Originally Posted by HioSSilver

Gm's lsx race engine makes more power than their 572 race engine. Now the only proper way to do the comparison is to have both go threw the same development process's and durability process's. I would assume that's what gm did when they built these crate engines. The result was a more powerful lsx than bbc.

Now could someone go out here and build a more powerful version of each??? More than likely, but would both then have similar durability?? Who knows.

Do you see my point?

Originally Posted by evangto87

But which has the potential to make more power? We arent comparing off the shelf crate engines. We are talking max effort.

Originally Posted by HioSSilver

I don't know. You have to keep them at the same durability levels for a accurate comparison to me. I could care less about max effort anything unless it's a bolt-on car.

Hell I could care less about anything I can't/won't dd for that matter. I have no use for it.

Originally Posted by evangto87

To answer my question... its BBC...by a landslide. And the reliabilty/durability is determined by the same things any other build comes from. Parts used and if its properly setup.

Originally Posted by HioSSilver

Cool car there. Gitter done with the 4speed.

Adam thanks for replying for me. You have better edicut than myself...lol

The old stuff sucks...I hate a ******* carburetor. I go out and start my car in 5* weather and never touch the gas.....carburetors suck. Solid rollers suck on the street and everyone knows it. 12.5 compression I'm sure performs flawless on pump gas.


So your car is 3900-1300=2600 for jpc's car. That's 550~lb lighter than my raceweight.....**** me I bet I could get over 135 at that raceweight....thanks for pointing that out. It just evolved a little more.

By the way their car would be a engine/trans swap.....since you like goin there so much.

It probably good that you gave it away. Clearly you did not know wtf you were doing it you had much more power than me and went the same speed. Were you skeered of it??

All this and your trying to compare it to my bolt-on engine....really?

So you might run 13's in it then?? Damn, I was giving you the benefit of the doubt.

It might just out run your shitbox

For real....when are guys gonna stop trying to compare a dd to a racecar??


The ls7 made 505. Why don't you do that with tq? While your at it do it with engine weight to see which one makes more per pound. Then you can measure them and calculate their outside cubic dimensions and maybe to a power per cubic dimension....that would be cool!!!

Originally Posted by HioSSilver

The problem is that I don't care. You trying to get your answer out of someone who is ONLY interested in useing production parts to go fast. Aftermarket heads/bolcks/cranks/rods don't mean **** to me. Some things we have to refer to the aftermarket to get. But the basics of the any engine I ever tinker with will be production based parts. So to me that's as max effort as it gets.

The last engine I did was a 400 sbc patterened around a 350 zz3 crate engine, L98 heads and all. The only thing aftermarket in that engine was the pistons(because you have to), cam(you don't have to but it helps) and the intake which was patterned after the old 70 lt1 intake but with modern provisions....and it ran great.

I don't buy aftermarket stuff much and I like porting my own ****....even though I bought a mamo'd intake for my ls7.....I actually regret that.

Originally Posted by HioSSilver

Cool car there. Gitter done with the 4speed.

Adam thanks for replying for me. You have better edicut than myself...lol

The old stuff sucks...I hate a ******* carburetor. I go out and start my car in 5* weather and never touch the gas.....carburetors suck. Solid rollers suck on the street and everyone knows it. 12.5 compression I'm sure performs flawless on pump gas.


So your car is 3900-1300=2600 for jpc's car. That's 550~lb lighter than my raceweight.....**** me I bet I could get over 135 at that raceweight....thanks for pointing that out. It just evolved a little more.

By the way their car would be a engine/trans swap.....since you like goin there so much.

Originally Posted by HioSSilver

The problem is that I don't care. You trying to get your answer out of someone who is ONLY interested in useing production parts to go fast. Aftermarket heads/bolcks/cranks/rods don't mean **** to me. Some things we have to refer to the aftermarket to get. But the basics of the any engine I ever tinker with will be production based parts. So to me that's as max effort as it gets.

The last engine I did was a 400 sbc patterened around a 350 zz3 crate engine, L98 heads and all. The only thing aftermarket in that engine was the pistons(because you have to), cam(you don't have to but it helps) and the intake which was patterned after the old 70 lt1 intake but with modern provisions....and it ran great.

I don't buy aftermarket stuff much and I like porting my own ****....even though I bought a mamo'd intake for my ls7.....I actually regret that.

Originally Posted by HioSSilver

The problem is that I don't care. You trying to get your answer out of someone who is ONLY interested in useing production parts to go fast. Aftermarket heads/bolcks/cranks/rods don't mean **** to me. Some things we have to refer to the aftermarket to get. But the basics of the any engine I ever tinker with will be production based parts. So to me that's as max effort as it gets.

The last engine I did was a 400 sbc patterened around a 350 zz3 crate engine, L98 heads and all. The only thing aftermarket in that engine was the pistons(because you have to), cam(you don't have to but it helps) and the intake which was patterned after the old 70 lt1 intake but with modern provisions....and it ran great. Awesome tq, it actually spun my diff on the axle tubes, ripped the driveshaft out and busted the transfer case tail housing in one shot....lol

I don't buy aftermarket stuff much and I like porting my own ****....even though I bought a mamo'd intake for my ls7.....I actually regret that.

Originally Posted by ohioborn80

SO using factory parts who is going to win with the 5th gen ls3 vs and GT5.0?

Bolt on SC kit right from Ford, Boss everything fits 5.0 including heads, forged internals, factory tunes for all that also as ford has dealers that will tune.

LS3, h/c and done from factory. No tune from factory to help with all that.



Oh let me guess now your going to say can only do n/a vs /na. And can use aftermarket tune, and get to use aftermarket internals cause GM don't have any for LS3...

Originally Posted by evangto87

if thats the case, i picked the right car for that made up class since all my **** literally is stock...not just a stock part.

Originally Posted by ohioborn80

Ya after you swap tranny for a 6r80 since its a stock Ford part.

Originally Posted by evangto87

you remove the front sway bar in either of your cars? How bad did it effect handling if you did?

Originally Posted by ohioborn80

In both cars. When I had CJ springs on my auto it got a little squirly/loose above 120-130 with darg set up and 130-140 with 20's.

Lowered I don't even notice it gone.

Both ways it transfferred weight better. I got rid of it, the K brace, and did a lighter radiator support.

Front Sway Bar & Fasteners-----------------15.80lbs.
Z-Brace & Fastebers-------------------------5.86lbs.
^Plastic Shield-------------------------------1.66lbs.
OEM radiator support,...........16.55lbs

BMR rad support,.....................5.5lbs

Originally Posted by evangto87

I have all of that removed along with the bmr radiator support. I just have my front hotchkis sway bar in.

Originally Posted by ohioborn80

I was just posting all weights just incase. IS your car lowered? Looks like it. If so take it off. LOL

Originally Posted by evangto87

i have factory roush springs on the car. They are slightly lower then boss springs... which are slightly lower then GT springs... lol. There no eibach sportlines... but they did lower the car an inch in the back over the boss springs and 3/4 an inch in the front.

The picture u see is actually with the stock boss springs in the front. Its lower in the front now