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Re: Magnum R/T Heads........ Flow Results
[Re: RumbleVid]
#3803
09/09/03 01:52 PM
09/09/03 01:52 PM
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Joined: Jan 2003
Posts: 927
Peoples Republic of Boulder, C...
worthywads
super stock
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super stock
Joined: Jan 2003
Posts: 927
Peoples Republic of Boulder, C...
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Here's a shot of my modified rpm air-gap with r/t heads.
Hard to see but I was able to use a 318 throttle bracket and 318 1 piece kickdown linkage. With the small pedestal washers I made and bending the mounts on the throttle bracket from 45 to 90 degrees and some bending of the kickdown it works great. Saved on buying a lokar. 
See attachment 
Last edited by worthywads; 09/09/03 02:49 PM.
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Re: Magnum R/T Heads........ Flow Results
[Re: worthywads]
#3804
09/09/03 02:13 PM
09/09/03 02:13 PM
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Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
BBR
master
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master
Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
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Pic?
nevermind  still getting used to the attachment thing.....
Last edited by moparhead; 09/09/03 02:14 PM.
Drag Week 2011 - 77th place - DD
Drag Week 2012 - 2nd place SRBB N/A
Drag Week 2014 - Kapooya
RMRW 2018
RMRW 2020
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Re: Magnum R/T Heads........ Flow Results
[Re: BBR]
#3807
09/09/03 04:04 PM
09/09/03 04:04 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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How did you modify the intake for the vertical bolts used on the Magnum heads?
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Re: Magnum R/T Heads........ Flow Results
[Re: worthywads]
#3809
09/09/03 10:33 PM
09/09/03 10:33 PM
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Joined: Apr 2003
Posts: 125
Lomg Island NY
ChrisLib
member
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member
Joined: Apr 2003
Posts: 125
Lomg Island NY
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Quote:
Here's a shot of my modified rpm air-gap with r/t heads.
Hard to see but I was able to use a 318 throttle bracket and 318 1 piece kickdown linkage. With the small pedestal washers I made and bending the mounts on the throttle bracket from 45 to 90 degrees and some bending of the kickdown it works great. Saved on buying a lokar.
See attachment
I have been having a heck of a time getting the kickdown on my truck "just right",It has a crate motor and those darned vertical intake bolts, makes the angles all screwed up on the K/D bracket. Do you have any more pics of the K/d brkt?
93 W250 CTD CC,Auto,4 inch Rip Rook turbo back exhaust,16cm housing,Dodgezilla 35/40,POD`s, "Air Flow systems" intake & BHAF, Autometer Z-series boost&pyro,....
Someone help me wipe this smile offa my face...my cheeks are startin to hurt!
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Re: Magnum R/T Heads........ Flow Results
[Re: worthywads]
#3810
09/10/03 12:24 PM
09/10/03 12:24 PM
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Joined: Feb 2003
Posts: 4,204
Fort Worth, TX
Clair_Davis
master
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master
Joined: Feb 2003
Posts: 4,204
Fort Worth, TX
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I’m going in reverse with my intake… Magnum M1 EFI going on to my LA heads. Granted, this is to make my life easier on the EFI project, but I’m planning a Magnum R/T upgrade in the not-too-distant future. This way, I’ll be able to re-use the same intake for both sets of heads. FWIW, it appears after drilling the first hole, that there’s plenty of meat for two sets of bolts, and that the only thing that really got changed on the intake casting was the addition of vertical bosses for the Mag bolts. The funky angle that the LA intake bolts are set at is still cast in to the base of the intake, so that when you drill new holes, the heads of the bolts will sit flush with the surface of the intake. Near abouts as I can measure, this angle is 7.5 degrees UP from perpendicular to the intake face of the head. Anyone have a REAL number for this?
Also, while poking around trying to find an internet source for this data, I found a place that makes what appears to be an RPM knock-off that has BOTH intake bolt patterns on it. Google for “Dodge Magnum intake manifold bolt angle”. If I can find the real link this evening, I’ll post it.
Clair
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Re: Magnum R/T Heads........ Flow Results
[Re: ChrisLib]
#3811
09/10/03 07:41 PM
09/10/03 07:41 PM
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Joined: Jan 2003
Posts: 927
Peoples Republic of Boulder, C...
worthywads
super stock
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super stock
Joined: Jan 2003
Posts: 927
Peoples Republic of Boulder, C...
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Quote:
Quote:
Here's a shot of my modified rpm air-gap with r/t heads.
Hard to see but I was able to use a 318 throttle bracket and 318 1 piece kickdown linkage. With the small pedestal washers I made and bending the mounts on the throttle bracket from 45 to 90 degrees and some bending of the kickdown it works great. Saved on buying a lokar.
See attachment
I have been having a heck of a time getting the kickdown on my truck "just right",It has a crate motor and those darned vertical intake bolts, makes the angles all screwed up on the K/D bracket. Do you have any more pics of the K/d brkt?
