Help Identifying Heads??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HotRod929 · 01-28-2003, 09:22 PM

Where is the casting # located on heads that will identify what heads I have right now?

HotRod

jmanz69 · 01-28-2003, 09:37 PM

Under the valve cover.

72MARIO · 01-28-2003, 10:11 PM

Help me too the number I got is not in the rebuilding you small block Chevy Book The number is somthing like 3998920?
the only number I am for sure on is th 920 any ideas ?
thanks Mario

**breeh** · 01-28-2003, 10:37 PM

1972-74 3998920 350 1.94 1.5

jmanz69 · 01-28-2003, 10:41 PM

Here's what I did. I took and copied and pasted all the info on the mortec.com website for casting numbers and put them in an Excel spreadsheet. That way when I have a question about a casting I can look there. Plus, when I find one that is not listed and someone else has it I can add to the library I have. Makes it easier than going back and forth, plus you can search Excel!

Just trying to make life easier for you guys. I am too lazy to go back and forth, scrolling up and down. I can send you the excel files I have if you want, just be advised they are not complete since I update them only when I find new stuff.

72shadetree · 01-28-2003, 11:45 PM

nice idea i just printed them and stapled together

01-28-2003, 09:22 PM	#1
HotRod929 Registered User Join Date: Mar 2002 Location: Bondurant, IA but in Worcester, MA for school Posts: 767	Help Identifying Heads??? Where is the casting # located on heads that will identify what heads I have right now? HotRod __________________ 1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/

01-28-2003, 10:11 PM	#3
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	Help me too the number I got is not in the rebuilding you small block Chevy Book The number is somthing like 3998920? the only number I am for sure on is th 920 any ideas ? thanks Mario __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

01-28-2003, 10:37 PM	#4
breeh Recovering 67-72 Addict Join Date: Oct 2000 Location: North Bend, WA Posts: 1,788	1972-74 3998920 350 1.94 1.5 __________________ 68 Short Fleet 4x4; 427; BTO Level 3 700R4; NP205; Dana 60 front and rear; 4" lift with 35's; Disc brakes; AGR variable ratio steering; factory bucket seats; factory tach and tilt. "Friends call me cruzer cuz I like fast cars and fast women"

01-28-2003, 11:45 PM	#6
72shadetree KEEP ON TRUCKING Join Date: Sep 2000 Location: martinsville va Posts: 2,563	nice idea i just printed them and stapled together __________________ 72 cheyenne 2wd lwb 71 k20 sons bassett va

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01-28-2003, 09:37 PM	#2
jmanz69 Careful, they attack... Join Date: Aug 2001 Location: Waterford, MI, USA Posts: 1,107	Under the valve cover.

01-28-2003, 10:41 PM	#5
jmanz69 Careful, they attack... Join Date: Aug 2001 Location: Waterford, MI, USA Posts: 1,107	Here's what I did. I took and copied and pasted all the info on the mortec.com website for casting numbers and put them in an Excel spreadsheet. That way when I have a question about a casting I can look there. Plus, when I find one that is not listed and someone else has it I can add to the library I have. Makes it easier than going back and forth, plus you can search Excel! Just trying to make life easier for you guys. I am too lazy to go back and forth, scrolling up and down. I can send you the excel files I have if you want, just be advised they are not complete since I update them only when I find new stuff.



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