« on: Nov 20, 2005, 04:42:12 PM »
The 20R head uses a 98 row timing chain with a thick style head and a tall style block.
85' and newer 22R's use a 96 row chain and a thin style head and a short style block.
The 20R head will not work on the later block without milling about 0.140" of material to turn it into a short style head.
I have done this many times, however, your efi intake mainafold will not bolt up so this is not a good chang over for your application.
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1980 Toyota - 1997 3RZ-FE 2.7l Engine, Turbo R151F 4.31:1, Triple Turbo Marlin Crawler Billet (2.28x4.70x4.70) = 1,148:1 Crawl Ratio, Marlin Crawler Twin Stick and Short Throw Shift Kits, 30mm H/D Output Shaft, High Angle Drive Lines, 5.29:1, ARBs, High Pinion Front, 25mm HD Billet High Steer Kit, 6 Pin Locking Hub Bodies, 86+ Wide Rear End, V6 3rd member, Chromolly Axles all around, 37" IROKs with Beadlocks, York onboard air - Rollbar air tank, Premier Power Welder, Marlin Crawler 4" USA-made Leaf Springs, Bilstein Shocks, et cetera....
