single turbo +carb+big cubes=??

That would work

jones wrote:I'm still trying to find a efi setup as cheap as a blow thru carb. $1,300 carb $300 bonnet?

Megasquirt III $699,

jones wrote:I'm still trying to find a efi setup as cheap as a blow thru carb. $1,300 carb $300 bonnet?

Megasquirt III $699,

Boost and fuel injection just go together. If you can afford an 8 second car you can afford fuel injection.

Be done with it and get yourself a fuel injection setup.

You could run a big single with this setup. Like someone said, a 106, 114, 118, 122 can all do the job. It won't take much boost to make the HP you are looking for. And it could be tuned to run on pump gas. Just keep the boost low. Thing is, that motor will make boost very easy. Twins are always better because they can handle more flow, but a single will work.

Don't know much about carbs. Can't help you there.

big stuff 3 all the way

big stuff 3 all the way

Wow! It's been awhile since I've been on here. Thanks for the advise guys! I'm looking at switching heads to.
For awhile I dropped the turbo idea and I was gonna look into a 12/71 or 14/71 on alky. But now I'm back to thinking about turbos again. I have to stop changing my mind!

I like turbos for a couple of reasons. They are quite compared to a blower, and you don't have to have a huge chunk sticking out of the hood.





And of course, make huge power, but the blowers can too.

whatbumper wrote:I like turbos for a couple of reasons. They are quite compared to a blower, and you don't have to have a huge chunk sticking out of the hood.





And of course, make huge power, but the blowers can too.

the huge chunk looks badass, but I agree turbos are more efficient.

Ok how bout this. What cubic inch big block with fuel injection would be optimum with a single turbo and what size turbo to get a 3500# car in the mid to high 7's if at all possible?

Anything smaller than about a 540 and a 101 to 106 turbo would be fine.

I would do something in the 500 range with a 106 if I was building it for a customer and that was their initial goal with either a FAST XFI or Holley dominator efi system.

I have been playing with the SDS efi (Simple Digital Systems) on my '86 Turbo 2.3.
Seems to work fine.

So I bought another 2.3 system for $ 400 delivered and another $ 135.00 for a "V-8 chip"
I am going to try to efi my 460 for less than $ 700 with some used "big" injectors. (and a huge throttle body)

You can run a blow through carb--The carb technology for blow through has advanced a lot the last 10 years and the last 5 years even more; Blow through is finally catching on. Yah, it's not EFI, but it works just fine. Just look at the engines Steve Morris is doing with blow through carb stuff.

I had a blow through setup on a pro charger in a boat and it was flawless, made 850 on pump gas.

gordyd4 wrote:You can run a blow through carb--The carb technology for blow through has advanced a lot the last 10 years and the last 5 years even more; Blow through is finally catching on. Yah, it's not EFI, but it works just fine. Just look at the engines Steve Morris is doing with blow through carb stuff.

I had a blow through setup on a pro charger in a boat and it was flawless, made 850 on pump gas.

I agree that carbs can make the power, been making over 2000hp with a blowthru procharger setup on a customers car. the question was something really user friendly and easy to tune, efi all the way. the efi is just easier to tune and the window is bigger than the carb. if you are really good with a carb then it is the way to go. all I know was the carb setup with hat that we ran was over $2800. is that cheaper yes initially, yes. I have no problem running carbs but for most not being able to let the computer adjust things for you is a big turn off.


btw, we sold the carb stuff off the above combinations to purchase most of the efi system that is going back on it.

what heads are you guys using that will easily support 2000hp with a turbo/s?

jason wrote:what heads are you guys using that will easily support 2000hp with a turbo/s?

I believe you'll most commonly see A and C heads with 18 head bolts for this type of setup. I'm sure people have done it with 10 head bolts, though.

Have a good day!
Michael

So a Thor gen2 isn't needed?? What if I wanted to try and make more than 2000?

jason wrote:So a Thor gen2 isn't needed?? What if I wanted to try and make more than 2000?

A solid A headed engine could make as much power as you want with boost.

I have a friend that has a blow thru deal on his sbf. He has gone through several short blocks before he finally got it dialed in which people don't seem to think will happen. He put it on a dyno last month and picked up 70 hspr in jetting  but with a carb that is only good till the weather changes. I agree with one of the other posts... if you are building a 7 second 2000 hspr car then efi is not expensive. If you can't even afford that then you are living a pipe dream any ways.

As far as efi it is more expensive than it looks as well. Manifold conversion, fuel rails, injectors, with Holley it seems like you keep having to buy something else. Of course in the end you will have a very universal system that you can use with any blower, turbo street car, whatever. To me it is an investment that I hope will pay off in the long run. Btw, I am currently converting my 460 to efi with the Holley HP unit.

BTW, below is a link to Earl Schexmayders car. He was on Street Outlaws when they were in New Orleans. This is a bad ass twin turbo 600 inch Kaase headed car. He is running a BS 3 but I do not know any other specs. Traction seems to be the biggest problem now. lol.

https://www.youtube.com/watch?v=MO_zvv5vjAY

jasonf wrote:I have a friend that has a blow thru deal on his sbf. He has gone through several short blocks before he finally got it dialed in which people don't seem to think will happen. He put it on a dyno last month and picked up 70 hspr in jetting  but with a carb that is only good till the weather changes. I agree with one of the other posts... if you are building a 7 second 2000 hspr car then efi is not expensive. If you can't even afford that then you are living a pipe dream any ways.

As far as efi it is more expensive than it looks as well. Manifold conversion, fuel rails, injectors, with Holley it seems like you keep having to buy something else. Of course in the end you will have a very universal system that you can use with any blower, turbo street car, whatever. To me it is an investment that I hope will pay off in the long run. Btw, I am currently converting my 460 to efi with the Holley HP unit.

BTW, below is a link to Earl Schexmayders car. He was on Street Outlaws when they were in New Orleans. This is a bad ass twin turbo 600 inch Kaase headed car. He is running a BS 3 but I do not know any other specs. Traction seems to be the biggest problem now. lol.

https://www.youtube.com/watch?v=MO_zvv5vjAY

Holley is one of the cheaper systems to use. We love them. We use the holley dominator box and do away with the MSD stuff and use coil packs. We do conversions often and for most people it is easier and better for the most part to go EFI over carb just for tune ability.

So the Holley dominator will control fuel and timing?

jason wrote:So the Holley dominator will control fuel and timing?

Yep, and boost control and shifter and a bunch of timers and data logging

Consider a Procharger. They have some full race models that make insane amounts of boost. Then you don't have to do all the fab work on the exhaust. Never ran one personally, but I wish I could.

whatbumper wrote:

jason wrote:So what would be a good set up with twins to get what I'm looking for and not have a ton of gremlins ?

what is your car certified to?
How fast do you want to go?

Big horsepower is possible with turbos.  Why stick with blow through? Everyone thinks blow through is cheaper.  By the time you set up your fuel system and carb and everything else it is about the same and the tuning ability is much greater with efi allowing you multiple tunes for differing tracks and conditions.

Yeah, I agree, some of the big carbs setup for blow thru are not cheap.

I am designing  a blow thru for my 513 BBF T-Bird using a unmodified Torker II intake ( for hood clearance reasons) and a 90 deg. elbow to bolt to that 4150 flange intake and the elbow will house all 8 injectors.
.
I bought a complete efi system for 400
The elbow is 500
Then I need 8 of the 90 lb. injectors
And the last thing I need is the 90 mm throttle body

I can change the tune from inside the car without the use of a computer.