HELP id motor LT1-370hp?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jc · 01-15-2007, 10:36 PM

im having trouble reading the #s on the block in a truck i just baught
i can make out 397 possible a 3 next two more unreadable #s and the last # is a 4 .
the 3 middle numbers appear to be double stamed or someting so i cant mak em out
is there any other markings to tell if this is what i have like a plug in a certin spot or any dead give aways
the #s i got below are from mortec

3973414....70......350..........LT1-370hp, Camel hump, 64cc chamber

the intake has an egr valve and a 2barrel carb
i didnt see any #s on the front pad

the guy i baught the truck from says it runs but has been sitting.
im gonna spend some time getting it running before pulling anything apart any further.
if it is a 3973414 ,you guys have any idea on the value

jc · 01-15-2007, 10:39 PM

NOW IM CONFUSED I JUS FOUND THE FOLLOWING ON A CAMARO SITE
3973414 1970 350
3973414 1964-70 327

Blue85 · 01-15-2007, 11:13 PM

3973414 Is a cylinder head casting number, which you wouldn't be able see without popping off the valve cover, I cant read the block casting number in the pic but, 3970014 would be a 350, 1970-76, and 3970024 would be a 307, 1969-73, these are the only blocks that have numbers starting in 397 and ending in 4. BTW, what does the SPID label on glovebox door say for the engine option?

jc · 01-16-2007, 08:11 AM

nothing on the spec sheet , but just by looking i can see that the truck has 6cyl engine towers and they are mounted foward like they should be for an inline. and the motor sits away from the firewall.
its also a 3 on the tree column and tranny with the shifther moved to the floor.
but the truck has a 373 posi ,speed warning dash and HAD buddy buckets
and the above is listed on the spec sheet

ND_guy · 01-16-2007, 10:01 AM

Sorry I am of no help but, WOW that is one crusty engine.

01-15-2007, 10:36 PM	#1
jc Registered User Join Date: Jan 2001 Location: Jackson, New Jersey Posts: 1,560	HELP id motor LT1-370hp?? im having trouble reading the #s on the block in a truck i just baught i can make out 397 possible a 3 next two more unreadable #s and the last # is a 4 . the 3 middle numbers appear to be double stamed or someting so i cant mak em out is there any other markings to tell if this is what i have like a plug in a certin spot or any dead give aways the #s i got below are from mortec 3973414....70......350..........LT1-370hp, Camel hump, 64cc chamber the intake has an egr valve and a 2barrel carb i didnt see any #s on the front pad the guy i baught the truck from says it runs but has been sitting. im gonna spend some time getting it running before pulling anything apart any further. if it is a 3973414 ,you guys have any idea on the value __________________ 2004 Silverado 2500HD Crewcab 4x4 2000 TOYOTA 4RUNNER 1971 CHEYENNE LWB (THE LOVE SHACK) 1967 c-10 lwb (THE FARMERS DAUGHTER)

01-15-2007, 10:39 PM	#2
jc Registered User Join Date: Jan 2001 Location: Jackson, New Jersey Posts: 1,560	Re: HELP id motor LT1-370hp?? NOW IM CONFUSED I JUS FOUND THE FOLLOWING ON A CAMARO SITE 3973414 1970 350 3973414 1964-70 327 __________________ 2004 Silverado 2500HD Crewcab 4x4 2000 TOYOTA 4RUNNER 1971 CHEYENNE LWB (THE LOVE SHACK) 1967 c-10 lwb (THE FARMERS DAUGHTER) Last edited by jc; 01-15-2007 at 10:52 PM.

01-15-2007, 11:13 PM	#3
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,170	Re: HELP id motor LT1-370hp?? 3973414 Is a cylinder head casting number, which you wouldn't be able see without popping off the valve cover, I cant read the block casting number in the pic but, 3970014 would be a 350, 1970-76, and 3970024 would be a 307, 1969-73, these are the only blocks that have numbers starting in 397 and ending in 4. BTW, what does the SPID label on glovebox door say for the engine option? __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. Last edited by Blue85; 01-15-2007 at 11:16 PM.

01-16-2007, 08:11 AM	#4
jc Registered User Join Date: Jan 2001 Location: Jackson, New Jersey Posts: 1,560	Re: HELP id motor LT1-370hp?? nothing on the spec sheet , but just by looking i can see that the truck has 6cyl engine towers and they are mounted foward like they should be for an inline. and the motor sits away from the firewall. its also a 3 on the tree column and tranny with the shifther moved to the floor. but the truck has a 373 posi ,speed warning dash and HAD buddy buckets and the above is listed on the spec sheet __________________ 2004 Silverado 2500HD Crewcab 4x4 2000 TOYOTA 4RUNNER 1971 CHEYENNE LWB (THE LOVE SHACK) 1967 c-10 lwb (THE FARMERS DAUGHTER)

01-16-2007, 10:01 AM	#5
ND_guy Tool Addiction=Money Shortage Join Date: Mar 2006 Location: Grand Forks, ND Posts: 233	Re: HELP id motor LT1-370hp?? Sorry I am of no help but, WOW that is one crusty engine.

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