Classic

iTrader: (3)

Car and driver also said that MTI's motor in the supercar shootout was a big-block. And thats not the first time I've seen them call a big cube LS1 a big block. They aren't always the brightest out there.

This is just what I heard, but I believe the LS7 will have 2 valve heads, but the heads will be like mini-C5R designs

Fulton 1

iTrader: (9)

I saw that too and had to chuckle. I'm still amazed at how many people assume that any 427 is a big block - not so much here, but on some other forums (*cough* CF *cough*). Seems to be a tough concept to grasp.

Gloveperson

iTrader: (9)

Same here. I didn't really chuckle, I got angry. Someone shouls write them a letter explaining them simple engine calculations.

-Todd

PSM

iTrader: (2)

I always thought the difference was the spacing of the cylinders The exhaust ports on a BBC were equally spaced where on a small blockthe two inside exhaust were ports close together. Is this any where close?


Because the ole 396 was a BBC yet the 427 was a SBC so CID doesn't make much difference

DietCoke

iTrader: (18)

The difference is the block. A big block is BIG, has BIGGER parts, and BIGGER (physically) heads. With that comes more cylinder spacing, bigger coolant passages, etc. A small block is well, smaller in most/all respects.

z98

The 427 wasn't a SBC.

PSM

iTrader: (2)

My bad, the the 427 was stroked into the 454 wasn't it. Both had a 4.25" bore...

Fulton 1

iTrader: (9)

Yeah, both were 4.25" bore. Here are bore/stroke numbers on most production SBC's and BBC's: http://www.mortec.com/borstrok.htm

z98

Is no one else excited that there may be a 3100 lb 420 hp truck coming from Chevy?

???

I saw a 2WD colorado reg cab short bed yesterday and it got me thinking, if they were lowered and had a nice set of rims/tires on it they'd be pretty nice looking.

I WANT ONE

BurnOut

iTrader: (1)

Z98- that 420 hp Colorado was built basically as a show car... same as the 572" "ZL1" Camaro that John Moss built back in the mid-90's. The Colorado was part of GM's "employee enthusiasm" program. While we may one day see a factory V8 in a Colorado, I wouldn't expect anything near 420 hp...

Sure, it'd be bad ***, but I wouldn't hold my breath.

WS-Sick

That would be nice though....

z98

Just put a gen III motor in a light truck, and I'll take care of the rest.

4.8, 5.3, 6.0, LS2, wouldn't matter.