Chevrolet Big Block vs Little Block
 

How much does a chevy big block weight over a small block? Anyone swap and know the difference?

Thnaks

Re: Chevrolet Big Block vs Little Block
 

Steel head for steel head about 100 lbs. Aluminum head big block vs steel head small block is about 15 lbs if I remember correctly.

Re: Chevrolet Big Block vs Little Block
 

396/427 BBC weighs 685 iron head/ iron block/iron intake
454 about 675 iron/iron/iron
SBC chev about 575 iron/iron/iron---take about 40 pounds off for alum int manifold or 535

Re: Chevrolet Big Block vs Little Block
 

Thank you

Re: Chevrolet Big Block vs Little Block
 

????

When I converted my '67 Camaro from a Z-28 (D/S) to an SS w/396 375 (A/S), the car weighed 180 lbs more when finished. That was in 1985 so the engines used stock rods, cranks, pistons and iron water pumps. Consider SS hood with cast louvers, SS emblems and 396 emblems added, but removal of factory 4-piston disc brakes w/booster replaced by factory drum brakes. Additional bars were added to the roll bar and 2" x 2" .083" subframe connectors were welded in at the same time. Maybe some additional weight in the headers. All food for thought.

Re: Chevrolet Big Block vs Little Block
 

Dwight,
I did the disc brake change on my 69 Z-28 in 1970. I used all the front suspension on a 6 cylinder donor car. My old faded memory says it was 38 lbs different in the disc set up & that included the lighter idler arm, drag link,pittman arm & manual steering box from the 6 cyl. car.