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    Eagle Forged Stroker Crank CRACKED

    Built a 408 from a Magnum Platform a few years ago. Recently been running it and dialing in the tune and in doing so making some hard pulls. It was running really nicely then I noticed a knocking and a wobbly balancer. Of course I pulled the drain plug and found it full of metal. Pulled...
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    [SOLD] Stewart Warner Maximum Performance Gauge lot

    Stewart Warner Maximum Performance Gauge lot. $95 shipped Removed these from a vehicle I purchased for the drivetrain. Only the transmission temp and oil pressure gauges had senders and we’re hooked up. I didn’t see the oil gauge pressure work and never drove the vehicle so I am unsure if the...
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    [FOR SALE] 1.6 Comp Roller Rockers for Magnum Heads

    1131-16 Comp 1.6 Roller Rockers These are 3/8 studs and come with the stud conversion adapters and guide plates. These have a few thousand miles on them and came off some R/T heads I purchased for a future project. $325 shipped.
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    [WANTED] MPI Intake Manifold Magnum

    Looking for an M1 2bbl or 4bbl or Hughes Airgap. Thanks!
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    [SOLD] Harland Sharp Roller Rockers 1.7 Pedestal Mount

    S70037 Harland Sharp Roller rockers for magnum heads. These are new, not used but were mocked up. My build changed directions and required a new camshaft that needed 1.6 rockers. About half did develop minor surface rust on a portion of the roller. I suspect because I left them out in my...
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    Magnum Cam Bearing Bores Scored

    I removed the cam bearings out of a budget 5.9 build I am planning and noticed on the #1 cam bearing bore, there is scoring (gouges) that appear to have been there for some time. The gouges are dark and did not appear like "fresh clean metal". The cam bearings came out relatively easily and...
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    408 Magnum New Build, Gutless of idle

    Okay guys here goes...... Just finished putting together what I hoped was going to be a torque monster, between speaking to Hughes, Comp, and a few engine builders this should have been making power off idle. What I am finding out is I have a truck that seems gutless until about 3000 rpm then...
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    [FOR TRADE] Wanted: 1.6 Pedestal or Stud Roller Rockers

    I have some Harland Sharp 1.7 rockers for 5/16 pedestal mounted Magnum heads. Part S70037 Looking for part S70036 or S7306 Looking to trade for 1.6 Harland Sharp 5/16 pedestal or 3/8 stud mount rocker arms. The 1.7 will outfit my springs. Willing to buy or trade. Thanks!
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    Pushrod Length Ordering

    I mocked up a hydraulic lifter with some washers to make it solid to check for pushrod length. I am coming up with 6.800. Now, I know that anywhere from 1/2 turn to 2 1/2 turns preload have been suggested through my research for the Magnum lifters. My question is, whichever preload I...
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    Engine Builders-KB356 Piston Milling

    Purchased a used 408 Long Block some time back. It wasn't from the person that had the motor built so alot of the specs were found through disassembly. It has KB356 Pistons that are about .040 in the hole and the quench dome has been milled flat with the rest of the piston. The KB356 specs it...
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    Cam Specs.....where will the power be?

    Called Comp yesterday and while the guy was very helpful and spent a great deal of time with me, he didn't see to be very confident with what he told me. This is going into a 9.5:1 408 stroker Magnum platform Airgap Intake, Ported 2.02 RT heads Cam specs are: 224/230 .536/.544 on a 114 LSA...
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    [WANTED] .010 Under Narrow Rod and Main Bearings

    Looking for narrow and .010 under rod and main bearings. Brand don’t matter, coated don’t matter. Looking for a 4” eagle crank for a magnum 408. Just need the right size that allows for enough radius clearance on the crank. Looking to buy, trade, trade plus cash.......whatever works I have...
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    Narrow Bearing Options

    Anyone aside form Clevite that makes a narrow bearing for an undersize .010 360 crank with factory journal sizes of mains 2.8095-2.8105 and rods 2.124-2.125? Thanks! Thomas
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    360 Magnum Crack....head bolt to water jacket

    Purchased this used long block and when I was cleaning it up I noticed a poorly executed thread repair and a crack running from it to an adjacent water jacket. The threadsert sits up above the deck. How a cylinder head sealed I have no idea. No signs of moisture in the combustion chamber and the...
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    Ring Gap Question

