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05-06-2002, 09:28 PM
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#1 |
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Registered User
Join Date: Mar 2002
Location: elk grove , ca ,usa
Posts: 14
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Motor Mounts
Putting 496BB in my truck 1972 C/10 4x4. Can I use the small block mounts or do I need to buy the big block mounts. Will 73 and up bb mounts work?
Thanks Cory [This message has been edited by old yeller (edited May 06, 2002).]
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1972 C/10 4x4 |
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05-06-2002, 09:42 PM
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#2 |
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Registered User
Join Date: Aug 2001
Location: Long Beach, Ca
Posts: 1,432
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The mounts and towers are differant, Not sure about 73 but prob will work
------------------ 71 basic C-10 350. The only option is the rust.No nothing on it, but thats all about to change. <A HREF="http://www.geocities.com/stevemau/slam33page.html?1004806705410 " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>
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71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A> |
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05-06-2002, 09:45 PM
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#3 |
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Account Suspended
Join Date: May 2000
Location: IL
Posts: 0
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you need big ones, but there are two styles of bb mount sin 68-72, the 68-71 look like modified normal sb ones and the 72 ones are almost identical to 73-up ones, you can use 73-up ones, the 73-up ones differ by roughly 1.2" of length fromt he sb ones, but you will have exhaust manifold issues possibly, but maybe not on BB engines, someone else will know that
good luck ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 *many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham current fleet: -71 C-10 350/CH465/3.07- basketcase, #1 -90 Cavalier 2.2L sky blue, driver, was free -84 Z28 5.0L/700R4/3.73 daily driver -84 Firebird/SE 2.8L/T-5/3.73/engine bad, project #2 -82 purple Trans Am, project #3 *Paint is overrated* © RSS Enterprises 2000 |
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05-06-2002, 10:05 PM
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#4 |
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Registered User
Join Date: Mar 2002
Location: elk grove , ca ,usa
Posts: 14
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Thanks, So I still use my towers and just change the mounts. I just ordered my headers today. Motor should be ready next week.
[This message has been edited by old yeller (edited May 06, 2002).]
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1972 C/10 4x4 |
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05-07-2002, 02:05 AM
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#5 |
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Registered User
Join Date: Mar 2002
Location: Agua Dulce, Ca. usa
Posts: 179
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Can someone answer me why when I look at the 68-72 chevys at truck shows I have notice there is no rhyme or reason to me why some of the motor mounts are about 3 in closer to the radiator then others. My boys is way back and the dist is right up against the firewall. Thanks Ed ke6bnl
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Ed ke6bnl Agua Dulce 70 S.E. Los Angeles 70 Chevy short bed 1948 F3 ford pu 1949 F1 stock V8 flathead 3 on floor 1950 F1 pu street rod 1948 F6 Ford Dually/350sbc no bed stock trans&rear 1972 El Camino 4" chop 1953 Chevy 3100 2b daily driver 1970 SB 4X4 400ci 6in lift |
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05-07-2002, 07:46 AM
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#6 |
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Registered User
Join Date: Aug 2001
Location: rock island,il,usa
Posts: 5,382
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If your smallblock is mounted on 6/250 stands,it will be close to the firewall. this has been on some for ease of installation(to save hunting drive line parts),or for weight transfer. The V8 stands set the eng closer to the radiator(2wd).....69 longhorn.
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05-07-2002, 07:55 AM
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#7 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,714
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Don't order your mounts yet! Your truck is a 4x4, right? GM never put big blocks in 4x4s until '73 so the only mounts available are the small block ones. Ask other board memberrs who have big blocks in their 4x4 how they did it. Firewall clearances, headers, and clutch linkage are BIG considerations.
------------------ 70 GMC 3/4 ton Sierra Grande 402/TH400 72 Jimmy 4WD 4spd 4" & 35's 64 Corvette Coupe 68 Camaro 'vert TPI & TH700 69 Z/28 355 12.6's @110 72 Datsun 240Z-ol' reliable
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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05-07-2002, 08:00 AM
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#8 |
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CCRider
Join Date: Feb 2000
Location: Olive Branch,MS,USA
Posts: 2,232
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You can mount the motor on the small block mounts but you will not like it. They are barely strong enough for a small block and will break the first time you get down on that 496. Your best bet for a bolt in would be some 72 mounts as they were the strongest big block mounts for these year trucks. If you don't mind a little fab work the 73 up are made very similar to the 72 mounts,so you could "make" them work,it all depends all your fabracation skills. GOOD LUCK
------------------ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS
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72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS |
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05-07-2002, 10:11 PM
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#9 |
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Registered User
Join Date: Mar 2002
Location: elk grove , ca ,usa
Posts: 14
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Thanks Tom looks like I will be ordering some 72 mounts.
------------------ 1972 C/10 4x4
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1972 C/10 4x4 |
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05-08-2002, 06:20 AM
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#10 |
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Registered User
Join Date: Mar 2002
Location: Agua Dulce, Ca. usa
Posts: 179
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Thanks for the infor on the motormount location, I believe you are right on. I thing the vin number shows that this truck had a 6 cyl. in it at one time that would be the reason for the mount location and as you sy they did not want to change out some of the parts. We may make that change as we go along. Thanks Ed ke6bnlF@juno.com
------------------ Ed ke6bnl Agua Dulce 70 S.E. Los Angeles 70 Chevy short bed Sorry 50 F1 pu Sorry 63 Ford Econoline pu
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Ed ke6bnl Agua Dulce 70 S.E. Los Angeles 70 Chevy short bed 1948 F3 ford pu 1949 F1 stock V8 flathead 3 on floor 1950 F1 pu street rod 1948 F6 Ford Dually/350sbc no bed stock trans&rear 1972 El Camino 4" chop 1953 Chevy 3100 2b daily driver 1970 SB 4X4 400ci 6in lift |
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05-08-2002, 07:31 AM
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#11 |
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Registered User
Join Date: Aug 2001
Location: rock island,il,usa
Posts: 5,382
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Ed,iused 6/250 stands on my V8 truck to move a little weight back......unless you are having trouble with dist clearance,or doing a "correct resto",I wouldnt worry about where it is located.........69longhorn.
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05-08-2002, 07:34 AM
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#12 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,714
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His truck is a 4x4. Small blocks and sixes were mounted in the same location. As far back as possible. This was done in order to maximize the length of the front driveline in order to minimize the driveline angles.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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05-08-2002, 07:48 AM
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#13 |
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Registered User
Join Date: Aug 2001
Location: rock island,il,usa
Posts: 5,382
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Oldyellers truck is a 4x4,but I didnt see anything about Ed,s truck being a 4x4........that is the truck I was refering to. If it is a 4x4.......you are right on MikeC.......the 4x4s did mount the smallblock in same as 6 cyl position........69 longhorn.
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