572 cubic inch GM crate engine...question
#1
TECH Veteran
Thread Starter
Join Date: Dec 2001
Location: Ft. Lauderdale, FL, USA
Posts: 4,117
Likes: 0
Received 0 Likes
on
0 Posts
572 cubic inch GM crate engine...question
Last night on "Rides" they showed the build-up of that motor part by part at the GM facility. It was the 620 hp 9:1 compression 572 engine. Thats about 525 RWHP.
They said they offer a 12:1 compression model that has 720 hp, so about 610 RWHP.
How is it that a 572 cubic inch engine with 12:1 compression makes only about 100 RWHP more than my MUCH smaller 436 11.3:1 cr, streetable, pump gas engine. Better heads, cam and better intake and I'm right there. And only 50 RWHP or so more than some of the other more powerful LSx based engines that are pump gas a daily drivers. (ie: LGM 06' Z06, Vince)
I would expect a monster BB to easily be putting down like 700-750 RWHP with no problem. MORE Performance has a 427 LS6 engine with 725 FWHP, more than a 572 BB race crate engine...doesn't make sense.
.
They said they offer a 12:1 compression model that has 720 hp, so about 610 RWHP.
How is it that a 572 cubic inch engine with 12:1 compression makes only about 100 RWHP more than my MUCH smaller 436 11.3:1 cr, streetable, pump gas engine. Better heads, cam and better intake and I'm right there. And only 50 RWHP or so more than some of the other more powerful LSx based engines that are pump gas a daily drivers. (ie: LGM 06' Z06, Vince)
I would expect a monster BB to easily be putting down like 700-750 RWHP with no problem. MORE Performance has a 427 LS6 engine with 725 FWHP, more than a 572 BB race crate engine...doesn't make sense.
.
Last edited by Quickin; 01-11-2006 at 04:02 PM.
#2
8 Second Club
iTrader: (3)
Keep in mind these are CRATE motors. They're designed for the guy that wants to drop it in his car and just put gas in it or close to it and be ultra reliable. They're far from an all out custom race engine designed to make max. HP. Hell, my very basic 496 makes almost 100 hp more than the 572 race vesion.
#3
TECH Veteran
Thread Starter
Join Date: Dec 2001
Location: Ft. Lauderdale, FL, USA
Posts: 4,117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 1fastWS6
Keep in mind these are CRATE motors. They're designed for the guy that wants to drop it in his car and just put gas in it or close to it and be ultra reliable. They're far from an all out custom race engine designed to make max. HP. Hell, my very basic 496 makes almost 100 hp more than the 572 race vesion.
Where else are they going to do to get more power from that crate engine. What else can be done for them to put out more EXCEPT for raising compression? Cam upgrade only I guess? Because our compression is less than that 12:1 572 engine.
.
#5
On The Tree
iTrader: (2)
Join Date: Feb 2005
Location: Tempe, AZ
Posts: 161
Likes: 0
Received 0 Likes
on
0 Posts
Exactly.
Not to mention the motor and heads are old designs and are no were as effcient as the LS style motors. We also dont knwo the specs or the cam or how well the heads flow. Just becasue it is a big motor doesnt mean it will make huge power. This is apples to oranges.
Not to mention the motor and heads are old designs and are no were as effcient as the LS style motors. We also dont knwo the specs or the cam or how well the heads flow. Just becasue it is a big motor doesnt mean it will make huge power. This is apples to oranges.
Trending Topics
#8
On The Tree
iTrader: (2)
Join Date: Feb 2005
Location: Tempe, AZ
Posts: 161
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Quickin
alright. So I guess a BBC made for the street as far as a pretty good idle goes could easily make 750-800 RWHP on pump gas?
Are we talking N/A or going with FI?
#9
TECH Fanatic
iTrader: (9)
Join Date: Feb 2002
Location: Morton IL
Posts: 1,126
Likes: 0
Received 0 Likes
on
0 Posts
If you put quality heads on a BBC (i.e. some nice AFR's), and cam it properly, it will stomp all over any lsx.
My next motor will be a short stroke, big bore (472ish ci) solid roller, and it will make a ton of rwhp n/a on pump gas.
My next motor will be a short stroke, big bore (472ish ci) solid roller, and it will make a ton of rwhp n/a on pump gas.
