Turbo for a BBC
09-29-2007, 08:21 AM
#21
Depends on who does your carb. A FAST XFI setup is roughtly $3k or so depending on options. Then you add injectors and all the sensors. It get expensive. Been there done that.
A full tilt Blow Thru Carb from CSU goes for roughly $1400 and is built to your engine and power adder combo. It is easily able to be dialed in for specifi A/F ratios and boost enrichment.
Its two diffrent ball games each with its advantages.
A full tilt Blow Thru Carb from CSU goes for roughly $1400 and is built to your engine and power adder combo. It is easily able to be dialed in for specifi A/F ratios and boost enrichment.
Its two diffrent ball games each with its advantages.
09-30-2007, 05:25 PM
#22
Originally Posted by Josh @ KYTP
Depends on who does your carb. A FAST XFI setup is roughtly $3k or so depending on options. Then you add injectors and all the sensors. It get expensive. Been there done that.
A full tilt Blow Thru Carb from CSU goes for roughly $1400 and is built to your engine and power adder combo. It is easily able to be dialed in for specifi A/F ratios and boost enrichment.
Its two diffrent ball games each with its advantages.
A full tilt Blow Thru Carb from CSU goes for roughly $1400 and is built to your engine and power adder combo. It is easily able to be dialed in for specifi A/F ratios and boost enrichment.
Its two diffrent ball games each with its advantages.
How finley can you tune/dial in your motor on one od those carbs compared to an XFI or something?
10-01-2007, 08:29 AM
#23
Originally Posted by JUICED96Z
How finley can you tune/dial in your motor on one od those carbs compared to an XFI or something?
Went to the track Friday night and my AFR varied less than a point from start to finish. They're very tuneable.
Don't forget you can't run as much boost non-intercooled with EFI than you can with a carb. So on top of that EFI setup you need to add the cost of an intercooler. There are guys running 25+psi nonintercooled with a carb and C16 fuel. No way can you do that with EFI.
Craig
10-01-2007, 12:24 PM
#24
On The Tree
Thread Starter
Join Date: Apr 2005
Location: Sylvester, ga
Posts: 187
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 1fastWS6
Went to the track Friday night and my AFR varied less than a point from start to finish. They're very tuneable.
Don't forget you can't run as much boost non-intercooled with EFI than you can with a carb. So on top of that EFI setup you need to add the cost of an intercooler. There are guys running 25+psi nonintercooled with a carb and C16 fuel. No way can you do that with EFI.
Craig
Don't forget you can't run as much boost non-intercooled with EFI than you can with a carb. So on top of that EFI setup you need to add the cost of an intercooler. There are guys running 25+psi nonintercooled with a carb and C16 fuel. No way can you do that with EFI.
Craig
10-01-2007, 12:38 PM
#26
Originally Posted by 68LS1WANNABE
How can they get away with not intercooling. It would be much easier to run without. How much hp are they making with 25psi on a big block? Must be crazy amounts.
It has to do with the transistion of the fuel via the carb. The air fuel atomization in the intake cools the air much like Meth. Where as the boosted air pressure inters the port and the injector is spraying the fuel. That is the lamens explanation with out getting real technical.
I have seen guys run 18lbs not intercooled on Blow Thru carb setups on the street during the dead heat of summer with no problems.
10-01-2007, 01:04 PM
#27
Staging Lane
Join Date: May 2005
Location: omaha ne
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Josh @ KYTP
It has to do with the transistion of the fuel via the carb. The air fuel atomization in the intake cools the air much like Meth. Where as the boosted air pressure inters the port and the injector is spraying the fuel. That is the lamens explanation with out getting real technical.
I have seen guys run 18lbs not intercooled on Blow Thru carb setups on the street during the dead heat of summer with no problems.
I have seen guys run 18lbs not intercooled on Blow Thru carb setups on the street during the dead heat of summer with no problems.
