my motors
05-23-2003 | 04:22 PM
#1
Thread Starter
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Joined: Jul 2002
Posts: 375
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From: Hudson Valley
HELP ...my motors
i took the heads off to ck everything out(make sure the mice didn't make a nest in there etc.)
the cylinder walls and pistons look good nice and tight,
so then we pulled the cam out of one, and 5 of the lobes have little flat spots ,not good..... think i'm getting 2 new cams and lifters now..... any help on cam selection would be appreciated....
these motors were supposed to be rebuilt by a local reputable machine shop about 6 - 8 years ago and have been sitting ever since(hence cking for the mouse nest)
the heads i have are 048 casting, they do not look like small peanut ports to me , and the valves look rather large also....
the pistons look to be 30 over as .030 is stamped in the tops
i will take pics of the heads and the pistons to see if someone here can help me figure out what i have....
the cams i was thinking of getting are Part No.: 315-132561 Category: Engines & Parts-Cams & Lifter Kits
Crane PowerMax Cams
Description: PowerMax - Fair idle, standard camshaft for Mercruiser 400, 405, 420 425 HP and 525SC-454 CID engines, applicable to 350, 365, 370 HP mildly modified engines with free flowing above water exhaust
DEG. DUR. @.050 INT / EXH 228
DEG. ADV. DUR. INT / EXH 298
DEG. LOBE SEP. 114
OPEN / CLOSE @.050" CAM LIFT INT /EXH 5 / 43
LASH HOT INT. EXH.000
GROSS LIFT INT. EXH. .530
pics will be up soon, any help will be greatly appreciated
the cylinder walls and pistons look good nice and tight,
so then we pulled the cam out of one, and 5 of the lobes have little flat spots ,not good..... think i'm getting 2 new cams and lifters now..... any help on cam selection would be appreciated....
these motors were supposed to be rebuilt by a local reputable machine shop about 6 - 8 years ago and have been sitting ever since(hence cking for the mouse nest)
the heads i have are 048 casting, they do not look like small peanut ports to me , and the valves look rather large also....
the pistons look to be 30 over as .030 is stamped in the tops
i will take pics of the heads and the pistons to see if someone here can help me figure out what i have....
the cams i was thinking of getting are Part No.: 315-132561 Category: Engines & Parts-Cams & Lifter Kits
Crane PowerMax Cams
Description: PowerMax - Fair idle, standard camshaft for Mercruiser 400, 405, 420 425 HP and 525SC-454 CID engines, applicable to 350, 365, 370 HP mildly modified engines with free flowing above water exhaust
DEG. DUR. @.050 INT / EXH 228
DEG. ADV. DUR. INT / EXH 298
DEG. LOBE SEP. 114
OPEN / CLOSE @.050" CAM LIFT INT /EXH 5 / 43
LASH HOT INT. EXH.000
GROSS LIFT INT. EXH. .530
pics will be up soon, any help will be greatly appreciated
Last edited by XCAV8; 05-24-2003 at 07:53 AM.
05-24-2003 | 09:21 AM
#10
Thread Starter
Registered
Joined: Jul 2002
Posts: 375
Likes: 0
From: Hudson Valley
ok here's what i have
merc 330's 030 over( fresh bearings and rings)
massive bassett offshore water jacketed headers long tube(5")
holly 850's with vac sec
orig q jets carbs
brand new dui distrib's
performer intakes
the above heads, (which i can't seem to idenifiy ???)
048 is the casting # are they large or small ovals??
i need to put these baby's together and get in the water.
40scarab thx (theres one for the cams i picked)
other opinnions Please.....
merc 330's 030 over( fresh bearings and rings)
massive bassett offshore water jacketed headers long tube(5")
holly 850's with vac sec
orig q jets carbs
brand new dui distrib's
performer intakes
the above heads, (which i can't seem to idenifiy ???)
048 is the casting # are they large or small ovals??
i need to put these baby's together and get in the water.
40scarab thx (theres one for the cams i picked)
other opinnions Please.....
