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Hey guys, I assumed since this is somewhat about performance/a future build, this would be a proper area to ask about.

I know many of you have done engine swaps, so how involved do you believe this engine swap would be from an original 305 setup? (Ignore the fact its ebay, I'm just looking around :D )

https://www.ebay.com/itm/BBC-Chevy-...130528?hash=item4d63fee360:g:6w0AAOSwjghZx98x

I'm aware of replacing the trans, drivetrain, and suspension with this size engine/HP, also having to modify the hood to fit and engine bay a bit, but any advise/suggestions on those as well would be greatly appreciated! (AKA experience with setups, links to parts/other builds, etc.)

Sorry if I seem way out of the ballpark on this one, I'm just pondering my best options for a future ~1000whp/wtq build for my 77'. Thanks in advance! -Chris :beers:
 

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Well Chris it isn't like I haven't done this over a hundred times or more.

The only good thing working for you is the '77 Nova used a thrid gen Camaro front sub frame so since the BBC was offered as an option in the Nova through 1970 and the Camaro through 1973 there are parts off the shelf still available to make this a drop in and bolt up motor swap.

First thing of note is the motor. You want a 454 based build if it is a budget built car or a siamese Bow Tie, Dart, or Brodix block if you are more concerned about ET and trap speed. Because a BBC makes less than that of the SBC in terms of power per cubic inch, you have to think big (in the days of high octane leaded pump gas a BBC made more than a SBC but the octane of the premium pump unleaded gas is now four octane numbers less than the octane rating of leaded regular grade gas). Because of this you need a 496 cube BBC as a starter motor;

https://www.jegs.com/i/Blueprint-En...KBKFR_m1aav_FthsdnoWlN7aTNCu5fFgaAqPuEALw_wcB

or a 632 if you are getting serious.

https://blueprintengines.com/products/gm-632-ps

With a tripling of torque you will need to have stronger tranny (4L80e) and a stronger rear end:

http://www.moserengineering.com/moser-60-musclepak-muscle-pak-pack-dana.item

You will need headers that fit (Lemons makes a set for the Nova and a 632 for $1,500)

http://www.lemonsheaders.com/prices.htm

and because you are making three times the horse power you need to keep it cool so you are going to need a MUCH bigger radiator.

http://www.griffinrad.com/load_deta...roup_model=Nova&select_Sub_Group_Engine=33.25 x 18.62&select_Sub_Group_Transmission=TOC&key_id=8-70008

Biggest problem you are going to have is getting the power to the ground. A 1967-'68 Camaro can swallow a 14 inch wide slick just by cutting the inner fender seam lip) out of the body. A Nova is limited to a 9 inch wide slick. Though rubber compounds have improved since I used to race Firestone compound W tires that five inch difference in contact patch difference is going to be hard to make up.

By the way if you are thinking of a 396 buy a SBC 400 instead and reuse your 305 valve covers as a 406 looks just like a 305 from the outside and are cheaper to build than a 396.

https://www.jegs.com/i/Blueprint-En...TATlcaRPryOVMwgcSJlyDQJOIKpFXi0QaApbsEALw_wcB

Big Dave
 

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The only good thing working for you is the '77 Nova used a thrid gen Camaro front sub frame so since the BBC was offered as an option in the Nova through 1970 and the Camaro through 1973 there are parts off the shelf still available to make this a drop in and bolt up motor swap.
Actually the subframe is a second gen F body not a third and the 305 mounts you have are all that is needed to bolt the engine into the car. The engine mounting is offset to the passenger side by design so no special mounts are needed like in the 68 - 74. Hood clearance will not be an issue unless it is blown or running a tunnel ram.
 

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Sorry about that Chris.

I have no idea where the Third Gen Camaro came from; other than I have three project Camaros in the back yard, and a tree fell on one of them a couple of days ago crushing it (no real loss as it was a V6 powered LT Berlinetta).

The second gen had issues with hood clearance because it was styled after an Italian sports car, that shall remain unmentioned (though they are all painted red to show off the yellow and black prancing pony). Your Nova doesn't share that long sloping hood line.

Good news is it fixed all of the steering geometry issues found in the first gen Camaro and had bigger brakes in the latter years. Your suspension is similar to the 1975-'77 model year Camaro which suffered from a Ford idea; by which I mean, GM kept changing front suspension parts for some reason.

Big Dave
 
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