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Raised Cam Block...Dumb Q of the day #1576156
02/08/14 10:13 PM
02/08/14 10:13 PM
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Posts: 12,386
Taxes & Virus's R-US, NY
Dragula Offline OP
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Does a raised cam block also have to be a tall deck block? How can I tell a raised deck block from standard?

Ok, maybe that's two dumb questions, but I want my money's worth.


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576157
02/08/14 10:30 PM
02/08/14 10:30 PM
Joined: Apr 2005
Posts: 2,128
Salt Lake City
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camastomcat Offline
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Quote:

Does a raised cam block also have to be a tall deck block? How can I tell a raised deck block from standard?

Ok, maybe that's two dumb questions, but I want my money's worth. [/quote

never heard of a low deck raised cam block, that doesn't mean they don't exist. Call the manufacturer and ask if they made one and how to identify it.

Re: Raised Cam Block...Dumb Q of the day [Re: camastomcat] #1576158
02/08/14 10:50 PM
02/08/14 10:50 PM

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I have not heard of a raised cam low deck, pretty sure they are tall deck blocks.

Re: Raised Cam Block...Dumb Q of the day [Re: ] #1576159
02/08/14 11:59 PM
02/08/14 11:59 PM
Joined: Aug 2006
Posts: 1,613
Deerfield, Ohio
70dusterjohn Offline
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Low deck block limit for crank is 4.25 the whole reason for the raised cam block is to clear 5 in crank ! Low deck verse raised you can tell where the water pump mounts, low deck is almost even with the top of the water pump blocks on the block, raised block would be almost 3/4 in taller at the same spot ! :

Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576160
02/09/14 12:35 AM
02/09/14 12:35 AM
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Posts: 43,157
Bend,OR USA
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Quote:

Does a raised cam block also have to be a tall deck block? How can I tell a raised deck block from standard?

Ok, maybe that's two dumb questions, but I want my money's worth.


Measure the distance between the bottom of the front cam bearing and the upper half of the front main bearing seat on a B or RB to see what it is and go from there Now send me my tip


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Raised Cam Block...Dumb Q of the day [Re: Cab_Burge] #1576161
02/09/14 12:53 AM
02/09/14 12:53 AM
Joined: May 2004
Posts: 12,386
Taxes & Virus's R-US, NY
Dragula Offline OP
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I did not say LOW DECK!!!!

Never mentioned it...


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576162
02/09/14 02:00 AM
02/09/14 02:00 AM
Joined: Jan 2003
Posts: 1,938
Sonora CA
Mopar_Rich Offline
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Quote:

Does a raised cam block also have to be a tall deck block?




Technically ... no. Brad Anderson "big bore" blocks are not considered tall decks (Deck=10.225 +/-) and they are ALL raised cams.

Re: Raised Cam Block...Dumb Q of the day [Re: Mopar_Rich] #1576163
02/09/14 02:10 AM
02/09/14 02:10 AM
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto Offline
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there are other reasons to run a raised cam block besides crank clearence


BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576164
02/09/14 05:58 AM
02/09/14 05:58 AM
Joined: Aug 2003
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Bend,OR USA
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Quote:

I did not say LOW DECK!!!!

Never mentioned it...


My point on mentioning both stock type blocks is neither one is a raised cam block The same timing set and chains and gear drives can be used on both B and RB stock blocks


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576165
02/09/14 12:26 PM
02/09/14 12:26 PM
Joined: Jun 2009
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ky
68roadrunner Offline
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could you not just measure the deck height with a 12" dial caliper to see, or is the engine assembled?

Re: Raised Cam Block...Dumb Q of the day [Re: 68roadrunner] #1576166
02/09/14 01:30 PM
02/09/14 01:30 PM
Joined: May 2004
Posts: 12,386
Taxes & Virus's R-US, NY
Dragula Offline OP
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So if I am looking at an aftermarket block, KB, Indy, etc...And from what everyone is saying, it can be a raised cam, but not neccessarily a raised deck block.

What is the standard deck height of an RB or Hemi? And what is the typical raised deck height of an after market block? The number 10.72 comes to mind...


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576167
02/09/14 04:12 PM
02/09/14 04:12 PM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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Most aftermarket BB blocks are available in a raised cam version.Indys aluminium water blocks are available in raised cam versions from 9.98 to 10.72 deck,their soild blocks is available in raised cam version from 9.98 to 10.820.Many other blocks are available in with a variety of deck measurments.Standard deck height for RB/Hemi is 10.720

Last edited by B G Racing; 02/09/14 04:15 PM.
Re: Raised Cam Block...Dumb Q of the day [Re: bigtimeauto] #1576168
02/09/14 04:16 PM
02/09/14 04:16 PM
Joined: Dec 2005
Posts: 872
NJ
SSDAcuda Offline
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Quote:

there are other reasons to run a raised cam block besides crank clearence




Thats the same thought I had when browsing this thread!!


