408 stroker build
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Joined: Jan 2011
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He won't spin the motor fast enough to worry about the rockers, he'll run out of steam way before that, he's doing more of torque build...But if anything is going to limit the RPMs on a magnum 5.9, it's the lifters, they are good to 6500, although some guys do spin em higher...tic tic tic....
I'm running what are essentially shimmed lifters, they don't bleed down, aren't prone to collapsing at 7K, and I set em with a feeler gauge.
I'm running what are essentially shimmed lifters, they don't bleed down, aren't prone to collapsing at 7K, and I set em with a feeler gauge.
I dont see a cam spec one so dont know the potential of the build?
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Joined: Jan 2009
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From: Corrales, New Mecico
Not saying your wrong, but got a link? I might learn something.
All Star
Joined: Jan 2009
Posts: 907
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From: Corrales, New Mecico
Here ya go...Also thinks it's easier to adjust the valve lash before you bolt on the intake, easier to get to the push rods to see if they are at zero lash...
Last edited by Adobedude; Feb 25, 2011 at 02:13 PM.
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Record Breaker
Joined: Feb 2010
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From: Chesapeake, VA
few questions for you:
do you know anything about the intermediate shaft bushing? does the bore need to be modified? is this the right one? i know it says up to "91 but this is the only brass one i can find the magnum ones are steel and the one i pulled out was brass. LA and magnum pump shafts are the same
any comments on these injectors for the 408?
are arp stud torque specs and oem bolt specs the same?
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Just as i thought, crowers "K" kit good to 5500RPM. Kit comes with SA RR and studs.
The "PK" kits switch to standard roller tip hence the use of GP'S in this kit. Good for over 5500k.
6800 with SA is not a goodthing. I would switch to GP if you plan on staying in that high of a range,
http://www.dakota-durango.com/parts_rollerrockers.php
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Joined: Jan 2011
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ok thanks man,
few questions for you:
do you know anything about the intermediate shaft bushing? does the bore need to be modified? is this the right one? i know it says up to "91 but this is the only brass one i can find the magnum ones are steel and the one i pulled out was brass. LA and magnum pump shafts are the same
any comments on these injectors for the 408?
are arp stud torque specs and oem bolt specs the same?
few questions for you:
do you know anything about the intermediate shaft bushing? does the bore need to be modified? is this the right one? i know it says up to "91 but this is the only brass one i can find the magnum ones are steel and the one i pulled out was brass. LA and magnum pump shafts are the same
any comments on these injectors for the 408?
are arp stud torque specs and oem bolt specs the same?
Brass requires only to tap it in and ream it out to size. Have the machine shop do it if unsure.
Injectors are based off HP +1 size larger for tuning room. Can not calculate HP without cam spec's.
Head stud tq to 85ft-lbs iirc with molly. The studs themselfs only hand thread/tight in the block. Do not double nut them and tq them down. Re-torque after 2-3 warm up's.
Your way away from adjusting lash. I would be researching block prep and rotating assembly. Why dont i have oil pressure? Forgot to check if the oil galley plugs were re-installed after cleaning. Plug #6 is a bugger to set to depth correctly lol
EDIT..http://www.hughesengines.com/Upload/...structions.pdf
Last edited by 4085spd; Jan 10, 2011 at 01:47 AM.
All Star
Joined: Jan 2009
Posts: 907
Likes: 2
From: Corrales, New Mecico
http://www.crower.com/media/pdf/2008b/153-155.pdf
Just as i thought, crowers "K" kit good to 5500RPM. Kit comes with SA RR and studs.
The "PK" kits switch to standard roller tip hence the use of GP'S in this kit. Good for over 5500k.
6800 with SA is not a goodthing. I would switch to GP if you plan on staying in that high of a range,
http://www.dakota-durango.com/parts_rollerrockers.php
Just as i thought, crowers "K" kit good to 5500RPM. Kit comes with SA RR and studs.
The "PK" kits switch to standard roller tip hence the use of GP'S in this kit. Good for over 5500k.
6800 with SA is not a goodthing. I would switch to GP if you plan on staying in that high of a range,
http://www.dakota-durango.com/parts_rollerrockers.php
But the Crowers on the Magnum R/T heads are SA...
I like the guide plate idea...Thanks for the info, never really thought about it before now.
Last edited by Adobedude; Jan 10, 2011 at 03:49 PM.