Original 1969 350sbc specialist please! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

syncrov69 · 10-20-2007, 11:52 PM

Can this engine look like an original 1969 350 sbc block. I'd like to have your opinion before make road to check all number. Thank's

1969k10stepside · 10-20-2007, 11:58 PM

It could be--The 350 didnt change much year by year that is visible stuff..the bracketry and pulley system look like original 67-72 truck stuff though...Can't really know till you check the numbers.It could be original,may not be...need the numbers to know.

Longhorn Man · 10-21-2007, 12:23 AM

been a while since I've dinked around with the small blocks... but I am thinkin that is a 71/72 alt bracket. I remember the 69/70 ones having the arm bolt to the cradle.

Blazer1970 · 10-21-2007, 07:01 AM

Did they make a 2 barrel 350? Otherwise it looks correct to me. Maybe a 307?

**uncle** · 10-21-2007, 07:41 AM

Looks like a 307 if you look at the harmonic balancer. If it has a 350,it's normally on the option sheet in the glove box and will also have the emblems on the fenders.

syncrov69 · 10-21-2007, 08:47 AM

The truck is a C/30 with a 157" wheelbase but no 350 is listed on the spid sheet. Is it stock in this kind of truck? Other question, what is the size of the harmonic balancer center bolt to turn the engine and confirm that engine turn?

67_C-30 · 10-21-2007, 10:30 AM

The balancer on a 307 ith be 6 1/4" in diameter and about 1.25" thick. The balancer on the 350 with be 8" in diameter and about 2" thick.

syncrov69 · 10-21-2007, 10:36 AM

And what is the size of the center bolt to turn crankshaft manually whit a wrenche and socket

syncrov69 · 10-21-2007, 10:57 AM

I have check the engine after a car run and this is a 283 not a 350. Is it interesting?

stllookn · 10-21-2007, 11:45 AM

283's are great little motors. I have one in my '67 stepside and since the compression is excellent...I don't even want to mess with replacing it. Some day it will come out and get replace with a larger displacment motor but for now it is just fine.

1969k10stepside · 10-21-2007, 12:03 PM

Quote:

Originally Posted by Blazer1970

Did they make a 2 barrel 350? Otherwise it looks correct to me. Maybe a 307?

My 69 4wd did have a 350 2 barrel..the truck was all original

67_C-30 · 10-21-2007, 12:11 PM

It could be a 283, but it has been changed. A 283 would have an oil filler on the front of the intake and valve covers w/o pcv and oil fill holes. Somebody would have had to put the intake and covers off a newer engine. Did you look at the casting numbers on the back of the block? That's really the only sure to know what is. The stamping numbers on the front are usually useless unless you know the casting numbers and date codes on the back of the block because GM reused stamped codes from year to year.

10-20-2007, 11:52 PM	#1
syncrov69 Registered User Join Date: Aug 2007 Location: Laval, Québec, Canada Posts: 175	Original 1969 350sbc specialist please! Can this engine look like an original 1969 350 sbc block. I'd like to have your opinion before make road to check all number. Thank's Attached Images __________________ '71 Custom/10 Deluxe LWB '71 Custom/30 Deluxe Dually

10-20-2007, 11:58 PM	#2
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,020	Re: Original 1969 350sbc specialist please! It could be--The 350 didnt change much year by year that is visible stuff..the bracketry and pulley system look like original 67-72 truck stuff though...Can't really know till you check the numbers.It could be original,may not be...need the numbers to know. Last edited by 1969k10stepside; 10-21-2007 at 12:01 AM.

10-21-2007, 12:23 AM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Original 1969 350sbc specialist please! been a while since I've dinked around with the small blocks... but I am thinkin that is a 71/72 alt bracket. I remember the 69/70 ones having the arm bolt to the cradle.

10-21-2007, 07:01 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: Original 1969 350sbc specialist please! Did they make a 2 barrel 350? Otherwise it looks correct to me. Maybe a 307? __________________ Tim

10-21-2007, 07:41 AM	#5
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,286	Re: Original 1969 350sbc specialist please! Looks like a 307 if you look at the harmonic balancer. If it has a 350,it's normally on the option sheet in the glove box and will also have the emblems on the fenders.

10-21-2007, 08:47 AM	#6
syncrov69 Registered User Join Date: Aug 2007 Location: Laval, Québec, Canada Posts: 175	Re: Original 1969 350sbc specialist please! The truck is a C/30 with a 157" wheelbase but no 350 is listed on the spid sheet. Is it stock in this kind of truck? Other question, what is the size of the harmonic balancer center bolt to turn the engine and confirm that engine turn? __________________ '71 Custom/10 Deluxe LWB '71 Custom/30 Deluxe Dually Last edited by syncrov69; 10-21-2007 at 08:56 AM.

10-21-2007, 10:30 AM	#7
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Original 1969 350sbc specialist please! The balancer on a 307 ith be 6 1/4" in diameter and about 1.25" thick. The balancer on the 350 with be 8" in diameter and about 2" thick. __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club!

10-21-2007, 10:36 AM	#8
syncrov69 Registered User Join Date: Aug 2007 Location: Laval, Québec, Canada Posts: 175	Re: Original 1969 350sbc specialist please! And what is the size of the center bolt to turn crankshaft manually whit a wrenche and socket __________________ '71 Custom/10 Deluxe LWB '71 Custom/30 Deluxe Dually

10-21-2007, 10:57 AM	#9
syncrov69 Registered User Join Date: Aug 2007 Location: Laval, Québec, Canada Posts: 175	Re: Original 1969 350sbc specialist please! I have check the engine after a car run and this is a 283 not a 350. Is it interesting? __________________ '71 Custom/10 Deluxe LWB '71 Custom/30 Deluxe Dually

10-21-2007, 11:45 AM	#10
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: Original 1969 350sbc specialist please! 283's are great little motors. I have one in my '67 stepside and since the compression is excellent...I don't even want to mess with replacing it. Some day it will come out and get replace with a larger displacment motor but for now it is just fine. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

10-21-2007, 12:11 PM	#12
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Original 1969 350sbc specialist please! It could be a 283, but it has been changed. A 283 would have an oil filler on the front of the intake and valve covers w/o pcv and oil fill holes. Somebody would have had to put the intake and covers off a newer engine. Did you look at the casting numbers on the back of the block? That's really the only sure to know what is. The stamping numbers on the front are usually useless unless you know the casting numbers and date codes on the back of the block because GM reused stamped codes from year to year. __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club!



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