Cam motion custom grind questions..
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Cam motion custom grind questions.. Talked with cam motion and they recomended this cam.
225/235 duration
558" intake 536" exhaust
114LSA
He said something about installing it at 110 straight up!
Hows this cam sound?
Its for my 409 Lt4 Impala
<small>[ October 24, 2002, 09:33 PM: Message edited by: Mike TexaSS ]</small>
225/235 duration
558" intake 536" exhaust
114LSA
He said something about installing it at 110 straight up!
Hows this cam sound?
Its for my 409 Lt4 Impala
<small>[ October 24, 2002, 09:33 PM: Message edited by: Mike TexaSS ]</small>
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From: Houston
Re: Cam motion custom grind questions.. maybe im confused, but how the heck did you get that large of an intake lift with such a small duration but vice versa with the exhuast. i could be mistaken but i have never seen a cam with a split pattern duration have a reverse split lift pattern.
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From: Houston
Re: Cam motion custom grind questions.. i stand corrected, i have now seen 2 <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Re: Cam motion custom grind questions.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TAraysr:
<strong> i could be mistaken but i have never seen a cam with a split pattern duration have a reverse split lift pattern.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm no cam guru (actualy doing some reading on this since thats one of my weakest points), and I usually talk to people that know better then me.... but heres mine regardless.
I/E
.644/.614 lift
250 /256 dur @ .050"
Kurtis
<strong> i could be mistaken but i have never seen a cam with a split pattern duration have a reverse split lift pattern.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm no cam guru (actualy doing some reading on this since thats one of my weakest points), and I usually talk to people that know better then me.... but heres mine regardless.
I/E
.644/.614 lift
250 /256 dur @ .050"
Kurtis
Re: Cam motion custom grind questions.. Make that 3 <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Duration and lift are seperate from each other (in a way). From what I have seen in others car and my own, street cars really benifit (in more ways than just power) with cams having shorter duration with larger lift. A larger lift just means that the lobe is more aggressive (faster valve acceleration).
Also, you cant compare solid roller grinds to a hyd roller grind. A solid roller at a given spec will act like a hyd roller with 10-15 degrees less duration.
My cam (solid roller): Cam motions 247/250 .658.659 112
BTW, I really like cam motions stuff <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Jason
Duration and lift are seperate from each other (in a way). From what I have seen in others car and my own, street cars really benifit (in more ways than just power) with cams having shorter duration with larger lift. A larger lift just means that the lobe is more aggressive (faster valve acceleration).
Also, you cant compare solid roller grinds to a hyd roller grind. A solid roller at a given spec will act like a hyd roller with 10-15 degrees less duration.
My cam (solid roller): Cam motions 247/250 .658.659 112
BTW, I really like cam motions stuff <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Jason
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From: Houston
Re: Cam motion custom grind questions.. i never re-read my message. i understand lift and duration, how they are seperate, how they affect performance, and how they relate to eachother. i meant to just comment that i have never actually seen or read about one. now im very curious as to the benifits of such a cam. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> if anybody has info regarding to the performance of these cams in reference to the typical small block cam, i would be very happy to read it. the original message was supposed to be a "why" instead of a "how" in teh very first line. i apologize for the confusion and will re-read my messages from now on <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Re: Cam motion custom grind questions.. TAraysr, no problem on the wording <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
The reason *I* like shorter duration/bigger lift cams for street cars is for 2 reasons: First being the fact that they will provide you with better driveability....duration (specifically overlap) is what will kill driveability. Secondly, the increase in lift will hang the valve open for longer (power). Also, the shorter duration keeps the powerband out of the sky, giving you the needed torque that a street car needs.
However, that does not come without trade offs. You need a pretty stout valvetrain to handle the extra lift and valvespring wear will increase causing the need for changing them more often. Lifter wear (although not to a great extent) will also rise.
Jason
The reason *I* like shorter duration/bigger lift cams for street cars is for 2 reasons: First being the fact that they will provide you with better driveability....duration (specifically overlap) is what will kill driveability. Secondly, the increase in lift will hang the valve open for longer (power). Also, the shorter duration keeps the powerband out of the sky, giving you the needed torque that a street car needs.
However, that does not come without trade offs. You need a pretty stout valvetrain to handle the extra lift and valvespring wear will increase causing the need for changing them more often. Lifter wear (although not to a great extent) will also rise.
