamber volume, it becomes necessary to know exactly how much a cylinder head must be milled for a 1cc (cubic centimeter) reduction. Continue reading “Cylinder Head Milling for a 1cc Reduction”
Over the years I have heard a variety of numbers from 2% to 10% for what a point in compression ratio is worth in regards to horsepower output. The ten percent value obviously sounded a bit exaggerated while the two percent value sounded a bit on the small side. Continue reading “Milling Heads for a Horsepower Gain”
I’ve always said, “If it spins, then it likely needs balancing”. When going for that last bit of detail in blueprinting an engine, then camshaft balancing comes into play. How much is it worth you ask? Continue reading “Camshaft Balancing”
Here is a list of items that are contributing factors for a flat tappet camshaft (new or otherwise) and/or lifters to experience a premature failure. Continue reading “Camshaft and Lifter Failure Causes”
I recently had the opportunity to assemble a pair of Ford Y-Block engines that were very similar to each other and then dyno test each. Both engines had the same bore and stroke, the same camshaft grind, and the final static compression ratio (SCR) on each was very similar. Continue reading “A Tale Of Two 330 Inch Y-Blocks”
While Glen Henderson’s 337” Y was on the dyno, a variety of two inch tall carburetor spacers were tested. The results were more than interesting and re-enforces why different combinations of parts are tested. The baseline test for this was no spacer and then there were three different styles of 2” tall spacers put into place and evaluated. Continue reading “Carburetor Spacer Testing”