6.1 srt parts interchange - Hemi Truck Club
 
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Old 03-21-2005, 10:38 AM   #1
 
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6.1 srt parts interchange

this is wayne, hemiram 911, i work in a dealer, i have discovered that the forged steel crank , high lift cam and larger valves are all interchangeable with 5.7 motors. only mod needed is the valve seats in the heads need to be opened up to accept the larger valves and thecomputer issue to run the new valve lift and timing

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Old 03-21-2005, 10:45 AM   #2
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6.1 srt parts interchange

Hi Wayne... this is MrHemi. Welcome to HTC.com! Do you own a Hemi or just work at a dealer? Also - how did you make this discovery? I'm interested to say the least...
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Old 03-21-2005, 11:40 AM   #3
 
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6.1 srt parts interchange

hey mr hemi, yes i do own a hemi, 2003 2500 2wd, hd rear with the 4,10 gears i found this info in the chrysler service engine specs for the 05 charger with the 6.1 srt.all bearing journal sizes in the motor are identical, so it will all fit
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Old 03-21-2005, 11:51 AM   #4
 
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6.1 srt parts interchange

cam specs,
6.1 lift . int .571 exh.551
5.7 int.472 exh.460
duration 5.7 253
6.1 286
valves 6.1
int.2.08 exh1.60
5.7 int 2.00 exh 1.50
seat size the same
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Old 03-21-2005, 11:54 AM   #5
 
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6.1 srt parts interchange

oh and by the way, these valves are sodium filled in the 6.1 to stay cooler, and these parts are not verry expensive , especially for an employee, lol
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Old 03-21-2005, 12:03 PM   #6
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6.1 srt parts interchange

Is the 6.1 a "STROKER" 5.7, or is the bore larger too?
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Old 03-21-2005, 12:23 PM   #7
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6.1 srt parts interchange

Good info Wayne! Thanks. Our man SuperJay will be happy to hear this as well (he's our engine guy).
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Old 03-21-2005, 12:24 PM   #8
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All we need now is stronger valve springs...
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Old 03-21-2005, 01:15 PM   #9
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6.1 srt parts interchange

I would bet the 6.1 has heavier valve springs than the 5.7
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Old 03-21-2005, 01:24 PM   #10
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6.1 srt parts interchange

HR911; Does your book tell you if the pushrod length is the same? Are the rocker arms the same? That must be a wide *** seat in those heads if it will fit a 1.50 and 1.60 valve with same seat. Hate enlarging hardened seats. It takes forever.
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