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Quote:

Originally Posted by FETorino (Post 466859)

I got you covered on two of the three. I may even run Dino Oil in mine just to go with the theme.:D

:popcorn2:

http://ecx.images-amazon.com/images/...500_SS500_.jpg

:popcorn2:

Quote:

Originally Posted by compos mentis (Post 466810)

And this thread had gotten off to such a good start...

lol

Hey, Penny went through 4-5 engines.. it's just the nature of what I do..

And for handling, the big-block is a LOT of weight to work around.. but who knows, if it works well I certainly won't change it..

But deep down, I am an LS guy.. still love me?

Quote:

Originally Posted by ratman67 (Post 466864)

i waiting to see the dyno numbers from steves engine with the carb and efi.....i bet you will be surprised how well the carb makes hp

Every test like this I've done (carb to EFI) was just how you stated..the carb made more peak, the EFI made more low end.. the benefits to the EFI come with starting and it's ability to tune based on conditions.

But the carb ALWAYS makes more power.. always..

Quote:

Originally Posted by Sparks67 (Post 466848)

That is very true, a friend of mine has Dart Merlin block and in the past it was built with aluminum rods and Lunati Pro Series crank. Dynoed around 865 hp with high compression 510, but he rather have an LS motor. Just to expensive to change over now. Currently, it is being rebuilt, but he has to inject lot of NOS to be competitive with the LSX engines.

Stielow's Mayhem 427 engine has less cubic inches and the LS9, still made more hp than a big block on pump gas. Not sure why anyone want a big block.

Jeff

I would guess that Stilows blown engine (with the intercooler and related "stuff") is creeping towards NA big-block weight.. my guess is just over a 100 pounds more for the big block. We will weigh it all to see when we build it.

But, it's hard to beat the torque production, especially down low, of a huge displacement big-block.. and blowers get hot and stop making as much power..

Quote:

Originally Posted by Steve1968LS2 (Post 466933)

But deep down, I am an LS guy.. still love me?

Yeah sure...if you're offering a discounted CP subscription.

:D

I get the whole LS thing.

Had one in our AWD Buick Rainier, the 5.3L. A lot of trouble free miles and it was impressively smooth.

But say in a Camaro, it seems some are willing to give up the advantages an LSX has for the unmistakable and irreplaceable noise a BBC makes. Some mention they strongly prefer the look a BBC has as well, so that's a factor obviously too.

Bottom line IMO is that Mopar, Ford and GM rodders all have plenty of new tech/old skool motor options.

Quote:

Originally Posted by compos mentis (Post 466944)

But say in a Camaro, it seems some are willing to give up the advantages an LSX has for the unmistakable and irreplaceable noise a BBC makes. Some mention they strongly prefer the look a BBC has as well, so that's a factor obviously too.

Bottom line IMO is that Mopar, Ford and GM rodders all have plenty of new tech/old skool motor options.

SBC is the same way for many including myself. IMO, a cammed LTx/SBC sounds better than an LSx. The LSx engines are fantastic engines but it's good to see variety and for people to try out alternatives. Having options makes the world go round. I really liked the original plan with TrackRat using the 5.3 but this BBC is a great idea as well.

Love the color Steve, can't wait to see everything done!

Quote:

Originally Posted by Sparks67 (Post 466950)

Try 200LBs, you need to use an aftermarket block for that bore. The weight is 270lbs bare, now add your crank, rods, heads, etc. It is a tank! My friend's 1969 Camaro SS (Original 396) car, he drag races it. He had several big blocks in it. 396 with 500hp, 496 with aluminum rods and lunati crank. The 496 was rather cool, because it rev to 8000 rpm with those rods. (I have been in the car, when it revved that high). I think it was around 775hp. The 454 block lasted a few years, so he went to merlin block. He his biggest complaint is the weight.

I have to estimate the weight of LS7 bare, but probably around 100 to 120lbs. I have a supercharged LS3 418 as well, but blower is not much weight. Your intercooler heat exchanger is just an extra radiator outside of radiator. You also are redistributing that added weight, which is not much to other parts of the car. While with the big block, it will be with the engine.

My little LS3 418 with Harrop TVS 2300, made around 787 ft/lbs of torque at 3900 rpm. I am still making around 640 ft/lbs of torque to about 5600. The dyno had issues of keeping up with the torque, but it was running rather cool. All engines get hot Steve, but that is why you depend on a good design for cooling.. All my friends have big blocks. Yes, the do have a unique sound, but you feel it. I had it before in another engine...

Jeff

I was talking an LS with a blower (and the associated stuff) compared to the carb big-block.. but you could still be right.. I will do weights to see.

And the LS engine I was going to run had the LSX iron block, so the weight was even closer.

But yea, big-blocks are heavier.. :)

My 67 is an original 396 car retaining the original 396 that has been worked over by me and is putting out a little over 600hp. You just need to move the engine around a little to displace the weight. I think if my memory is correct, the difference between a loaded supercharged LS and a loaded built Big Block using aluminum heads is around 145lbs. I love LS engines but it seems every body has one so I'm sticking with the big block. I have an LS7 that I was going to use but it can sit. My car is undergoing a face lift and will be getting a new 427 supercharged big block engine and a few other goodies.

Hope to hit the track in May. My other track toy has taken a turn for the worst with cancer.

The weight killer is the aftermarket 4.5" bore blocks. They are awesome platforms and super stout but dayum they are heavy. Like 260lbs or something. The aftermarket aluminum blocks are ~160 I think. The ZL1 comes in at a flyweight ~110. I think the extra 50cubes available with the aftermarket block can more than offset the 50lbs though for even money on the aluminum blocks.

IIRC I saw the weight on an LS blower kit recently and it was over 100lbs. So surely a "basic" aluminum BBC build is pretty close to an LS w/blower, intercooler, etc. Can't wait to see the actual numbers in CP.