SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: eliminatethis on November 30, 2010, 02:13:15 PM

Title: cam ?
Post by: eliminatethis on November 30, 2010, 02:13:15 PM
I have a EP4616A hydraulic roller cam 112 centerline 216/int 228/exh @ .050w/1.7 -1 rockers .501/int and .510/exh the engine is a gen 6 454+ .030 10-1 comp. rec port stock heads with new double springs and damper valve springs. basset headers light on the h20. single quad tunnel ram and msd. looking to go into a sst jet 1979 should I trash that cam or use it. my wallet is saying use it my heart says chunk it. any imput would be nice
Title: Re: cam ?
Post by: crewchief22 on November 30, 2010, 10:49:39 PM
That is a very small cam and will definately limit performance and top speed  :thumbdown:
Title: Re: cam ?
Post by: enginedoctor on November 30, 2010, 11:29:50 PM
86 that cam...and if you don't ....make sure spring seat pressure will work along with the rest of your valve train...just my thoughts.
Title: Re: cam ?
Post by: GT Jets on November 30, 2010, 11:40:26 PM
That camshaft is what I would call an "RV" camshaft...It will make respectable torque at the bottom end (not required on a jet pump) and will "fizzle out" at the top...Almost the exact opposite of what is required. :thumbdown:

Perfect cam for the tow vehicle though... :thumbup:

GT
Title: Re: cam ?
Post by: enginedoctor on December 01, 2010, 12:23:26 AM
Go with a mech.cam...follow the card that comes with it for specs. :thumbup:
Title: Re: cam ?
Post by: eliminatethis on December 01, 2010, 04:59:02 AM
Go with a mech.cam...follow the card that comes with it for specs. :thumbup:
your saying mech. roller not hydr. roller ? not flat tappet right
Title: Re: cam ?
Post by: SS-201 on December 22, 2010, 02:51:44 AM
Hydraulic is fine unless balls out engine. that cam will run in the 5000-5500 range, however it is possible to turn, remember torque and HP meet at 5250 RPM. the cam will depending on its specs can make more hp .
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