10-01-2007, 07:14 PM
#28
On The Tree
Thread Starter
Join Date: Apr 2005
Location: Sylvester, ga
Posts: 187
Likes: 0
Received 0 Likes
on
0 Posts
I've been thinking about this power goal for a few days now and have come to a conclusion. I have no certain power goal. More is always better. That said, I want an engine combo built for the turbo. Street car with 335/17's, 4l80 trans, 9" w/ 3.55 probably. I'm gonna call comp cams and get them to spec a turbo cam. Would it be too unrealistic to shoot for 18+ mpg with the overdrive. Basically I want a good sounding, docile motor that will become a beast on the boost. Also needs to pull enough vacuum to run acc. I've never owned a turbo car but rode in one and now I have the bug. I also don't have 10's of thousands to put into a motor. It will be built on the best parts and ingenuity that I can afford. Many people tell me that it can't be done but I've seen lots of people on this forum who build with their heads instead of their wallet.
10-01-2007, 08:22 PM
#29
A basic setup to think of:
-Factory 454 Block bored .060 and machined
-Eagle 4.250 4340 Forged Steel Crankshaft
-Eagle 6.385 3-D 4340 Steel H Beam Connecting Rods
-8.6:1 Mahle High Performance Forged Aluminum Race Pistons
-Plasma Moly Performance Piston Ring Set
-Clevite 77 High Performance rod and main bearing set
-ProComp 320cc aluminum heads
-Decent BBC intake
-Nice Blow through Carb
-Nice solid Turbo setup with a 91mm
Comes out to a solid aluminum head 498ci BBC for well under $8000.
The engine could be built using a nice set of GM cast iron heads for $700 or so cheaper.
Point being that with a nice BBC you dont need huge boost to make more power than you will ever want on the street.
The combo above is running around on the street local here with 10lbs making well over 900rwhp. This is non-intercooled. It is in an early Nova. It is currently getting a large FMIC and Meth setup so that it can get turned up to 17lbs. The guy that owns the car built his own Carb using the instruction on TurboMustangs. He swears he has less than $10,000 in his entire engine and turbo setup.
-Factory 454 Block bored .060 and machined
-Eagle 4.250 4340 Forged Steel Crankshaft
-Eagle 6.385 3-D 4340 Steel H Beam Connecting Rods
-8.6:1 Mahle High Performance Forged Aluminum Race Pistons
-Plasma Moly Performance Piston Ring Set
-Clevite 77 High Performance rod and main bearing set
-ProComp 320cc aluminum heads
-Decent BBC intake
-Nice Blow through Carb
-Nice solid Turbo setup with a 91mm
Comes out to a solid aluminum head 498ci BBC for well under $8000.
The engine could be built using a nice set of GM cast iron heads for $700 or so cheaper.
Point being that with a nice BBC you dont need huge boost to make more power than you will ever want on the street.
The combo above is running around on the street local here with 10lbs making well over 900rwhp. This is non-intercooled. It is in an early Nova. It is currently getting a large FMIC and Meth setup so that it can get turned up to 17lbs. The guy that owns the car built his own Carb using the instruction on TurboMustangs. He swears he has less than $10,000 in his entire engine and turbo setup.
10-01-2007, 09:13 PM
#30
On The Tree
Thread Starter
Join Date: Apr 2005
Location: Sylvester, ga
Posts: 187
Likes: 0
Received 0 Likes
on
0 Posts
That sounds real good josh. you are right about the "more hp than you need". It's hard enough to hook a na bbc on the street. They have to be tuned down cause of all the torque. however it is pretty cool to be able to smoke the tires while running 60 mph.
10-01-2007, 10:09 PM
#31
Its pretty much the basic combo I am building to shoe horn into a 4th gen F-Body Z28. Its been a big secret so far, but the cats outta the bag. I have a 410ci BBC nitrous engine with a Fogger for it right now while I am building the 498ci BBC.
10-04-2007, 07:04 AM
#32
On The Tree
Thread Starter
Join Date: Apr 2005
Location: Sylvester, ga
Posts: 187
Likes: 0
Received 0 Likes
on
0 Posts
what mileage do you see that motor getting with a overdrive trans and decent gear?
10-04-2007, 07:17 AM
#33
BBC's are gas drinkers no matter what lol.
My 468 with a BG 850 that flows over 1,000 gets like 7mpg mostly cruising around. Thats also with a TH-400, forged steel driveshaft and 12 bolt. At 60mph with a 28 inch tall tire its at like 2800 RPM.