I don't have any more pictures, but one thing I ended up doing (and you can see it in the picture, shiny chrome nut) is on the slotted rod that attaches to the carb I added a nut/bolt/washer to allow additional "lengthening" of the kickdown. It wasn't long enough as is and that was my simple solution. 
The only modification to the bracked was bending the 2 mounting tabs from 135 degrees to 90 degrees. It's a 1970 318 bracket. And yes the angles aren't pretty. 
Maybe that will help.
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Re: Magnum R/T Heads........ Flow Results
[Re: RyanJ]
#3812
09/16/03 10:01 AM
09/16/03 10:01 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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OK, you guys have convinced me to switch from my mildly ported 2.02 j heads to Magnums on my mildly built stock short block 360. I found a complete set of 98 R/T heads with 30K on them.
What do I do about pushrods for a hydralic cam?
Anyone make them for this conversion?
Are the stock roller cam springs adequate for my XE 268H cam reving to about 5700 RPM?
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Re: Magnum R/T Heads........ Flow Results
#3813
09/16/03 10:23 AM
09/16/03 10:23 AM
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Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
BBR
master
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master
Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
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FIRST AND FOREMOST!
Dakota R/T & Durango R/T trucks DID NOT come from the factory with these heads! They have standard Magnum heads, a different cam and different computer configuration than standard trucks.
Now:
Special hydraulic pushrods
Designed to allow the use of magnum heads and
standard magnum rockers on standard 1967-91
"A" short block/engines.
5007477 Magnum head on standard "A" block-set of 16
(7.625") $38.50
This is from Moparts Racing 
Make sure your lifters are AMC style lifters. If they have the little holes in the cups to let oil pass throught to the pushrods and eventually to the rockers. I know the last set of CompCAMS lifters I bought had the holes as well as the same part number for an AMC.
-James
Last edited by moparhead; 09/16/03 10:26 AM.
Drag Week 2011 - 77th place - DD
Drag Week 2012 - 2nd place SRBB N/A
Drag Week 2014 - Kapooya
RMRW 2018
RMRW 2020
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Re: Magnum R/T Heads........ Flow Results
[Re: BBR]
#3814
09/16/03 12:00 PM
09/16/03 12:00 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Good point on the standard Magnum heads. Is this worth doing with standard Magnum heads? My combo is stock 360 (low comp) with XE268 Hydrailic cam, wieand intake and Demonsizzler TQ plus TTI headers and 2.5 exhaust. I currently run J heads with 2.02/1.60 and home bowl port. I shift at 5600 rpm. I figured the compresiion gain would be worht the swap?
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Re: Magnum R/T Heads........ Flow Results
#3815
09/16/03 01:10 PM
09/16/03 01:10 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Re: Magnum R/T Heads........ Flow Results
#3816
09/16/03 03:09 PM
09/16/03 03:09 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
Good point on the standard Magnum heads. Is this worth doing with standard Magnum heads? My combo is stock 360 (low comp) with XE268 Hydrailic cam, wieand intake and Demonsizzler TQ plus TTI headers and 2.5 exhaust. I currently run J heads with 2.02/1.60 and home bowl port. I shift at 5600 rpm. I figured the compresiion gain would be worht the swap?
stealth or action plus? if it's the action plus, I'd go with a stealth or RPM/air gap. with the magnums, I'd do a good 3 angle job and a little bowl port/cleanup as well. you'll gain alot on the compression, and you'll get the same flow with a smaller valve/slightly smaller port, which should really help low end torque.
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: Magnum R/T Heads........ Flow Results
[Re: dogdays]
#3818
09/17/03 12:57 PM
09/17/03 12:57 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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It's actually an older Weiand intake that I haven't been able to identify. It has a spreadbore configuration like an Action Plus, but large runners like the Stealth. I like it because it has large runners but I can run my TQ without an adapter plate.
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Re: Magnum R/T Heads........ Flow Results
#3819
09/17/03 01:07 PM
09/17/03 01:07 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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if it's got 360 sized ports, I'd keep it then...
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: Magnum R/T Heads........ Flow Results
[Re: WilliamHall]
#3821
09/17/03 02:19 PM
09/17/03 02:19 PM
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Joined: Jan 2003
Posts: 154
Plano, TX
StricNine
member
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member
Joined: Jan 2003
Posts: 154
Plano, TX
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WilliamHall: No, it uses regular Magnum heads.
David
StricNine
79 Li'l Red Express, 15.04 @ 89.57
09 Challenger R/T, 11.95 @ 115.92
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Re: Magnum R/T Heads........ Flow Results
[Re: RyanJ]
#3822
09/24/03 02:51 PM
09/24/03 02:51 PM
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Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
BBR
master
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master
Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
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btt for some guys asking questions
Drag Week 2011 - 77th place - DD
Drag Week 2012 - 2nd place SRBB N/A
Drag Week 2014 - Kapooya
RMRW 2018
RMRW 2020
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