Big Block V8 In SLC Possible?

[Garland Robinson]

Hey guys,

I'm nearing the financial readiness to start seriously considering building my own SLC.

I'm mulling over engine choices, and I know that I want a V8. I'm considering going with a LS, but I really want my SLC to very special.

I'm thinking of doing a 572: GM Performance Parts 12498827 - Turn Key ZZ572/720R, 720 HP 572 Drag Race Crate Engine | SDParts - 1-800-456-0211

This being a tall deck engine block, do you guys think that there will be fitment issues?

 

[Jack]

Welcome to the forum Garland, I'm sure Fran could answer your questions. Enjoy!
I'm using an LS engine in mine (LS1), no issues with the LS7 or derivatives either.

 

[Eric]

Welcome, Garland

Jack's right, Fran is the man to answer that question, but I believe he designed the engine bay to handle just about whatever engine/transaxle combo you want to run.

FYI, you can get 720 HP from a much smaller engine relatively easily, perhaps even for less money. You might want to take a look at some of the engine builders, unless having a 572 is part of how you want to make your SL-C special.

Eric

 

[Doc Kaler]

Welcome Garland!

I believe Alex has a tall-deck block in his SLC. I have a measly LS7.....

 

[Alex]

I can just see Fran rolling in his chair thinking 'I've got one nutbar who wants a carb'd LS and doesn't care if it sticks out the window, now i've got somebody who wants a big block in an exotic' :laugh:

Without knowing anything about anything, I'd ask Howard his thoughts - he has a SBC and would be able to give you an idea of any mods needed to accomodate it (or Fran since he's probably got a few kicking around in the shop)

 

[Howard Jones]

The SBC I put in mine fit fine. If I did it again I would use a electric remote waterpump and be done with it. There is also at least one other with a SBC it it. BBC typically fit where SBC do. The difference to be concerned about it height. Your are not going to fit a tunnel ram in there but I think a RPM performer and a Holley will fit with a custom air filter. Watch my build log I am going to install a carb this year and make something up for a air filter then.

 

[Alex]

The SBC I put in mine fit fine. If I did it again I would use a electric remote waterpump and be done with it. There is also at least one other with a SBC it it. BBC typically fit where SBC do. The difference to be concerned about it height. Your are not going to fit a tunnel ram in there but I think a RPM performer and a Holley will fit with a custom air filter. Watch my build log I am going to install a carb this year and make something up for a air filter then.

I thought you ran into clearance issues with the rear crossbeam?

If you elongated your engine 3'' would everything still fit?

Btw, something to consider for an air filter is a carb plenum - that's the direction I'm leaning towards.

 

[Fran Hall RCR]

The only issue I see is the induction system height....but there is an SL-C owner that has generously offered to cover the cost of special tooling to make a "carb" style rear scoop to replace the rear window...

 

[Dave]

The only issue I see is the induction system height....but there is an SL-C owner that has generously offered to cover the cost of special tooling to make a "carb" style rear scoop to replace the rear window...

I'd like to know if stuffing an IC under this scoop may be an option.

 

[Alex]

Btw, that'd be awesome if you could stuff a big block in here. Mmmm, big block torque just can't be beat!

I'd like to know if stuffing an IC under this scoop may be an option.

IC = intercooler?

That would be an unusual place to stick one, but I don't see it wouldn't work? (especially with your engine - if I recall the last picture I saw it looked tiny inside that massive engine bay)

The Australian car has a type of air-box setup in the scoop that is functional, so I guess anything is possible.

 

[Howard Jones]

Here's a link to the dimensions of SBC, BBC, LSX

Engine Dimensions

 

[Garland Robinson]

Thanks for all the info guys and the warm welcome. I'm probably going to end up going with a 572 or similar engine. I know that the LS's will fit, make the same amounts of power, etc.

But the engine choice is really part of how I want to make my SLC special and standout from the huge masses of owners

 

[Howard Jones]

Great! We would love to have you in the build log area when you move forward. I am trying to fully document my SLC build there so that others can use it for some reference. I know others are doing the same. Together we can really help a new builder with his/her build and get to know each other.

Good luck, have fun!!!!

 

[Juice Lucas]

Hey Garland I live in metro Atlanta so if you ever need a set of spare hands let me know man.

 

[Cliff Beer]

Hi Garland,

Sounds challenging and ambitious! Good for you!

What kind of transaxle are you planning on using by the way?

 

[Damian]

Alex the GTM guys have a split intake that is pretty trick and exactly what you are looking for.

 

[Ron Earp]

Good choice and interesting. LS motors are in so much stuff they practically ship and install themselves. Nice to see a change of pace.

Transaxle is going to cost a lot more than the motor though. 572 inches (not the GM crate engine I hope, you can build something better for the money) will produce a lot of twisting force, all through the rev range.

 

[Damian]

The FF web site is CRAP but I know you are on there so just search some OLD posts and you will find it (I HOPE)

 

[Garland Robinson]

For the transaxle I was thinking of tracking down the guys who did the tranny for the monster MT900S with the Nelson Racing twin turbo engine in it. Anyone got any leads on them?

 

[Fran Hall RCR]

Carquip did them....the boxes were seriously expensive though ...Custom G97/50...997 twin turbo units....There is a sequential gearset available but it needs refreshing every 30 hours...race only obviously.

I am sure there will be another box available in the not too distant future that will meet your needs...other than a Ricardo that is.