Heads have lost their identity - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jays68yak · 01-18-2003, 07:17 PM

My heads have the following numbers on them:
GM13
88417369
241
95

Whats the specs on these things??

Nova_Cobra64 · 01-18-2003, 09:22 PM

I think your heads may just have a mistaken identity. The beginning 8s may actually be 3s, which would make them:

Quote:

33417369...90-up...350..........Gen.I Goodwrench crate motor, "Hecho en Mexico", 76cc

according to mortec.

Nova_Cobra64 · 01-18-2003, 09:26 PM

Found more on stingray.nu:

Quote:

Gen I Goodwrench, Mexican, 76cc, 1.94"/1.5" valves, 7 bolt exhaust, perimeter valve cover bolts, "heavy" casting

jays68yak · 01-19-2003, 04:16 PM

So are theses good? Bad? Ok?
Thanks

01-18-2003, 07:17 PM	#1
jays68yak Registered User Join Date: Oct 2002 Location: Gilroy, CA Posts: 1,454	Heads have lost their identity My heads have the following numbers on them: GM13 88417369 241 95 Whats the specs on these things?? __________________ 1969 Chevy Project SWB Fleet, 20s, 5.3, t56, in the weeds. 1970 Chevy Truck cab on a 1979 Jimmy frame-8.1 liter 496 bbc/sm465/np203-jeds doubler-np205/d60/14bff Welded/42 tsls on recentered H1s 1998 Chevy Crew Cab K3500 SAS'd with hpd60, links and swayaway coilovers. 8.1l vortec DD/towrig "I like long walks, especially when they are taken by people who annoy me. "

01-19-2003, 04:16 PM	#4
jays68yak Registered User Join Date: Oct 2002 Location: Gilroy, CA Posts: 1,454	So are theses good? Bad? Ok? Thanks __________________ 1969 Chevy Project SWB Fleet, 20s, 5.3, t56, in the weeds. 1970 Chevy Truck cab on a 1979 Jimmy frame-8.1 liter 496 bbc/sm465/np203-jeds doubler-np205/d60/14bff Welded/42 tsls on recentered H1s 1998 Chevy Crew Cab K3500 SAS'd with hpd60, links and swayaway coilovers. 8.1l vortec DD/towrig "I like long walks, especially when they are taken by people who annoy me. "



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