Crane Cam 134561 Feedback
09-02-2008, 01:47 PM
#11
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Comp Ratio,...after all my super precise cc'ing 
,...I calclulated an avg static of 9.23 to 1. From what I recall, I think information on the pistons assume at 119cc and 0.00 deck height 10 to 1. But I didn't have zero deck height, and I smoothed the edges of the domes to help control any pre-ignition problems the engine might have.
Again thanks for the help.
,...I calclulated an avg static of 9.23 to 1. From what I recall, I think information on the pistons assume at 119cc and 0.00 deck height 10 to 1. But I didn't have zero deck height, and I smoothed the edges of the domes to help control any pre-ignition problems the engine might have.Again thanks for the help.
Good luck
09-02-2008, 04:12 PM
#12
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The cam used in the 454-420HP is made by Crane. It's specs are about 226-236 duration and .530-.550 lift. It would proably be a better all around cam in this application and it works with stock exhaust. I can't remember the grind no. but it's in their catalog under marine cams.
09-04-2008, 01:00 PM
#13
Be carefull with your cast buttom end! I wouldn´t rew it more than 5200 rpm. I have very good experience with the Part Number: 132561 Grind Number: H-228/312-2S-14 T1.2 (mercruiser 420 cam) You can use your stock exhaust with this cam.
With your small valve size, stock exhaust and cast crank the 134561 cam will be too large and your low end power will suffer.
With your small valve size, stock exhaust and cast crank the 134561 cam will be too large and your low end power will suffer.
09-04-2008, 02:31 PM
#14
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Be carefull with your cast buttom end! I wouldn´t rew it more than 5200 rpm. I have very good experience with the Part Number: 132561 Grind Number: H-228/312-2S-14 T1.2 (mercruiser 420 cam) You can use your stock exhaust with this cam.
With your small valve size, stock exhaust and cast crank the 134561 cam will be too large and your low end power will suffer.
With your small valve size, stock exhaust and cast crank the 134561 cam will be too large and your low end power will suffer.
....MODIFIED ENGINES WITH FREE-FLOWING ABOVE WATER EXHAUST SYSTEMS,....
My exhaust outlets on the hull are below the waterline at idle.
09-04-2008, 02:40 PM
#16
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Exhaust under the water line, stock manifolds, all recipie for breaking an engine when you modify it to much.
Save your money until you can get a good exhaust, then you can afford to do it right. No sense in buying cams twice.
You will alos be able to re- use the piston upgrade and the head upgrade you are using when you upgrade the cam later in life anyway.
09-04-2008, 06:12 PM
#18
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I do not have the stock cam. I bought this boat with a grenaded 502 engine that had been modded. I think the standard engine for this style of boat was a 454 365HP Mag? However, I don't know what the spec are for the stock cam.
FYI,..
I asked Dennis Moore about using his Manifolds on my combo and he suggested a cam with 224/230 @ .050 with a 110 lsa. and IMCO risers. Everything exiting below the waterline at idle.
FYI,..
I asked Dennis Moore about using his Manifolds on my combo and he suggested a cam with 224/230 @ .050 with a 110 lsa. and IMCO risers. Everything exiting below the waterline at idle.
09-04-2008, 08:57 PM
#19
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I do not have the stock cam. I bought this boat with a grenaded 502 engine that had been modded. I think the standard engine for this style of boat was a 454 365HP Mag? However, I don't know what the spec are for the stock cam.
FYI,..
I asked Dennis Moore about using his Manifolds on my combo and he suggested a cam with 224/230 @ .050 with a 110 lsa. and IMCO risers. Everything exiting below the waterline at idle.
FYI,..
I asked Dennis Moore about using his Manifolds on my combo and he suggested a cam with 224/230 @ .050 with a 110 lsa. and IMCO risers. Everything exiting below the waterline at idle.
that 110 ccenter is going to hit pretty hard. There aren't a lot of through hulls that can take a 110 center.
You might want to ask around a little more.
09-05-2008, 06:11 AM
#20
Stock cam is chevrolet #3904359 214* 218* .460" .480" 114 LSA
365 mag cam chevrolet #14096209 224* 224* .500" .500" 115.5 LSA
Make a´search on Classifieds,maby someone has a´good used cam for you. (Cheap)
365 mag cam chevrolet #14096209 224* 224* .500" .500" 115.5 LSA
Make a´search on Classifieds,maby someone has a´good used cam for you. (Cheap)