    Purchased some Moly Coated Steel rings from Hastings for a .030 over 408 stroker build on a Magnum. Running Keith Black 356 Hyper pistons. KB calls for a .008 multiplier for Street Towing and boosted applications for the top ring and .004 for the second ring regardless of application. I...
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    Camshaft choice for 408 Magnum w/ boost plans

    I have two camshafts on hand and am hoping one will be suitable for my plans. Being that I dont know anything about the numbers on camshafts, I hope the community can take the information I do know and can provide me the best option. 2000 Dodge Ram 4x4, trying to keep power low...... idle-5000...
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    5.9 Magnum Cam bearing orientation

    Any source that indicates the correct indexing of cam bearings for the magnum motors? The 5.9 I am in right now has had the bearings replaced, and from the looks of the other assembly I want to confirm they were placed correctly before using their correct positions for reference. Thanks! Thomas
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    Rocker to Retainer with Pictures

    Through my research I haven't found an objective spec on what it should be but more less "exercise the rocker arm throughout its throw and check for interference. Provide clearance and adjust as necessary". Seems a bit generalized. I am hoping to run these HS 1.7 on my Magnum Heads but I...
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    [FOR SALE] Magnum OEM Valve Covers

    $40 plus shipping
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    [SOLD] Magnum R/T Cylinder Heads

    These came off a 2000 Durango that broke a rod. These were purchased through KRC performance years ago and were cut for a 2.02 intake valve and had a bowl blend and very light port work on the intake runner and the valve guide for taper. They called them “street port” heads. The damage is...
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    [WANTED] 4” Ball Hone

    Looking for a 320 or 400 grit ball hone to deglaze some cylinders for some moly rings. Thanks! Thomas
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    .002 Undersize Main Bearings

    Took my 4" Crank to a local machine shop to get polished for my 408 Magnum refresh. Machinist mic'd each journal in three spots and with the specs I provided said it would clean up and still fall within spec, on the lower end. I picked it up and took it to my brother in laws machine shop (non...
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    Going from 9.5 to 9.1 Compression 408 Magnum

    Picking up a motor tomorrow that was built for 9.5:1 compression. I am planning on throwing my RT heads on but am hoping I can get the compression low enough to run 87 octane. Going into an older pickup used to tow a boat. I still have to get the motor and run the unknown numbers I don't have...
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    [WANTED] P5007610

    Magnum Performance Mopar book about the 94-01 trucks with Magnum motors. If you have one laying around and don’t need it let me know! Thanks!
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    [WANTED] Magnum Performance Parts

    Anything performance oriented for the Magnum series engines. Looking to retain EFI. Internal and external parts: Cylinder heads And components Rockers Camshafts Intake manifolds Power adders Underdrive pulleys MP valve covers etc Thanks!
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    Magnum Valve Spring Shims

    I am having a hard time trying to find the correct ID and OD shims for my RT heads. The spring seat is approx. 1.41 OD and .980 ID. Looking for .15 and .30 to get all my installed heights correct. Any suggestions would be great! Thanks!
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    [WANTED] EFI intake for Magnum (Hughes, M1)

    Looking for an EFI intake for the magnum motor. Prefer a Hughes airgap or M1 2bbl. An M1 4bbl with adapter could possibly work too. Thanks! Thomas
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    [WANTED] Magnum "Torque/RV" Cam

    Looking for a camshaft suitable for a full size truck that fits the Magnum Motor. Thanks! Thomas
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    Integral Valve Guide (Broken Boss) Repair Options

    Purchased some R/T heads and noticed when I got home and looked them over a few broken guide bosses in the intake ports. (3 out of the 8). Took them by one cylinder head shop and the owner said they would probably be ok just cleaning up the edges of the broken guide to avoid chipping but...
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    [WANTED] Magnum Cylinder Heads

    Looking for Magnum Cylinder heads with Magnum Intake pattern. Either factory valve sizes or 2.02 is fine. Preferably EQ318a but can’t be picky right now. An exhaust valve hung up in my oem heads and when I pulled them they were cracked in between half of the valve seats. Thanks! Thomas
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