Why not more 454's?

[Fasglas]

Not to add fuel to the fire, but BBC's are limited RPM wise unless you put a ton of money into them. LSx engines car whine up just as good as anyone's wife.

A performance BBC will rev ever bit as high as an LS motor. I have a 454 BBC with stock high perf GM internals that I take to 7,200 rpm regularly. The old 427 big blocks had no problem reving to near 8,000 with a good valve train and stock high performance GM parts.

You sure about that? The LSx goes to 512 cubes. Like i said you gotta have all your cubes to come close to the LS motors. Im not so sure you seeing the point were all making.

CUBE FOR CUBE LS MOTORS OWN ALL

Maybe that will make it easier to read/understand????

Spoken like a true ricer. You clearly have a lot to learn. As a motor gets bigger you have diminishing returns. Doesn't matter what motor it is. That's why cube for cube an import motor makes more power than a LS motor. And that's why cube for cube a motorcycle motor makes more power than an import car motor. That's why a model airplane motor makes far more power per cube than a motorcycle motor. Are you getting the big picture yet?

Now, as for the comparison between a 500ci BBC and a 500ci LSX. The BBC would win because the LSX motor would be pushing the limits of how many cubes you can stuff in a block that size. The 500ci LS motor is a cobbled together abomination using a deck plate and a bad bore/stroke combo (small bore big stroke). Good if you're building a tractor, if you want to go fast, not so much. The LSX probably has problems with rod angularity and side loading on the pistons, where a tall deck BBC can go much bigger than 500ci and would be cranking out power easier and would be using a one piece aluminum block. Not to mention the BBC could be cheaper to build using off the shelf parts and may even be lighter than the 500ci LS motor. My aluminum 572 weighs less than a cast iron SBC.

What can a 500ci big block do? One has to look no farther than NHRA Pro Stock to find out. Six second quarter miles (current record is 6.509) with 500ci (500ci max NHRA Pro Stock rules) with no power adder. You won't find a LS motor running NHRA Pro Stock because it wouldn't qualify for the field (far too slow). Maxed out, a 500ci LS motor can't even come close!

Even twin turbo LS motors can't run the naturally aspirated NHRA Pro Stock times.

a) the blue font is really making people angry around here

b) that's a nice bbc you have...but i guarantee you have some $$$$ in it. Hell, that oil pan alone was probably 500 bucks.

c) cousin has about 5 grand into his 81 malibu....502, 2 stage nitrous, forged, bla bla bla. Runs LOW 8 on juice, mid 10 n/a. For 5 grand, very few people here would be running 10's, and definately not n/a. HOWEVER, his car overheats nonstop, and gets about 3mpg.

I would guess some of the faster guys here are STILL getting 15mpg+, and drive their car atleast on a semi-regular basis. They don't have to readjust the carb everytime the weather changes, and don't have to worry about a bowl running dry if they floor it.


Each has its advantages, if I was making a pure drag car, I'd probably lean towards the BBC, but for a daily driver, ls motor is the way to go.

Sounds like your cousin needs a bigger radiator and/or better cooling fans. Or maybe he doesn't care because he never intends to drive it very far.

Actually when you start running quick a carb takes far less tinkering than EFI does. A carb is just as quick and it's cheaper.

I agree, for a daily driver it's hard to beat the newer cars performance and mileage. But when you want to get serious about going fast, it's much more cost effective to move on to a big block and a carb.

There's a reason why the LSx has been dubed "motor from god".

I guess that makes the BBC god. lol LS motors are great little motors, but when you want to get really serious the LS takes a back seat to the big block.

it will never happen, he is a talker... just like most bench racers.... all about what it COULD do... and never anything on what it WILL do...

You're right. These internet races never happen. That's why you're talking like a big shot when you'd have no chance of winning.

Cube for cube, with the same bore and stroke per motor, Im pretty sure the LS would lay down more power. Even the L92 heads straight from the factory already flow as much as most old school big block heads. Both are great motors, but a bbc is just too heavy imo

See above.

another point to bring up is, i dunno about where u guys live but if i wanted to take my 07 truck and throw in a BB with a carb i would not be able to get it licensed or pass smog. So for most people on here we'd run LS motors because its new technology to go with our newer trucks. Plus an LS motors weighs less then a BB, just sayin.

You folks in the republic of Kalifornia can't do anything because big brother always has you under his thumb. lol j/k



This is my last post on this message board. Too many closed minded people here. So have at it, rake me over the coals (even though I have two LS vehicles) and march on blinded by the light of the LS truck.