Originally Posted by AndyF
Originally Posted by Brad_Haak
I don't think people realized the 337 was any good until about the same time MP decided to quit making them. I don't know what they sold for new "way back when", but popular used BB Mopar intakes seem to be bringing good money these days.


That was back when Zippy was still working at MP. They killed the 337 and then he talked them into bringing it back. I did some dyno tests with it for a magazine article and made really good power. They sold a few more after that and then killed it again. They really just didn't want to sell parts like that anymore no matter how good they were.


I think Mopar Performance did a lousy job of marketing the 337 intake. I looked at it for years wondering if it would fit a 440 with MW heads. I wasn't willing to buy one to find out if that was the case. Andy finally bought one and published the results. I snagged one before they disappeared completely. Thanks to Andy for buying one and letting everyone know what it was.

Floyd Lippencott IV