Originally Posted by furious70
I just got a used 392 cam for cheap so now I'm really interested in what y'all converge on. Sounds like Ray #1 says no way, Ray #2 used the stock eagle springs but 1/2 the OEM shim height, (or did you used the springs you linked?) and HRD went with 6.4 springs and shims and also made it work?



On my 5.7 in my 09 we used the stock Eagle springs, when I had the heads redone , we went with the Mopar springs., I'm home today so I'll get a measurement on the spare MDS SRT cam I have .

1963 Thunderbolt 496FE 10.80 (still a work in progress)
1968 Mustang slow a$$ 428 FE
1971 Boss 351 Mustang 11.20@115mph
1993 Lightning 10.61 @ 129mph 408Ci A3 headed NA
1996 Viper GTS
2001 Lightning 8.99 @ 155MPH 5.4 Mod Motor
2009 Ram 9.65@144MPH 463CI G3 NA
2010 Challenger 9.91 @ 139MPH 408CI G3ci NA
2019 F150 (local dealer's Lightning package) ..11.90s