We decided to flow the intake and exhaust runners of several popular factory cylinder heads and then port an intake and exhaust runner to compare the difference. We'll be performing our testing on the ...

If your engine's ever encountered severe overheating or head gasket failure, there's a good chance the cylinder head or block is warped. Unless you're Superman, there is no physical way to visually ...

A long time ago at racetracks far, far away, T-shirts used to say "Old Chevys never die, they just go faster." Pictured below was a wheelstanding '55 coupe with a straight axle and flames billowing ...

SAE Transactions, Vol. 104, Section 3: JOURNAL OF ENGINES (1995), pp. 2430-2436 (7 pages) A single-cylinder, two-valve engine was operated with independent cooling circuits for the engine block and ...

In the 1980s General Motors shifted away from small holes in the cylinder head and pushrod guide plates instead to what they refer to as “guided” rocker arms. These stamped rocker arms use two small ...

That's the rule of classic Triumphs (ed note: classic anything). No matter what part of the car you are working on, there will always be one nut, one bolt or one stud that refuses to budge. Or one of ...

Toyota offers GR Heritage Parts for the 2000GT, the Mk3 and Mk4 Supra, AE86, plus 40-, 60-, 70-, and 80-series Land Cruisers. A lot of the parts are seemingly insignificant—gauges, hoses, gaskets, ...

Quality engine components are expensive. Especially the trick "hi-po" parts that are usually found reciprocating in a hot rod engine. That's why it's critical when assembling your engine that you get ...