Re: blower cam what do you guys think of this?
[Re: chrisf]
#3106128
12/28/22 02:37 PM
12/28/22 02:37 PM
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Joined: Aug 2003
Posts: 43,157 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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I would sell the 8:71 to a BB Chevy guy and buy a new 10:71 for your motor The bigger the blower the less RPM you need to turn it to make pressure, the higher you spin the blower the higher the inlet temps will get , IE a 8.71 making 7.0 lbs. of pressure may have a manifold inlet temps. of 180F +, the 10:71 making the same pressure at less blower RPM will have120 to 140 F inlet temps, which can make 50 to 100 HP more at the crankshaft differences. These are examples, not actual results due to the size of the motor, camshaft and induction system type (carbs, EFI, Bug catcher or whatever) feeding the blower differences
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: blower cam what do you guys think of this?
[Re: chrisf]
#3106184
12/28/22 06:43 PM
12/28/22 06:43 PM
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Joined: Jan 2003
Posts: 5,484 SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,484
SoCal
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How much power are you looking for? Cam is a tad off but not enough to warrant buying another one unless it's going to be on kill?
Brian Hafliger
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Re: blower cam what do you guys think of this?
[Re: Clanton]
#3106385
12/29/22 02:13 PM
12/29/22 02:13 PM
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Joined: May 2004
Posts: 12,386 Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,386
Taxes & Virus's R-US, NY
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I sure would like to get more info. IDK how much I can help but I have had a blower with carbs for a while on a 446" w/14# boost. I have a similar motor I am going to order an 871 blower for and run on E85 with carbs this summer.....But I cannot answer your question yet. My engine supposedly made 1200hp at around 20-22psi with an 871 on it.....I can hunt down the cam card if you want to compare... I was going to put a Hemi in it, but I scored this little engine to get a jump start on it....
Last edited by Dragula; 12/29/22 02:16 PM.
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Re: blower cam what do you guys think of this?
[Re: chrisf]
#3106460
12/29/22 06:23 PM
12/29/22 06:23 PM
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Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
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master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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its a street car. maybe once a year to the track but more of a street car. around 8 lbs boost. shooting for 800hp on pump gas which should be no problem i wouldnt think. 500" ported -1 iron indy's. indy max wedge port blower intake 2- 850 blower holleys car has been blown (440-6-71) for 10+ years but was time to update. its my buddies car https://youtu.be/gCHHBltpkGA I just tested some underdrive to 10%UD and was getting 12# boost on my 446" .630 lift roller on ported Victor heads so that may be a starting point with and 8-71 for you.
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Re: blower cam what do you guys think of this?
[Re: Dragula]
#3106462
12/29/22 06:25 PM
12/29/22 06:25 PM
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Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
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master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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I sure would like to get more info. IDK how much I can help but I have had a blower with carbs for a while on a 446" w/14# boost. I have a similar motor I am going to order an 871 blower for and run on E85 with carbs this summer.....But I cannot answer your question yet. My engine supposedly made 1200hp at around 20-22psi with an 871 on it.....I can hunt down the cam card if you want to compare... I was going to put a Hemi in it, but I scored this little engine to get a jump start on it.... I am looking forward to you getting the car running.
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Re: blower cam what do you guys think of this?
[Re: chrisf]
#3106659
12/30/22 01:50 PM
12/30/22 01:50 PM
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Joined: Mar 2006
Posts: 9,835 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,835
MI, usa
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its a street car. maybe once a year to the track but more of a street car. around 8 lbs boost. shooting for 800hp on pump gas which should be no problem i wouldnt think. 500" ported -1 iron indy's. indy max wedge port blower intake 2- 850 blower holleys car has been blown (440-6-71) for 10+ years but was time to update. its my buddies car https://youtu.be/gCHHBltpkGA What has it run in it's current configuration? Doug
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Re: blower cam what do you guys think of this?
[Re: Dragula]
#3106817
12/30/22 11:12 PM
12/30/22 11:12 PM
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Joined: Mar 2005
Posts: 3,021 NY
B1duster
master
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master
Joined: Mar 2005
Posts: 3,021
NY
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I sure would like to get more info. IDK how much I can help but I have had a blower with carbs for a while on a 446" w/14# boost. I have a similar motor I am going to order an 871 blower for and run on E85 with carbs this summer.....But I cannot answer your question yet. My engine supposedly made 1200hp at around 20-22psi with an 871 on it.....I can hunt down the cam card if you want to compare... I was going to put a Hemi in it, but I scored this little engine to get a jump start on it.... What block is it ? What’s in it ? If you find cam card please post pic. Thanks
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