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Re: why would a stock street hemi have only 5in vacuum ?
[Re: Teamx]
#1533369
12/01/13 03:03 AM
12/01/13 03:03 AM
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Joined: Aug 2003
Posts: 43,195
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
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Quote:
It depends on what you are trying to acheive, The OP stated this is a resto car so ET at the track may not be his main consideration. A cam with around 220>225 @ .050 on 110>112 lobe seperation installed 2 to 4 degrees advanced will give a nice stong vaccum signal to the carbs enhancing tuning and also make plenty of vaccum to operate the power brakes.Oh and it wont burn your eyes out as much as a tight lobe cam! 
I've never seen Eyeballs damaged by camshaft lobe centers, ever  Rich mixtures are another subject entirely  Carbs. may need modifying, tuning, when you change any of the stock parts to non stock parts, just like adding headers usually requires leaning down the carbs on all the pertinent circiuts, idle, transistion, main and sometimes the secondary jetting also  That is if you want the best results from your changes   You can lean the idle circuits down two diffeent ways, restrict the idle fuel feed or open up the idle bleeds to reduce the vacume signal too the idle circuits, sometimes doing both is the best answer 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: ogopogo]
#1533371
12/01/13 01:11 PM
12/01/13 01:11 PM
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Joined: Mar 2006
Posts: 9,841
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,841
MI, usa
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Quote:
I dont think this trailer queen will ever see over 4000 rpm anyway unless the next owner actually drives it.I can use the comp 292 in the engine Im building for my challenger (4 speed car w 4:10's)
The OP stated this is a resto car so ET at the track may not be his main consideration.
My point exactly
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: dvw]
#1533372
12/02/13 05:33 PM
12/02/13 05:33 PM
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Joined: Oct 2003
Posts: 1,794
BC Canada
ogopogo
OP
top fuel
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OP
top fuel
Joined: Oct 2003
Posts: 1,794
BC Canada
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A quick update,I just broke in the new cam and the car is running fantastic,its a whole different car now.Idles nice with a slight lope and its making 12in vacuum at idle. I did install the cam 4 deg advanced(at 103), and the moral of the story is dont install a comp 292 cam,4 degrees retarded,in your bone stock,auto trans,3:23 geared hemi car! Thanks to everyone who helped me out! 
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: ogopogo]
#1533374
12/02/13 05:51 PM
12/02/13 05:51 PM
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Joined: Jan 2003
Posts: 3,103
Phila Pa
scatpacktom
master
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master
Joined: Jan 2003
Posts: 3,103
Phila Pa
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Quote:
A quick update,I just broke in the new cam and the car is running fantastic,its a whole different car now.Idles nice with a slight lope and its making 12in vacuum at idle.
I did install the cam 4 deg advanced(at 103), and the moral of the story is dont install a comp 292 cam,4 degrees retarded,in your bone stock,auto trans,3:23 geared hemi car!
Thanks to everyone who helped me out!
AND THAT FOLKS IS HOW HEMI'S BECOME DUDS
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: RUNCHARGER]
#1533376
12/03/13 12:14 AM
12/03/13 12:14 AM
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Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms
Mr Wizzard
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Mr Wizzard
Joined: Jan 2003
Posts: 42,714
Spokane Washington
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Quote:
A quick update,I just broke in the new cam and the car is running fantastic,its a whole different car now.Idles nice with a slight lope and its making 12in vacuum at idle.
I did install the cam 4 deg advanced(at 103), and the moral of the story is dont install a comp 292 cam,4 degrees retarded,in your bone stock,auto trans,3:23 geared hemi car!
Thanks to everyone who helped me out!
Great news!
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: Cab_Burge]
#1533377
12/03/13 12:21 AM
12/03/13 12:21 AM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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Quote:
Isn't it amazing the differences a small change like that can make   How bad do the rear tires spin now
It's far from a SMALL change but NOT unexpected.
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: ogopogo]
#1533378
12/03/13 12:38 AM
12/03/13 12:38 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
A quick update,I just broke in the new cam and the car is running fantastic,its a whole different car now.Idles nice with a slight lope and its making 12in vacuum at idle.
I did install the cam 4 deg advanced(at 103), and the moral of the story is dont install a comp 292 cam,4 degrees retarded,in your bone stock,auto trans,3:23 geared hemi car!
Thanks to everyone who helped me out!
I'm sure the cam timing was suggested to check... but
was it degreed when you installed the cam(I dont recall)
or was it the timing pointer was moved... which shouldnt
have changed the cam timing but would have on spark
timing.... anyways.... glad you found your lost
power and vac
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: MR_P_BODY]
#1533379
12/03/13 09:34 PM
12/03/13 09:34 PM
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Joined: Oct 2003
Posts: 1,794
BC Canada
ogopogo
OP
top fuel
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OP
top fuel
Joined: Oct 2003
Posts: 1,794
BC Canada
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Quote:
How bad do the rear tires spin now
Cmon Cab,this is an all #s matching low mile restored 71 hemi car,it is much too rare valuable etc etc to be spinning the tires.it is for static display use only !!
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Seriously though,it spins 'em real good now !
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: ogopogo]
#1533381
12/03/13 09:47 PM
12/03/13 09:47 PM
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Joined: Jan 2004
Posts: 8,273
fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,273
fredericksburg,va
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Quote:
Quote:
How bad do the rear tires spin now
Cmon Cab,this is an all #s matching low mile restored 71 hemi car,it is much too rare valuable etc etc to be spinning the tires.it is for static display use only !!
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.Snow tires???
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Seriously though,it spins 'em real good now !
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: ogopogo]
#1533384
12/06/13 11:51 AM
12/06/13 11:51 AM
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Joined: Jan 2004
Posts: 8,273
fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,273
fredericksburg,va
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Quote:
Ha ha,dont need the snow tires yet but it is getting chilly here now!
these motors LOVE cold air!
Chilly??? Looks like snow on the ground now lol. 
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Re: why would a stock street hemi have only 5in vacuum ?
[Re: ogopogo]
#1533385
12/06/13 12:22 PM
12/06/13 12:22 PM
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Joined: Nov 2013
Posts: 595
Nashville, Tennessee
Tempest
mopar
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mopar
Joined: Nov 2013
Posts: 595
Nashville, Tennessee
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Quote:
Quote:
How bad do the rear tires spin now
Cmon Cab,this is an all #s matching low mile restored 71 hemi car,it is much too rare valuable etc etc to be spinning the tires.it is for static display use only !!
.
.
.
.
.
.
.
.
.
.
.
.
.
..
.
.
.
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.
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Seriously though,it spins 'em real good now !
Please tell me you washed all that salt off after the drive??? You can see it on the road.
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