#10
9 Second Club
iTrader: (119)
3 words for you.....Fast Times Motorworks! they offered to build me a 588 or 598 BBC, n/a pump gas motor that would cost about the same as that 572 race version, ($19-$20,000), with fuel inj., and make 950 fwhp!!! did i say using pump gas? well, i'm going a little bit of a different route now, but the motor of choice is still Fast Times based!
#12
TECH Enthusiast
iTrader: (6)
Join Date: Apr 2005
Location: Socal
Posts: 730
Likes: 0
Received 0 Likes
on
0 Posts
Who cares if its a small difference and only makes 100 more or less ...did you see the motor abuse the tires on the chevelle and the sound "sigh" If you need more add 200 shot lol..GM has a quality drop in crate motor. If you wanted more i am sure you can spend a grand more and get a roller valvetrain. if you heard the guy making the motor they use the same heads as the 12:1 uses. Did I mention what that motor did to those tires....
#14
TECH Veteran
Thread Starter
Join Date: Dec 2001
Location: Ft. Lauderdale, FL, USA
Posts: 4,117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 8GTOKLR
Who cares if its a small difference and only makes 100 more or less ...did you see the motor abuse the tires on the chevelle and the sound "sigh" If you need more add 200 shot lol..GM has a quality drop in crate motor. If you wanted more i am sure you can spend a grand more and get a roller valvetrain. if you heard the guy making the motor they use the same heads as the 12:1 uses. Did I mention what that motor did to those tires....
I didn't know you could send them extra cash and get a solid roller set up and better heads from the factory with 12:1. Now you'd be talking 800-900 hp.
#16
TECH Veteran
Thread Starter
Join Date: Dec 2001
Location: Ft. Lauderdale, FL, USA
Posts: 4,117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 1fastWS6
This is a good article from Hot Rod Mag. 1000+hp, pump gas
http://www.hotrod.com/howto/113_0206_1000/index.html
http://www.hotrod.com/howto/113_0206_1000/index.html
Can that engine be made with fuel injection and make the same power?
.
#17
9 Second Club
iTrader: (119)
Originally Posted by Quickin
Holy **** man, I love that sun-bitch. Too bad that won't fit into an F-Body.
Can that engine be made with fuel injection and make the same power?
.
Can that engine be made with fuel injection and make the same power?
.
BBC "WILL" fit into an F-body. that's a big part of how this forum got started, because it was my original plans to it. it's been done before by several others. and if you get the tune right, sure, you'll make the same power with EFI, and be a ton more efficient and divable too.
#18
TECH Veteran
Thread Starter
Join Date: Dec 2001
Location: Ft. Lauderdale, FL, USA
Posts: 4,117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by PRAY HRD
BBC "WILL" fit into an F-body. that's a big part of how this forum got started, because it was my original plans to it. it's been done before by several others. and if you get the tune right, sure, you'll make the same power with EFI, and be a ton more efficient and divable too.
Fast Times hasen't returned my e-mails yet. I see they advertise the 1000 hp/940 torqe engine on their websire home page. Is this basically the same type of engine as in the article? Do they tune it with fuel injection if you want that?
.
#19
9 Second Club
iTrader: (119)
you'd have to talk to them about the specifics. and i can't imagine that there is a kit for this. there are a couple sponsors that sell k-members either with BBC/SBC mounting points, or without and mounts at all for a front and mid plate setup. headers would likely have to be fabbed. the only person i know off the top of my head who'd done this with success is BradyZ. find him and you'll find some great answers. and as far as i know, Fast Times closes at 5pm central dialy and closed on the weekends. but don't take my word for it.
#20
TECH Veteran
Thread Starter
Join Date: Dec 2001
Location: Ft. Lauderdale, FL, USA
Posts: 4,117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by PRAY HRD
you'd have to talk to them about the specifics. and i can't imagine that there is a kit for this. there are a couple sponsors that sell k-members either with BBC/SBC mounting points, or without and mounts at all for a front and mid plate setup. headers would likely have to be fabbed. the only person i know off the top of my head who'd done this with success is BradyZ. find him and you'll find some great answers. and as far as i know, Fast Times closes at 5pm central dialy and closed on the weekends. but don't take my word for it.
He said it can be done too, I'll be chating with them this week.