GoCiggie31

I am rebuilding my port engine of my 502 carbed 415hp Tmercs and was wondering if anyone has the specs to the oem mercruiser camshaft. Would anyone have a crane part number equivalant or suggestion?

engine in question is serial number 0f077723

trying to match oem stb engine(07077715) and get the boat back in the water to finish up the season


Many Thanks
gociggie

brian41

If it is flat tapit cam I have 2 brand new take outs

kennyo

I have the stock roller out of a 97 502 mag mpi. It looks like new,I'll take $125 for it. I also have all the hardware of the heads.

SB

Go to Bam's site www.mercruiserparts.com , go to engine look up tables, find your engine and it's camshaft part # and then look below. Disclaimer: these are my notes from other sources and being human I am wrong sometimes.


Mag BBC 454/502 Flat Tappet (rect heads)

.004” 296*, 296*
.006” 286*, 286*
.050” 224*, 224*
.200” 130*, 130*
Valve lift with 1.7 .510”, .510”
LSA 115.5
Merc Part#431-9830 / GM#14096209
ICL 114 ATDC
ECL 117 BTDC
GM Part#10185060 (same as above but ground with 5 degrees advance)
ICL 109 ATDC
ECL 122 BTDC


======================================

Merc Mag Roller
Merc# 431-850478 / GM#12551622
.004 300*/ 300*
.006 288*/288*
.050” 225*/225*
.200” 125*/125*
Lift .483”/. 483”
ICL 109*
LSA 115.5*

GoCiggie31

Thank you for the info