![https://www.youtube.com/watch?v=Y5DSviX9Tiw]https://www.amazon.com/Competition-Cams-4790-Sportsman-Degree/dp/B00062Y9U4/ref=sr_1_3?dchild=1&keywords=degree+wheel&qid=1621945301&sr=8-3](https://www.corvetteforum.com/forums/images/misc/amazon_icon.gif){kind=icon}
cam timing
Thread Starter
Advanced
Joined: Oct 2011
Posts: 51
Likes: 2
cam timing
Hey folks,Just wanted to get an idea of how important"degreeing" in a cam is for the street.I have a 383 stroker engine.I'm going to run a mild hyd flat tappet cam.Block has been align honed and deck has been just cleaned up.Just wondering if it's worth the $250.00 to degree the cam in.Doing it myself is a little above my pay grade.Engine is going in my 73 C3.Thanks for any advice.
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
no it is not. it is simple. you are really verifying that it is degreed correctly. well they used to be 20 bucks. https://www.google.com/search?q=moro...hrome&ie=UTF-8 there are printable ones you can mount on cardboard. and probly used on ebay craigs fb...
Racer
Joined: Oct 2001
Posts: 474
Likes: 64
From: Portage La Prairie Manitoba
Hey folks,Just wanted to get an idea of how important"degreeing" in a cam is for the street.I have a 383 stroker engine.I'm going to run a mild hyd flat tappet cam.Block has been align honed and deck has been just cleaned up.Just wondering if it's worth the $250.00 to degree the cam in.Doing it myself is a little above my pay grade.Engine is going in my 73 C3.Thanks for any advice.
Last edited by Engage; May 24, 2021 at 09:36 PM.
Thread Starter
Advanced
Joined: Oct 2011
Posts: 51
Likes: 2
cam timing
Yeah I think you are right.I was yelled at once by an experienced engine builder for not knowing what my cam was degreed at.So since then i've been trying to have it done.I used to live near a guy who would do it for me but i've since moved.A shop near where I live now wants $250 to dial it in.I assembled it with the timing marks straight up.I think i'll let it go at that.Thanks for your suggestion.What cam are you using in your 383?How much compression are you running?I'm going to use a comp cams XE 268 H-10.I should be just under 10:1 compression.I was worried about finding a cam that made enough vacum.I was concerned about headlights and power brakes!Thanks again! Wayne
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
That is a total rip off. A cam like that, just use a decent timing chain setup and install it dot to dot it will be fine.
It will make plenty of vacuum have good manners and make tons of torque.
If you list your location/profile bet theres a member near you who can help for a burger and fries.
It will make plenty of vacuum have good manners and make tons of torque.
If you list your location/profile bet theres a member near you who can help for a burger and fries.
Last edited by cv67; May 25, 2021 at 03:45 AM.
Racer
Joined: Oct 2001
Posts: 474
Likes: 64
From: Portage La Prairie Manitoba
Yeah I think you are right.I was yelled at once by an experienced engine builder for not knowing what my cam was degreed at.So since then i've been trying to have it done.I used to live near a guy who would do it for me but i've since moved.A shop near where I live now wants $250 to dial it in.I assembled it with the timing marks straight up.I think i'll let it go at that.Thanks for your suggestion.What cam are you using in your 383?How much compression are you running?I'm going to use a comp cams XE 268 H-10.I should be just under 10:1 compression.I was worried about finding a cam that made enough vacum.I was concerned about headlights and power brakes!Thanks again! Wayne
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,502
From: Little Rock AR
If you dont want to buy the dial indicator and learn the process then you can skip it. I have the tools and do it myself but unless you want to intensionally alter the cam timing, you can skip it. No way would I pay $250 for someone else to do it.
Remember - "Dot to Dot" is #6 TDC firing position. Both dots at 12:00 noon is #1 TDC firing position.
Remember - "Dot to Dot" is #6 TDC firing position. Both dots at 12:00 noon is #1 TDC firing position.
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
you are building this motor? then you really could use the info gained by degreeing it yourself. it is not so much making sure the cam is right as you KNOWING it is right and what that means. https://www.harborfreight.com/clampi...tor-63656.html cheapest dial indicator out there. acceptable for everything but crankshafts and such.
]https://www.amazon.com/Competition-Cams-4790-Sportsman-Degree/dp/B00062Y9U4/ref=sr_1_3?dchild=1&keywords=degree+wheel&qid=1621945301&sr=8-3" target="_blank">https://www.youtube.com/watch?v=Y5DSviX9Tiw]https://www.amazon.com/Competition-Cams-4790-Sportsman-Degree/dp/B00062Y9U4/ref=sr_1_3?dchild=1&keywords=degree+wheel&qid=1621945301&sr=8-3
so there are inexpensive wheels still. here is 2 minute version. there are half hour long ones too... you may wanna watch one. they go more into details. intake centerline, valve overlap, maybe some mention of reversion, etc.
Last edited by derekderek; May 25, 2021 at 10:07 AM.
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Thread Starter
Advanced
Joined: Oct 2011
Posts: 51
Likes: 2
I ran a Comp cam hr 276 with 10.3 compression.I also ran alumunum heads.Dont know your engine mods.Heads ... intake ... carb.....headers... gears etc. but my 383 had great torque in the lower and mid range.You could likely go with a bit bigger cam.Dont think you would have any vacuum issues til you hit the 280 range on the cam.Highly recommend the dyno tuning too.You would swear mine was fuel injected with its throttle response
Thread Starter
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Joined: Oct 2011
Posts: 51
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Thanks for the info.Yeah I always wanted to learn how to degree a cam myself.I just always had a partner who had the tools and the know how.I kinda wanted to get this project done.I'll think about doing it myself!Thanks
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,502
From: Little Rock AR
Rotate crank 360 degrees and now both dots will be at 12:00 noon - THAT is now #1 TDC Firing position. Drop the distributor in with rotor pointing at #1 tower now. This catches up a LOT of people.
