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05-27-2003, 09:00 PM
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#1 |
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Registered User
Join Date: Sep 2002
Location: long island, new york
Posts: 1,333
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exaust problems........
-im installing ths engine for this guy down the road from me and im replacing a 79 350 with a 72 invader 350 out of a work van. the engine is clean!!! for 1972 btw. but heres the prob he exaust manifolds from the 79' wont fit the heads on the 72 ???? i thought all sbc's were the same theres an 18 inch off both back cylinders the bolts are far from lined up. i can only get 4 bolts in on either side im confused
 -kyle
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1986 c-10 swb 5/7 drop 20'' coys 1958 belair 2door |
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05-27-2003, 10:00 PM
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#2 |
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440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
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how far off are the other two bolt holes? The manifold may have contracted. You can get expanders from a tool dealer
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Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America 
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05-27-2003, 11:46 PM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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I have had this happen myself, it was a pain, but i got all the bolts in eventually. Try getting all of them in about 4 threads, and if you get them all started, then spin each one down a little bit untill your done.
When i installed the caddy engine I coulda sworn the 472 manifolds were not the same as the 425...but it was just from heat cycling. |
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