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#1 |
Registered User
Join Date: Jul 2004
Posts: 37
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454 engine swap
Hello i just got a 454 for my 70 chevy it has a 307 in it what will i need to look for when i get ready to put the 454 in thanks for any replies thanks shannon
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#2 |
GEARHEAD
Join Date: Jan 2007
Location: CENTRAL,PA
Posts: 2,284
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Re: 454 engine swap
Not real sure myself but I'm thinking engine mounts(towers), ofcourse brackets for the mounting of the alt. power steering ac if equip. well all the pulley stuff you get the picture and exaust. I have never done this conversion on one of these trucks so I can't give ya any of those helpful hints but I'm sure some one here will know some. ttt
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#3 |
Chevy Forever
Join Date: Jun 2005
Location: Dalzell SC
Posts: 314
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Re: 454 engine swap
Check the FAQ that is where I got my info for the swap. But pretty much what racinjason said
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My first love 1971 C20 Hugger orange Getting face lift and heart transplant .30 402 BB /TH400 and GV Wifes car 1969 Chevelle SS 396 325hp/TH400 Factroy A/C Automatic w/ Floor shift console. restored. Last edited by AKChevyman; 03-06-2007 at 11:13 PM. |
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#4 |
Registered User
Join Date: Apr 2004
Location: N.E. MO
Posts: 1,749
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Re: 454 engine swap
The motor mounts will work fine, but you'll need all the brackets for the PS ans alt, and AC if your truck has it.
Also you'll need the BB exhaust manifolds. Is your truck 2wd or 4x4?
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72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey |
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#5 |
Registered User
Join Date: Jul 2004
Posts: 37
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Re: 454 engine swap
thanks for the response it is a 2 wd
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#6 |
Registered User
![]() Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: 454 engine swap
The motor mount towers are different, but you can use the small block rubber pads as is described by Tx Firefighter here. I did this on my 476 install and it works great. I wasn't able to find the thick "harmonic-balancer" type washers he describes so I used four big "body washers" on each side.
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#7 |
Registered User
Join Date: Oct 2006
Location: Sinchester VA
Posts: 27
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Re: 454 engine swap
On the brackets, make sure you know if you have or going to use a long or short water pump. If you run into problems with brackets, Alan Grove makes multiple brackets. Helped me out when putting power steering in my 67 big block.
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#8 |
Registered User
Join Date: Dec 2006
Location: Rhode Island
Posts: 602
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Re: 454 engine swap
Exhaust of course will be different, and I think probably the torque converter and the converter cover, and the starter as well.
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69 C-10 SWB Fleetside 454/TH400 (For Sale) http://67-72chevytrucks.com/vboard/c...ct=1299&cat=12 70 El Camino 454 TH700 29 Model A 4-DR Sedan Deluxe |
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#9 | |
Registered User
Join Date: Apr 2004
Location: N.E. MO
Posts: 1,749
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Re: 454 engine swap
Quote:
The rubber mounts are the same also, (although a very weak design). SB and BB Chevy engines share the exact same motor mount and bellhousing dimensions. The 454 in my 72 has been sitting on the original SB towers for probably close to 10 years now. A couple years ago the left manifold cracked and I couldn't find a replacement, (for a reasonable price anyway), and finally broke down and modified the left mount tower to clear a manifold a friend gave me.
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72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey |
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#10 |
Farm Truck
![]() Join Date: Aug 2006
Location: Jersey Village, Texas
Posts: 547
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Re: 454 engine swap
So a big block will clear the bottom half of the firewall? I thought the tranny would hit.
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#11 | |
Registered User
Join Date: Apr 2004
Location: N.E. MO
Posts: 1,749
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Re: 454 engine swap
Quote:
Clearing the firewall is another story. First it depends on where your motor was mounted originally. Some are mounted farher forward than others. BB's were mounted in the "forward" position from the factory I'm pretty sure. I had to "clearance" the firewall for the rear part of the right valve cover and a little on the left side also, but I can't remember what exactly was hitting. Clutch linkage is an adventure all it's own if your running a manual trans.
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72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey |
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#12 | |
Registered User
Join Date: Feb 2007
Location: chandler
Posts: 331
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Re: 454 engine swap
Quote:
the picture might be not as great, i took it with my blackberry ![]() Last edited by combustion; 03-09-2007 at 02:07 AM. |
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#13 |
Registered User
Join Date: Dec 2006
Location: Rhode Island
Posts: 602
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Re: 454 engine swap
I believe my 69 came with a 307/Pwr Glide originally. It now has a 454/TH400. There's no evidence of firewall interference or modification. There's at least an inch or two between the heads/valve covers and the firewall.
__________________
69 C-10 SWB Fleetside 454/TH400 (For Sale) http://67-72chevytrucks.com/vboard/c...ct=1299&cat=12 70 El Camino 454 TH700 29 Model A 4-DR Sedan Deluxe |
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