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4WD K5 Blazer

4WD K5 Blazer and Jimmy Big Block and TH400 Swap

The first generation 1969-72 K5 Blazer and 1970-72 GMC Jimmy are beautiful classic full-size sport utility vehicles. They are functional, easily modified or restored, and have always held a high value of popularity.

One modification some will consider is to swap out the small block Chevy engine for a big block. This swap is fairly straightforward if the desire is to keep the original TH350 or original manual transmission. The swap process goes a bit sideways when someone wishes to deviate from the factory transmissions. One such example is using the TH400 transmission.

GM ZZ4 cylinder head

Understanding Small Block Chevy Cylinder Head Variations

Cylinder head choice for small block Chevy engines can cause problems finding the right exhaust header for the application. The best way to reduce the possibility of problems is to perform a bit of research and ask questions.

RAM Clutches logo

Common Mistakes Made in Single Disc Clutch Set Selection

Please Note This post is shared and written by RAM Clutches from their blog, with a few minor edits by Century Performance Center staff https://www.youtube.com/watch?v=Ok43jjYhxuc Avoid these pitfalls when making your single disc clutch set selection  Previously, we have discussed many of the factors to consider in selecting a clutch for your application. Now let’s […]