I have R-M built 583” BBC in one car and a 588” R-B built Mopar motor in other. One makes 150 hp more than the other and was $8000.00 cheaper. The Mopar is a wedge head, both are aluminum blocks, the Mopar is an Indy block. Bet you can’t guess which one is which. Jim.

Last edited by BANDIT; 12/19/19 04:27 PM.
64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.35@165. 4400 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
242" Mullis Dragster. 6.90@ 200mph