Can Magnum sb head guides be drilled out to 11/32" ?
#65731
05/29/08 05:03 PM
05/29/08 05:03 PM
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Joined: Mar 2008
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CHRONiklyDEMONic
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Is 11/32 larger than 8mm? I think so. Could this be done in order to use a chevy valve, for more common locks and retainers?
How hard would it be? $$??
Thanks.
"After a Day filled with burning Rubber, you may find it time to re-tire."
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Re: Can Magnum sb head guides be drilled out to 11/32" ?
[Re: CHRONiklyDEMONic]
#65732
05/29/08 05:14 PM
05/29/08 05:14 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
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I have a friend with some odd heads direct from mopar, they have a part number that was never released. They have 11/32 guids in a magnum casting. He keeps calling them R/Ts but they are just a magnum head with bigger guides.
This is actually a popular mod, run a chevy valve plus .100 and there are tons of springs and retainers. I just wish someone made a plus .100 valve for magnum heads, how hard would that be? They would be lighter and less friction and could run LS1 springs with there behive advantages and lighter retainers. It would be a big help especially for flat tappet cam guys, they could run a little less spring preasure and still have good control of the valve.
Just think of all the guys running EQs, Magnums, R/Ts, Pro-Toplines, aluminum magnums.... that could use 2.02 valves.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Can Magnum sb head guides be drilled out to 11/32" ?
[Re: HotRodDave]
#65733
05/29/08 10:30 PM
05/29/08 10:30 PM
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Joined: Mar 2008
Posts: 292 dead center
CHRONiklyDEMONic
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What are the stock mag head valve dimensions?
1.920in 1.620ex? 8mm stem ______ Length?
Are OOTB EQ's worth more power over stock mag castings?
Who has the best deal on them?
Thanks HRDave
"After a Day filled with burning Rubber, you may find it time to re-tire."
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Re: Can Magnum sb head guides be drilled out to 11/32"
[Re: HotRodDave]
#65736
05/30/08 07:56 AM
05/30/08 07:56 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
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Quote:
I think the lengths are 4.90 and 4.95 but not %100 sure.
EQs will make about %3-%5 more power OOTB and have hardened ex seat inserts. They can also make more max power after porting.
Clearwatercylinderhead on flea-bay is the cheapest I have found. They sell bare ones, they sell assembled like stock, one like stock but with LA intake bolt holes, and one with 2.02 valves and good springs and retainers. I think they call them iron rams and heavy dutys. I think there store name is HeadsByCCH I have bought stuff from them and they do real good getting it shipped fast and not mixin up the orders or anything.
Carolina Machine Engines is cheaper (http://www.cmengines.com/)
I emailed them for a quote, they quoted me $325 each for engienquest 318B's With new OEM valves, keepers, and seals and GM3100 springs/retainers and $425 for them with chev +.1" long valves and springs/retainers good for a hydraulic roller up to .55" lift
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Can Magnum sb head guides be drilled out to 11/32"
[Re: patrick]
#65737
05/30/08 08:35 AM
05/30/08 08:35 AM
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Joined: Feb 2003
Posts: 515 Dayton, Ohio
65cuda
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Dayton, Ohio
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catch me up on those EQ heads does 318b mean they have 360 size ports and use shaft mount rockers? sense i just blew up my 360 and ruined a good 915 j head i might be in the market for a new set. but i already have good SS roller rockers. i would like to find a good head to work with them.
65 Cuda 360,3.23 SG-13.97 @99.4, 88 D100, 2000 Kota Qcab, 71 Duster 416 11.84 @110., 73 Imp ,(2)72 & (1)71 Dart Swingers GarysMocars Legendary Dealer
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Re: Can Magnum sb head guides be drilled out to 11/32"
[Re: 65cuda]
#65738
05/30/08 10:11 AM
05/30/08 10:11 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
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the enginequest 318A's are a direct magnum replacement. the 318B's are the same casting, but LA intake bolt pattern. the 318B uses magnum valves and rocker gear. if you want to use shaft mount rockers, your best bet is edelbrocks or more used factory iron
Last edited by patrick; 05/30/08 10:12 AM.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Can Magnum sb head guides be drilled out to 11/32"
[Re: CHRONiklyDEMONic]
#65740
05/30/08 03:05 PM
05/30/08 03:05 PM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
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that's what they told me over email....
Last edited by patrick; 05/30/08 03:07 PM.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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