rawellman1216 Posted July 31, 2019 Share Posted July 31, 2019 My inlaws are aging out and they are original owners of a mid 80's ~29' Dolphin with a 20R 4 cylinder engine. RV is in great shape with ~ 80 K miles. The 4 cyl is so under powered that it struggle to go 60mph on level ground and you know the rest on uphill. I'm sure someone has replaced the 4 cyl with a V6, I have seen similar Dolphins that were purchased new with a V6. What is involved in removing the 4 cyl and replacing with a V6. Thanks in advance, Ron Quote Link to comment Share on other sites More sharing options...
Derek up North Posted July 31, 2019 Share Posted July 31, 2019 V6s from the Factory were available from 1989. For V6 swap info you'll probably have better luck on Offroad/4x4 sites/groups. Quote Link to comment Share on other sites More sharing options...
WME Posted August 1, 2019 Share Posted August 1, 2019 The engine compartment was wider in the 89 models compared to the earlier PU. The V-6 3vz has 150hp @ 4800 rpm and 180 lb ft of torque @ 3400 rpm Plan B is to install a 2.7L 4 cylinder 3rz It has 150 hp @ 4800 rpm and 177 lb ft @ 4000 rpm. The T-100 PU is the donor of choice. The "problem" is the intake and exhaust switched sides, but that's still easier than a set of duals. Quote Link to comment Share on other sites More sharing options...
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