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Cam swap
#1682016
10/04/14 06:51 PM
10/04/14 06:51 PM
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Joined: Oct 2014
Posts: 19 NewZealand
downunder
OP
member
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OP
member
Joined: Oct 2014
Posts: 19
NewZealand
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What are your thoughts on a swap from an xe275hl to a xe284h. 446 10.2:1, eddy rpm heads (no port work) and rpm manifold, headers, auto, 3000 stall, 3.23 and 27" tire, 4000lb charger (with me in it). What vacuum could I expect, I need it to run my brakes, do I need to step up on gear, any input appreciated, thanks.
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Re: Cam swap
[Re: downunder]
#1682017
10/04/14 09:54 PM
10/04/14 09:54 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Aye mate. Welcome aboard. I dont know cams so I have no (relevant) info to share but someone will. You might post the specs of the 2 cams. EDIT what do you have now for idle vac?
Last edited by RapidRobert; 10/04/14 10:12 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Cam swap
[Re: downunder]
#1682019
10/05/14 12:12 AM
10/05/14 12:12 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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As is 13 in hg is enough to run your PB as you know. The 248 would be a little more duration/less lift. the numbers are close but I ain't a cam guy at all so I cannot opinionate. And the torque converter is going to tie into this. Is this all street or street/strip & are you after more civil manners or more perf & at what RPM range are you wanting an improvement?.
live every 24 hour block of time like it's your last day on earth
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Re: Cam swap
[Re: downunder]
#1682020
10/05/14 03:21 AM
10/05/14 03:21 AM
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Joined: Mar 2007
Posts: 3,287 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,287
West Coast, USA
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My motor makes 6" to 7" of vacuum on a good day. The power brakes work perfect, 4 wheel discs and the large diameter "thin" factory Bendix booster freshly rebuilt from some place in Washington State.
Sorry, it's been to long for me to remember the name of the place. I had it done 5 to 7 years ago, but there are only a few places that do it.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Cam swap
[Re: goldmember]
#1682022
10/05/14 06:21 AM
10/05/14 06:21 AM
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Joined: Oct 2014
Posts: 19 NewZealand
downunder
OP
member
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OP
member
Joined: Oct 2014
Posts: 19
NewZealand
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The car has been used only on the street, I intend to get into a bit of fun at the strip, nothing serious just a few times a year with other clowns but I still need the car streetable with a moderate gear as that is where it will spent the most time. The present cam has been in there for 3 years and given no problems, although it has always kicked up a bit of noise. I am thinking of getting another rear with lower cogs that I can swap over, no money for a gear vendors. I want the cam to hold on more up top. But I need it to work with the 3.23's also so I don't want to go to big. I have adjustable rockers in 1.5's so maybe a solid? Goldmember, I am open to your suggestions if you care to share them, that's why I posted.
Last edited by downunder; 10/05/14 06:31 AM.
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