360 J heads
RPMS = $1430.00 + springs to match cam $90 + Check/correction $300 + mill ot reduce chamber to 60cc ($110) + performance head gaskets for aluminum heads $90 = $2020.00 ready to run on a specific engine. I am running the RPMs because they are a known quantity as of right now. I'm seeing mixed numbers on the LAx/MAx heads and I dont feel comfy with running them just yet. The majority of posted numbers, which are still few and far between, do not have the RHS heads much better if any without work than the RPMs or Magnum RPMs. I think they have great potential, but it's still early. Doing some quick numbers ona set of RHS LAXs: $670.32 + Stainless valves, retainers, locks(Mancini) $160 + positive seals $15 + springs $90 + performance valve job(includes final assembly) $450 + cutting spring seats $50 + milling to get chambers to 60cc $110 = $1545.32 So using my shop and equal prep the RHS LAXs are $474.68 less, but at least $100 will be for shipping, so $374, and the heads are close to 62lbs each assembled. Flow numbers for both OOTB are very similar peaking with RPMs around 240 and the RHSs around 250 if the available flow numbers are averaged and limited to a test up to .550 which is the highest I need to concern myself with on this engine. The total true difference between either of them ready to be installed on someone's engine is about $375 and at least 40lbs of weight. Cheaper, but not much, and not much for testimonials.