SS/DA 1924
Re: Raised Cam Block...Dumb Q of the day [Re: SSDAcuda] #1576169
02/09/14 04:34 PM
02/09/14 04:34 PM
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Posts: 5,762
Hot Rod Ridge
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Does a raised cam block take a cam ground difrent? And can it take a roller bearing set up for an oversize cam? And finally does it require a custom lifter location?
Nice post Dragula!



Re: Raised Cam Block...Dumb Q of the day [Re: B G Racing] #1576170
02/09/14 04:47 PM
02/09/14 04:47 PM
Joined: May 2004
Posts: 12,386
Taxes & Virus's R-US, NY
Dragula Offline OP
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Quote:

Most aftermarket BB blocks are available in a raised cam version.Indys aluminium water blocks are available in raised cam versions from 9.98 to 10.72 deck,their soild blocks is available in raised cam version from 9.98 to 10.820.Many other blocks are available in with a variety of deck measurments.Standard deck height for RB/Hemi is 10.720




So standard deck is 10.72, and it sounds like those can be either standard cam location or raised cam, and on top of that, I can get a raised deck, which would definitely have a raised cam, correct?


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Raised Cam Block...Dumb Q of the day [Re: Dragula] #1576171
02/10/14 11:34 AM
02/10/14 11:34 AM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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Quote:

Quote:

Most aftermarket BB blocks are available in a raised cam version.Indys aluminium water blocks are available in raised cam versions from 9.98 to 10.72 deck,their soild blocks is available in raised cam version from 9.98 to 10.820.Many other blocks are available in with a variety of deck measurments.Standard deck height for RB/Hemi is 10.720




So standard deck is 10.72, and it sounds like those can be either standard cam location or raised cam, and on top of that, I can get a raised deck, which would definitely have a raised cam, correct? [/quote

With any block you have to specify machine for raised cam unless the block is cast for raised cam.Most blocks are cast for standard applications.

Re: Raised Cam Block...Dumb Q of the day [Re: FastmOp] #1576172
02/10/14 02:40 PM
02/10/14 02:40 PM
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Posts: 19,363
Las Vegas
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Quote:

Does a raised cam block take a cam ground difrent? And can it take a roller bearing set up for an oversize cam? And finally does it require a custom lifter location?
Nice post Dragula!




No the cam CAN be the same. Yes they can go with larger cores. When you raise the cam the lifter bores do change but they machine them back to the same angle as a non raised cam block. The big killer is cam drive. When you raise the cam the std timing chain, gear drive or belt drive DO NOT work. Jesel for instance get a few hundred more for the cam drive.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Raised Cam Block...Dumb Q of the day [Re: Al_Alguire] #1576173
02/10/14 06:21 PM
02/10/14 06:21 PM
Joined: Jan 2011
Posts: 137
Daytona Beach, FL
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cknight Offline
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Most raised cam blocks have altered lifter bore angles, in order to help restore proper pushrod geometry. The most popular raised cam lifter bank angle (degrees from vertical) is 48 degrees, standard is 45 degrees. There were also early MOPAR Megablocks that had raised cams, havomg 47 degree lifter bank angles for B/RB applications, and 50 degrees for Hemi applications. You need to make sure of what you really have before ordering your camshaft. Regards, Chase

Re: Raised Cam Block...Dumb Q of the day [Re: cknight] #1576174
02/10/14 11:24 PM
02/10/14 11:24 PM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline
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My World Products aluminum block Hemi is a .250 raised cam block . Standard Hemi block height is at 10.720 and my block is 10.720 . As stated above you need a Jesel belt drive [ $1500. ] or a gear drive about $1000. ] a standard timing chain will not work. On a raised cam block the lifter bores are at 48 degrees where as the standard block is 45 degrees. Stock .904 lifter bore . You do need a special cam . My block has the lifter bores bushed and also spread .200 for a 2" center from the stock 1.800 The block was set up for 4 3/4" crank clearance I have a 4.5 bore x 4.5 stroke = 572 ci. What else do you need to know? except what the hell was I thinking when I started this project.


it's ok to butt heads, just don't do it with a butthead
Re: Raised Cam Block...Dumb Q of the day [Re: rowin4] #1576175
02/11/14 12:59 AM
02/11/14 12:59 AM
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IN
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The cam location being standard or raised is decided from cam distance from the crank center line. In the same way the deck height is measured from the crank center line. As stated before the lifter angles will change if you have a raised cam block. But having a raised cam block doesn't necessarily mean you have a tall deck block.

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