Jason
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From: Houston
Re: Cam motion custom grind questions.. interesting. i can see the benifits of such a setup but im sure it would all depend on the application for which you are pursueing as to what specs you would want. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> might have to look deeper into this as it seems my motor may have went south a few days ago and will prolly be building a small stroker which would give me another reason to swap cams again <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Re: Cam motion custom grind questions.. Hey Guys,
I have a 93 Z28 too and I'm interested in stepping up to a solid roller. What is the website address for Cam Motions ? What type of heads are you guys running with those solid rollers ? AFR's 2.05/1.60's or LT4 heads ported out to the max or what? Fill me in cause this will be my next step. <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
<small>[ November 01, 2002, 08:48 PM: Message edited by: Mac 2002 SS ]</small>
I have a 93 Z28 too and I'm interested in stepping up to a solid roller. What is the website address for Cam Motions ? What type of heads are you guys running with those solid rollers ? AFR's 2.05/1.60's or LT4 heads ported out to the max or what? Fill me in cause this will be my next step. <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
<small>[ November 01, 2002, 08:48 PM: Message edited by: Mac 2002 SS ]</small>
Re: Cam motion custom grind questions.. Cam Motions does not have a website and I dont have their phone number right here....I can get it though if you want.
I run AFR 210 LT4s on my car. Porting/sleeving was done by B&B Racing in California, valve sizes are 2.1/1.625"...kinda on the large size, but against my thoughts they wanted to use valves that big. I trust them, and the car is running well (125.75mph in the 1/4 on motor).
Let me know if you have any other questions.
Jason
I run AFR 210 LT4s on my car. Porting/sleeving was done by B&B Racing in California, valve sizes are 2.1/1.625"...kinda on the large size, but against my thoughts they wanted to use valves that big. I trust them, and the car is running well (125.75mph in the 1/4 on motor).
Let me know if you have any other questions.
Jason
Re: Cam motion custom grind questions.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JasonShort:
<strong>Cam Motions does not have a website and I dont have their phone number right here....I can get it though if you want.
I run AFR 210 LT4s on my car. Porting/sleeving was done by B&B Racing in California, valve sizes are 2.1/1.625"...kinda on the large size, but against my thoughts they wanted to use valves that big. I trust them, and the car is running well (125.75mph in the 1/4 on motor).
Let me know if you have any other questions.
Jason</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hey Jason, email me all the information you can about cam motion. I'm wanting to run 11.5's or better on motor. Also ,tell me about other choices of heads that will support these solid rollers from cam motion. Your LT4 valves are "HUGE". I don't know if I need that much ,but I'm open to suggestions <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> . My email addy is macsvh@mindspring.com or you can email me a macholmes70@yahoo.com Thanks for any infomation that you can pass on. <img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" />
<small>[ November 01, 2002, 09:04 PM: Message edited by: Mac 2002 SS ]</small>
<strong>Cam Motions does not have a website and I dont have their phone number right here....I can get it though if you want.
I run AFR 210 LT4s on my car. Porting/sleeving was done by B&B Racing in California, valve sizes are 2.1/1.625"...kinda on the large size, but against my thoughts they wanted to use valves that big. I trust them, and the car is running well (125.75mph in the 1/4 on motor).
Let me know if you have any other questions.
Jason</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hey Jason, email me all the information you can about cam motion. I'm wanting to run 11.5's or better on motor. Also ,tell me about other choices of heads that will support these solid rollers from cam motion. Your LT4 valves are "HUGE". I don't know if I need that much ,but I'm open to suggestions <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> . My email addy is macsvh@mindspring.com or you can email me a macholmes70@yahoo.com Thanks for any infomation that you can pass on. <img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" />
<small>[ November 01, 2002, 09:04 PM: Message edited by: Mac 2002 SS ]</small>
Re: Cam motion custom grind questions.. my Cam Motion solid roller had more intake lift than exaust lift too, and so did Jordon Musser's. his car went 130mph NA in heavy street form, and i just went 10s NA with no tuning, so i would think they know what they are doing <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
as for heads, i just have some LT4s with "little" 2.00/1.60 valves. there is also ALOT less material taken out of my runners than on my buddy's MTI Stage 3 LT4 heads
<small>[ November 06, 2002, 08:36 AM: Message edited by: chevyguy3 ]</small>
as for heads, i just have some LT4s with "little" 2.00/1.60 valves. there is also ALOT less material taken out of my runners than on my buddy's MTI Stage 3 LT4 heads
<small>[ November 06, 2002, 08:36 AM: Message edited by: chevyguy3 ]</small>
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From: Yakima, WA
Re: Cam motion custom grind questions.. If anyone may be interested, my Solid mentioned above will be available for sale in the next couple weeks.
Brand New, Installed, Never fired. Billet Core.
.646/.614" lift
250/256 dur @ .050
112 LS.
Decided to change cams just before I stab the engione. <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />
Brand New, Installed, Never fired. Billet Core.