I know a few guys that just about figure it in gallons to the mile not miles to the gallon on the cars.
My 468 with a BG 850 that flows over 1,000 gets like 7mpg mostly cruising around. Thats also with a TH-400, forged steel driveshaft and 12 bolt. At 60mph with a 28 inch tall tire its at like 2800 RPM.
I know a few guys that just about figure it in gallons to the mile not miles to the gallon on the cars.
10-04-2007, 08:34 AM
#34
Well the BBC in the 4th gen is not gonna happen I am sticking with eventually putting it in my 72 Split Bumper Camaro. I will probably change my mind 10 more times by then.
As far as mileage is concerned with a BBC, I dont even think about it. I figure economy is a price you pay to have 1000rwhp and earth moving torque.
As far as mileage is concerned with a BBC, I dont even think about it. I figure economy is a price you pay to have 1000rwhp and earth moving torque.
10-04-2007, 07:27 PM
#36
Banned
Join Date: Mar 2007
Posts: 257
Likes: 0
Received 0 Likes
on
0 Posts
A basic setup to think of:
-Factory 454 Block bored .060 and machined
-Eagle 4.250 4340 Forged Steel Crankshaft
-Eagle 6.385 3-D 4340 Steel H Beam Connecting Rods
-8.6:1 Mahle High Performance Forged Aluminum Race Pistons
-Plasma Moly Performance Piston Ring Set
-Clevite 77 High Performance rod and main bearing set
-ProComp 320cc aluminum heads
-Decent BBC intake
-Nice Blow through Carb
-Nice solid Turbo setup with a 91mm
Comes out to a solid aluminum head 498ci BBC for well under $8000.
The engine could be built using a nice set of GM cast iron heads for $700 or so cheaper.
Point being that with a nice BBC you dont need huge boost to make more power than you will ever want on the street.
The combo above is running around on the street local here with 10lbs making well over 900rwhp. This is non-intercooled. It is in an early Nova. It is currently getting a large FMIC and Meth setup so that it can get turned up to 17lbs. The guy that owns the car built his own Carb using the instruction on TurboMustangs. He swears he has less than $10,000 in his entire engine and turbo setup.
-Factory 454 Block bored .060 and machined
-Eagle 4.250 4340 Forged Steel Crankshaft
-Eagle 6.385 3-D 4340 Steel H Beam Connecting Rods
-8.6:1 Mahle High Performance Forged Aluminum Race Pistons
-Plasma Moly Performance Piston Ring Set
-Clevite 77 High Performance rod and main bearing set
-ProComp 320cc aluminum heads
-Decent BBC intake
-Nice Blow through Carb
-Nice solid Turbo setup with a 91mm
Comes out to a solid aluminum head 498ci BBC for well under $8000.
The engine could be built using a nice set of GM cast iron heads for $700 or so cheaper.
Point being that with a nice BBC you dont need huge boost to make more power than you will ever want on the street.
The combo above is running around on the street local here with 10lbs making well over 900rwhp. This is non-intercooled. It is in an early Nova. It is currently getting a large FMIC and Meth setup so that it can get turned up to 17lbs. The guy that owns the car built his own Carb using the instruction on TurboMustangs. He swears he has less than $10,000 in his entire engine and turbo setup.
hmmm we need to talk lol..... Do you guys do bbc set ups? Im very interested in a combo just like the one you are talking about above.... Let me know.... Just give me a pm when you get a chance? thanks
10-05-2007, 08:55 AM
#37
Josh.....a .060" over (4.310" bore) motor your talking about will be 496". A 498 (atleast in my case) is .070" over.
The carb provides almost if not as much charge cooling as an air to air intercooler. I know several BBC combinations in the 496"-555" range, non-intercooled, that make anywhere from 1000hp to 1500hp. Mine makes somewhere between 1100 and 1200 on 16psi, non-intercooled, depending on the tuneup.
Craig
The carb provides almost if not as much charge cooling as an air to air intercooler. I know several BBC combinations in the 496"-555" range, non-intercooled, that make anywhere from 1000hp to 1500hp. Mine makes somewhere between 1100 and 1200 on 16psi, non-intercooled, depending on the tuneup.
Craig
