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#1 |
Registered User
Join Date: Nov 2008
Location: Hoschton Ga
Posts: 15
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Small block to big block need help
I have a 66 c10 350 engine turbo 350 trans, motor in stock location. I want to upgrade to 454. What all will I need I want to keep the turbo 350 trans? I was told a direct replacement but I came to the pros. Any info thanks ps the 454 is complete taking out of motor home.
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#2 |
Registered User
Join Date: Feb 2007
Location: Los Angeles
Posts: 674
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Re: Small block to big block need help
only thing you need is the 68-71 bbc mounts and your good to go....if the 454 is running tall valve covers then youll need to move the motor forward one hole position on the perch locations to clear the master cylinder/booster....if this has to be done then yes you will need to re-do driveshaft and trans mount location also. Can also just go with this kit from Truck/Car Shop ( 63-1281041 $129 ) or any other Truck parts store that has that mount/perch kit.
I ran a 454/th350 in stock location with standard valve covers and even full length headers, had full clearance to the distributor and oil stick. |
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#3 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Small block to big block need help
Depending on what class the motorhome is, you may be able to use the complete motor mount assembly from it. I prefer to use the '73 and up motor mounts myself. You can use the '69-'71 big block motor mounts, but they can be a little hard to find and a little $$ when you do find them. Check out protrash64's build thread on his Suburban. He installed a big block in his Burb using the later model mounts.
http://www.67-72chevytrucks.com/vboa...=272654&page=8 You will need to trum the top flange of the frame through the engine compartment for both motor mount installation and header clearence. You can use the headers for the '73-'87 trucks.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by Captainfab; 11-12-2010 at 12:28 AM. |
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#4 |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: Small block to big block need help
You will need a 454 flexplate if the engine doesn't come with one. Don't try to use the one from the 350. The 454 flexplate has a balance weight on it that you can see.
Ray
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Live more responsibly. Eat lower on the food chain. Eat vegetarians. |
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#5 |
Intentionally Left Blank
Join Date: Dec 2008
Location: Broussard, LA
Posts: 355
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Re: Small block to big block need help
Awesome info. I'm thinking of this myself. subscribed--Jeff
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1965 C-10 Short Fleet 468/TKO 5-Speed 2004 2500HD Crew 496/Ally Blacked Out (SOLD!!) 1997 Formula WS6 2004 Jeep Wrangler (Sold) 2013 Jeep Wrangler (Sold) 2017 Jeep Wrangler (Blacked Out on 35's) 2011 GMC D-Max Dually Denali 3500HD (Sold) 2015 GMC D-Max Dually Denali 3500HD (Sold) 2018 GMC D-Max Dually Denali 3500HD (Sold) 2020 D-Max Dually Denali on 33x12.50's 1979 GMC Short Bed Step-Side 4x4 350/350 Low Miles |
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#6 |
Registered User
Join Date: Nov 2008
Location: Hoschton Ga
Posts: 15
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Re: Small block to big block need help
Will stock exhaust manifolds work ? I just dont like headers.
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#7 |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: Small block to big block need help
They will if you use the BB frame brackets.
Ray
__________________
Live more responsibly. Eat lower on the food chain. Eat vegetarians. |
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#8 |
Registered User
Join Date: Sep 2010
Location: Tucson, Arizona
Posts: 30
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Re: Small block to big block need help
They Look and run great when done
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#9 |
Registered User
![]() Join Date: Sep 2006
Location: San Francisco
Posts: 4,780
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Re: Small block to big block need help
This is the best I have for now.
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"A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536 |
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