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One of the most common problems with the small six is blown header gaskets and/or exhaust leaks. However they can be minimized by following proper installation procedures. The use of locking bolts may help, but even then, leaks can and will occur if you don't torque the header flange bolts (or...

Selecting the Proper Valve Springs Valve springs are one of the most critical components of your engine. It is very important to match the camshaft and it's potential RPM range with the correct spring rate. We will attempt to explain it in this article, but first lets go over some valve spring...

How The Stock Load-O-Matic Distributor Works Here is a little clarification on how the "Load-O-Matic" distributor works, along with the infamous "Spark Control Valve" (or SCV). Not only is it important to know how they work, especially if your planning a carb swap, but how they work in...

This tech article is a "work in progress". Information will be added as it becomes available. Over the past few years we've flow tested several Australian 250-2V cylinder heads, as well as our own Aluminum cylinder heads. However we've always wondered how the cast iron "log heads" stacked up...

Being able to "read" a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine's overall operating condition. In general, a light tan/gray color tells you that the spark plug is operating at...

SMALL SIX SPECS - 144/170/200/250ci General Specs YEAR CI Chamber Intake Exhaust Log CC Adv HP Adv TQ 60-64 144 44-51 1.467 1.266 850 90 138 61-65 170 48-53 1.522 1.266 890 105 158 65-72 170 48-53 1.649 1.380 890 105 158 65-69 200 51-53 1.649 1.380...