Need a new cam for my motor (355 sbc 12:1)
Thread Starter
Le Mans Master
Joined: Nov 2004
Posts: 6,434
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St. Jude Donor '07
Need a new cam for my motor (355 sbc 12:1)
I was thinking maybe this cam. I have 1.6 rockers and It is going to be a solid roller.
Voodoo Mechanical Roller Camshaft
Lift: .555''/.566'' ( roughly .590/.600 )
Adv. Duration: 261°/267°
Duration @ .050'': 231°/237°
RPM Range: 2500-6500
This brings up another question. Is it easy to convert hydraulic rollers to a solid roller?
Voodoo Mechanical Roller Camshaft
Lift: .555''/.566'' ( roughly .590/.600 )
Adv. Duration: 261°/267°
Duration @ .050'': 231°/237°
RPM Range: 2500-6500
This brings up another question. Is it easy to convert hydraulic rollers to a solid roller?
Race Director
Joined: Apr 2000
Posts: 17,676
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
You can run 12:1 CR on the street but you need a cam in the 260-270degs @ .050" to run on pump gas. It will be a little soggy on the bottom end but should really start to scream at 7500 RPM 
I would pick a cam first then match the compression ratio to the cam unless the shortblock is already built 
I would pick a cam first then match the compression ratio to the cam unless the shortblock is already built
Team Owner
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by Kalway
Ick, go hydraulic roller. Solid requires too much attention.
Team Owner
Joined: Jul 2001
Posts: 182,997
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
I like my cam. Don't have the part number handy but it is a Comp Cams solid roller cam with .630 lift (.672 with1.6 rockers) and 264/270 degrees .050 duration and 300/308 degrees advertised duration and 106 degres lobe separation! Great Cam!!
Safety Car
Joined: Dec 2004
Posts: 4,071
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From: San Diego CA
Originally Posted by GrandSportC3
Not really! If you run stud girdles or shaft rocker arms, little attention is needed.. I checked my lash after 100 drag strip passes and it was close to perfect!
Thread Starter
Le Mans Master
Joined: Nov 2004
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St. Jude Donor '07
I actually go to thinking I want to keep the same cam .550 lift with 1.6 rockers so I don't have to change my springs. Maybe I should just put solid lifters and a cam with more duration so I can go to 7000 rpm. Right now im running a cam with 236* duration @ .50 lift.
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Melting Slicks
Joined: Jan 2004
Posts: 2,672
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From: New Cumberland PA
Originally Posted by 2000FRCZ19
i have a set of heads that are 53.6cc's. that will get you to 12.4 with flat tops.
Drifting
Joined: Sep 2004
Posts: 1,959
Likes: 1
From: North Bend Ohio
Originally Posted by Yellow73SB
58cc(maybe less) with decked block and skinny gaskets. Some where close to 12:1. I doesn't run on 93.
Putting around the backyard isn't too bad but, WOT and 7000 RPM at the top of first gear is NOT the place to find shortcomings in your parts selection.
BigBlockk
Later.....
Thread Starter
Le Mans Master
Joined: Nov 2004
Posts: 6,434
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St. Jude Donor '07
Originally Posted by BigBlockk
What do you mean (maybe less)? If you're going to be pushing 12/1 compression you better "know" what size they are.
Putting around the backyard isn't too bad but, WOT and 7000 RPM at the top of first gear is NOT the place to find shortcomings in your parts selection.
BigBlockk
Later.....
Putting around the backyard isn't too bad but, WOT and 7000 RPM at the top of first gear is NOT the place to find shortcomings in your parts selection.
BigBlockk
Later.....
),l-98 corvette heads ( I say im not sure if there 58cc becuase he may have milled them down. They are also flowed)My twin turbo motor is also coming together
Last edited by Yellow73SB; Nov 28, 2006 at 09:37 PM.
Team Owner
Joined: Apr 2002
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From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
You are probably closer to 11.1 --> 11.5
A good hydraulic roller or mechanical cam.
It never hurts to call crane or comp cams and ask them. It is free.
A good hydraulic roller or mechanical cam.
It never hurts to call crane or comp cams and ask them. It is free.