engine
Le Mans Master
Joined: Jul 2006
Posts: 8,117
Likes: 104
From: charlotte north carolina
you'll need the externally balanced flex plate or flywheel. if it's a 4 speed you'll also need the 621 bellhousing to fit the 11" flywheel. i don't know(but i'd like to) if a 10 1/2 clutch will bolt to a 11 flywheel.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette
Pouria Savadkouei
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Racer
Joined: Aug 2012
Posts: 424
Likes: 3
From: Presently working under contract in Alabama
I'm not sure if you will need a larger radiator or not, but it is something to consider based upon the type of driving you will be doing. If not the radiator then maybe add and electric fan?
Racer
Joined: Nov 2008
Posts: 366
Likes: 7
From: Mobile Al
Did the same 30 years ago. Get the right rad shroud, pulleys, headers and drop it in. I used the stock rad, springs and the bellhousing that came with the car, although I did put a new clutch on it. My motor had the balencer and flywheel already on it when I got it. When we were ready to set it in from the time I stopped the org 350 after driving over to my friends shop untill I started the big block it took alittle over 4 hours. Hardest part was driving back home thru town with the open headers. So if you ask me it really isn't a "big deal"
Safety Car
Joined: Sep 2007
Posts: 4,443
Likes: 326
From: Indy Indiana
along with the taller hood, you will need to get it painted and fitted to match color and finish. good luck getting a shop to do that for you.. hood and paint probably add 1500-2000 to the project ... only if they can match it well..
engine itself, shroud, pulleys, belts, manifolds, exhaust, heavier front springs, heavier front sway bar, higher capacity radiator, wires, hoses, flywheel, damper, bellhousing..
while it is out.. clutch, restore engine compartment, rebuild tranny.. and more
at best a winter project and 10K, unless you pay someone, then 15K
engine itself, shroud, pulleys, belts, manifolds, exhaust, heavier front springs, heavier front sway bar, higher capacity radiator, wires, hoses, flywheel, damper, bellhousing..
while it is out.. clutch, restore engine compartment, rebuild tranny.. and more
at best a winter project and 10K, unless you pay someone, then 15K
Le Mans Master
Joined: Jan 2006
Posts: 6,497
Likes: 136
From: Butler Pa
I swapped in a 502 about 5 years ago. Used the SB radiator, springs, clutch fan and shroud. You'll need exhaust, accessory brackets, pulleys, belts, hoses and a case of beer.
Drifting
Joined: Aug 2005
Posts: 1,443
Likes: 65
From: Wauconda IL
I think the weight difference between a cast SBC and a cast BBC is only about 100-110 pounds?
Slap some aluminum heads, intake and headers on the BBC and you can probably get away with using the stock SBC springs IMO.
Slap some aluminum heads, intake and headers on the BBC and you can probably get away with using the stock SBC springs IMO.