.646/.614" lift
250/256 dur @ .050
112 LS.
Decided to change cams just before I stab the engione. <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />
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From: Chi-Town
Re: Cam motion custom grind questions.. when i was building my dart 406 nitrous motor...
cam motion speced me out:
274/282 @ .050
.704/.648 1.6rr
112lsa, 108ic
i asked about why the large intake lift cuz i always heard more exhaust. They told me thats mostly on duration....he said since the intake flows more air than the exhaust you want as much air/nitrous crammed in the chamber as possible
my friends nitrous'd 377 also was similar:
292/304 @.050 (no typo)
.737/.668
112lsa, 110ic
i dont know who did his cam. I do know in a 3000lb nova on motor it went 10.20s and on a 250 fogger it went 9.20s draggn' the bumper 330 feet
cam motion speced me out:
274/282 @ .050
.704/.648 1.6rr
112lsa, 108ic
i asked about why the large intake lift cuz i always heard more exhaust. They told me thats mostly on duration....he said since the intake flows more air than the exhaust you want as much air/nitrous crammed in the chamber as possible
my friends nitrous'd 377 also was similar:
292/304 @.050 (no typo)
.737/.668
112lsa, 110ic
i dont know who did his cam. I do know in a 3000lb nova on motor it went 10.20s and on a 250 fogger it went 9.20s draggn' the bumper 330 feet
Re: Cam motion custom grind questions.. it seems most of you guys are running little more cubic inches than me. (357 LT1). Whats size solid roller would you guys suggest for me ? Remember ,the car is not my daily driver .
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From: Yakima, WA
Re: Cam motion custom grind questions.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JasonShort:
<strong>Hey Mac, sorry i didnt get back to you yet with Cam Motions info...I cant seem to find their phone number.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Cam Motion....(225)926-6110
<strong>Hey Mac, sorry i didnt get back to you yet with Cam Motions info...I cant seem to find their phone number.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Cam Motion....(225)926-6110
Re: Cam motion custom grind questions.. Hey Mac, sorry i didnt get back to you yet with Cam Motions info...I cant seem to find their phone number.
When/if you call them, one of the questions they will ask you is what is the car for (ie, street/strip, street only, race only, etc..). Some people think that they go a bit small on their cams (duration wise) so they tell them that it is a "race only" car when in actuality it would be a street/strip setup. IMO that is ok since alot of guys can live with a choppy idle and loss of driveability for max power. However, this is not to say that their recommended grind (for the street/strip cars) is not too "small". Their cams make very good power. In fact, I actually went to a smaller (duration) cam for my setup this year and like it better! I love the great driveability, and it makes great power.
Last year I had a GTP 250/256 solid roller in my 355ci LT1 setup. It was alright, idle was choppy but liveable, and made decent power. Now though I have a cam motions 247/250 .658/.659 112 in my 396 (more cubes even) and it is making great power...not to mention it is like driving a stock LT1 with a HOT cam (driveability wise).
IMO for street/strip cars....slightly smaller duration with big lift is the way to go. Usually that is what you get with cam motions grinds <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
So, you can run a 25x/25x cam in your 357, but I would be willing to bet that a 24x/24x would make about the same power (as long as it had .61x/.61x+ lift....and you would get better driveability (something that I thought I didnt care about in the past, but really did now that I have it back).
Jason
When/if you call them, one of the questions they will ask you is what is the car for (ie, street/strip, street only, race only, etc..). Some people think that they go a bit small on their cams (duration wise) so they tell them that it is a "race only" car when in actuality it would be a street/strip setup. IMO that is ok since alot of guys can live with a choppy idle and loss of driveability for max power. However, this is not to say that their recommended grind (for the street/strip cars) is not too "small". Their cams make very good power. In fact, I actually went to a smaller (duration) cam for my setup this year and like it better! I love the great driveability, and it makes great power.
Last year I had a GTP 250/256 solid roller in my 355ci LT1 setup. It was alright, idle was choppy but liveable, and made decent power. Now though I have a cam motions 247/250 .658/.659 112 in my 396 (more cubes even) and it is making great power...not to mention it is like driving a stock LT1 with a HOT cam (driveability wise).
IMO for street/strip cars....slightly smaller duration with big lift is the way to go. Usually that is what you get with cam motions grinds <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
So, you can run a 25x/25x cam in your 357, but I would be willing to bet that a 24x/24x would make about the same power (as long as it had .61x/.61x+ lift....and you would get better driveability (something that I thought I didnt care about in the past, but really did now that I have it back).
Jason
Re: Cam motion custom grind questions.. Thanks Jason and KTamez. I'm going to give them a call first thing monday morning. 1 more question, what kind of lobe separation do you guys recommened ? I'm thinking 110. Thanks again.
Re: Cam motion custom grind questions.. I'm running a cam motion solidin my 355. 255/263 657/628 on a 110LS. It surges alittle below 1800 but is still very drivable in my opinion. A daily driver...no..but a fun weekend car. The idle is choppy but not as bad as you would think with the size of the cam.