Small Block & Big Block Chevy Specific - BBC + Turbo=??

I've always wanted my car to go the turbo route one of these days and now that its a BBC I was wondering what kind of pictures are out there with this setup. Anyone got anything? Maybe Outlaw, you seem to always have what I'm looking for haha

I've always wanted my car to go the turbo route one of these days and now that its a BBC I was wondering what kind of pictures are out there with this setup. Anyone got anything? Maybe Outlaw, you seem to always have what I'm looking for haha


HAHAHHA.. nope.. sorry not on this one. I think BBC turbo deals are just a waste of time and money. With SBC/SBF- turbo motors making over 2000 hp with the right parts. that’s more then the avg guy would ever need or dream of. I feel another problem with BBC/turbo deals is. Its not that you can or will make more power with a BB over a SB when it comes to turbo. It’s really about making a well balanced combo. If the CI is to big the turbo will not be able to create boost without major lag and even after it does it will run past being efficient and not make the power a more balanced combo would. The one big advantage of a BB combo is having more head bolts then a SB motor does.

Wow im babbling now.. anyways… nope no pictures

HAHAHHA.. nope.. sorry not on this one. I think BBC turbo deals are just a waste of time and money. With SBC/SBF- turbo motors making over 2000 hp with the right parts. that’s more then the avg guy would ever need or dream of. I feel another problem with BBC/turbo deals is. Its not that you can or will make more power with a BB over a SB when it comes to turbo. It’s really about making a well balanced combo. If the CI is to big the turbo will not be able to create boost without major lag and even after it does it will run past being efficient and not make the power a more balanced combo would. The one big advantage of a BB combo is having more head bolts then a SB motor does.

Wow im babbling now.. anyways… nope no pictures

"If the CI is to big the turbo will not be able to create boost without major lag...."

Huh??? :confused:

Not sure where you came up with that?

How about 1710 CID and turbocharging??
http://www.bcam.net/engines/allison.htm

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I thought this was a car forum and not a plain forum ....And besides airplains normaly don't run over 3000 rpm....

Well Don gets a little lost at times ;) As long as the Turbo is matched all is well and HUGE HP numbers will result ;)

Well Don gets a little lost at times ;) As long as the Turbo is matched all is well and HUGE HP numbers will result ;)

That's just plane silly !:jest:

I just used the Allison as an extreme example of a BIG block.

You know "I" under stand that but old school Chevy guys are starting to act like Mopar guys :devil:

How about 3000 HP TT 704 CID ($57,000)

http://www.nelsonracingengines.com/motors.html

What do you think?

If it was for strreet use at what speed will you get traction?

"If the CI is to big the turbo will not be able to create boost without major lag...."

Huh??? :confused:

Not sure where you came up with that?

How about 1710 CID and turbocharging??
http://www.bcam.net/engines/allison.htm

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its simple. the larger the hole to fill the longer it takes to fill that hole (or 8 holes in this case) and i am not saying you cant make big horse power but making big HP and making it WORK in a car with a transmission/converter that is a different story.

and as for that link.. 1710 ci only making 1475.. thats just straight SAD. Guys now adays make that with under 350 ci. but for the day that was good

How about 3000 HP TT 704 CID ($57,000)

http://www.nelsonracingengines.com/motors.html

What do you think?

If it was for strreet use at what speed will you get traction?

About 90 mph!! :jest:
RIGHT BEFORE YOU TAKE OFF!!!

its simple. the larger the hole to fill the longer it takes to fill that hole (or 8 holes in this case) and i am not saying you cant make big horse power but making big HP and making it WORK in a car with a transmission/converter that is a different story.

and as for that link.. 1710 ci only making 1475.. thats just straight SAD. Guys now adays make that with under 350 ci. but for the day that was good

Did you forget that the bigger hole has a bigger exhaust too?

and as for that link.. 1710 ci only making 1475.. thats just straight SAD. Guys now adays make that with under 350 ci. but for the day that was good

Remember, these guys had to go fight with that motor and get back home. Pulling over was not exactly an option. At least not a very good one. The Germans saw to that.

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Did you forget that the bigger hole has a bigger exhaust too?



Remember, these guys had to go fight with that motor and get back home. Pulling over was not exactly an option. At least not a very good one. The Germans saw to that.

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Nope I did not, it has a bigger intake also and your point? still MORE volume to fill and the same turbo's on the market that can only fill so much volume so fast and the more volume to fill, the SLOWER it fills it.

Maybe you should go back to the video link above (http://www.nelsonracingengines.com/motors.html) and look at that 406ci motor they did for the editor of HOTROD that made 1100 hp on pump gas. They have to drive the car 300 miles - race it - then drive 300 miles again.

I seen a turbo BBC in a 2nd gen Firebird. That was one wicked car. No lag as the thing just launched, low low 9's and it was the first time out.

Nope I did not, it has a bigger intake also and your point? still MORE volume to fill and the same turbo's on the market that can only fill so much volume so fast and the more volume to fill, the SLOWER it fills it.

Maybe you should go back to the video link above (http://www.nelsonracingengines.com/motors.html) and look at that 406ci motor they did for the editor of HOTROD that made 1100 hp on pump gas. They have to drive the car 300 miles - race it - then drive 300 miles again.

Okay, pop quiz.

Which engine would be better to turbo and why?

http://www.pbase.com/donbe/image/60842343.jpg

the one to the right because it's assembled. you can't turbo a motor with no heads or intake.

haha damn i was gonna say that :jest:

I too have been kicking around the idea of making my old school chevelle turbo. After alot of work on my buddies gto, I think small block would be easier. Via smaller turbos which equals smaller piping, which is way easier to run out the car. Can you make the same power either BB or SB, yes, but a BB would be easier only because you can make more power NA, which equals less power for the turbo to need to add to reach a desired goal. Now weigh the cost to build a BB and SB, almost half the price. SB looks pretty tempting. Add the cost of smaller turbos, smaller I/C, and fuel system, total cost could be almost 25-50% less. Also a SB gives you more room to change plugs. The only problem I still have is, after looking at a BB under the hood for so long, an SB looks like a Briggs and Straton. Just my .02.

Okay, pop quiz.

Which engine would be better to turbo and why?

http://www.pbase.com/donbe/image/60842343.jpg


Okay, it was a trick question. All three engines are about 400 CID. The one on the left is the 325hp 396 our of my '67 RS SS396 Camaro. It's a 396 + .040 The one in the center is a +.020 400. The one on the right is a stock bore '70 L78 from a Camaro that 's really a 402.

The point is that they all displace really close to 400 CID and will pump the same amount of air. It really does'nt matter if it's a big block or small block, forced induction will work about the same.

none of them buy an ls1

Okay, pop quiz.

Which engine would be better to turbo and why?

http://www.pbase.com/donbe/image/60842343.jpg

I was going to say the one in the left ... why is after why not the others ....

middle: small block good before I knew it`s a 400 block
thin walls and heating issues

right: bbc but you`ll change heads for better ones and intake seems a small dual plane (single rocks for forced induction)

now why left : bbc thick walls choose a canfield aluminum 320 or 360 cc intake heads (check for readyly available parts compatability or needing custom parts)or an iron Merlin 320 or 345 cc intake heads both with a single plane intake manifold from x-celerator to a victor 170 $ and 248 $ and it`s gooood

just an opinion.

and as for that link.. 1710 ci only making 1475.. thats just straight SAD. Guys now adays make that with under 350 ci. but for the day that was good

Umm...They might make that much HP...But NOT at 3000 RPM...That much HP at that RPM = A shit load of torque...