sparky24

I need to order a cam for my shortblock ASAP and im really thinking about just going with the crane cam 132561 which is the stock mercruiser 420 camshaft.

Specs right now are:

Holley 800
gm forged crank
gm forged rods
gm forged pistons
mark v 454 block stock bore
420 intake manifold
stainless marine exhaust full length risers to transom
Heads are up in the air but possibly 188 rect ports w/ maybe port work
compression ratio is looking like 9.25ish with 118cc chamber heads


If anyone has any experience with camshafts on a setup like this i would appreciate some input, from what i have read i think my best bet is probably that 420 cam or possibly something with a little less lobe seperation but i DO NOT want to have to worry about reversion

Thunderstruck27

Just call Bob Madea of Marine Kinetics...

sparky24

i dont like to call someone if i have no intention of buying something from him

sparky24

I emailed him a few weeks ago, got no response

1BIGJIM

iTrader: (1)

What he charges for custom cams is cheap and worth every penny.
Also go to a roller cam, flat tappet are a thing of the past.
Just my 2 cents

stickman811

From what I understand, it costs about $1500.00 more to convert a Flat Tappet to Roller Cam than it does an 88 and newer Roller Ready Block. Any truth to this in Marine Engines as opposed to Hot Rod Small Blocks??

1BIGJIM

iTrader: (1)

About $1,200 for any block, lifters, cam and springs. Moral lifters, good springs, custom cam.
Call Bob!