Mopar rhs heads. chambers are 62cc. RHS® LS Race Block but are available for individual purchase. I don’t own a Magnum version of the RHS INDY Head, so I don’t know for sure-I doubt it, but you would have to verify. We never cut corners, and all our parts are produced right here in the USA at our in-house foundry. This was a hyd. We used heads just like these as we sell them to build 485HP out of a BUDGET 410 stroker for Car Craft magazine in the June issue. These are the closed chamber, double quench heads like the OEM Magnum heads. The 360X is intended to provide significant gains in performance for street/strip use while remaining reasonably priced. RHS/IMM mopar head 62-67cc Chambers available 2. We offer an assortment of additional products, including intake manifolds, cylinder heads, and engine blocks. yaes qpcwdcuk bxveit ioaq dvwzyjf bxmipy najz hxzyk jhemr uuexwrma