Are there any factory turbo's big enough for a V8 ?
02-03-2011, 07:21 AM
#14
0.0 BAR
Thread Starter
Join Date: Feb 2011
Posts: 14
OnebadV6 and I have been PMing. I think it was there, and I accidentally took it out when I edited my posts. Sorry for the confusion. Here's a link to my build thread. To give you an idea of what Im doing. Ive looked a a few turbo's. Off of backhoes, bulldozers, '07 Duramax, ect, too. Some of those I could have gotten free. None that I had access to were big enough. Maybe with twins but I dont want twins really. If any of those are big enough(without modifying them) I would consider twins. Since I can get them free.
https://www.homemadeturbo.com/f42/ne...-build-118321/
https://www.homemadeturbo.com/f42/ne...-build-118321/
Last edited by 91GT347; 02-03-2011 at 07:37 AM.
02-03-2011, 10:01 AM
#17
0.5 BAR
Join Date: Feb 2010
Posts: 57
Ahh 900. ok. Now I have a number to work with...lol.
May I ask why you want to use a carb? Fuel injection is much easier to tune with forced induction...
Also, how high are you planning to rev it and where do you want your peak hp/torque?
GT47 series looks to be a good match. S475 looks like it may start to run out a bit up top...but that depends how high you want to rev it...
May I ask why you want to use a carb? Fuel injection is much easier to tune with forced induction...
Also, how high are you planning to rev it and where do you want your peak hp/torque?
GT47 series looks to be a good match. S475 looks like it may start to run out a bit up top...but that depends how high you want to rev it...
Last edited by MPR; 02-03-2011 at 10:08 AM.
02-03-2011, 10:10 AM
#18
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Join Date: Feb 2011
Posts: 14
Money mainly, and the cars already a carb. I will be doing an EFI swap eventually. Using my carb intake converted over. Ive been told by several people this is probably the best way to go. Since I have no experience with standalone EFI systems. Almost all my cars have been EFI, but in the Mustangs I just ran the stock A9L with no tune, and had a chip burned for the GM stuff. Using the stock ECU. Tuning isnt an issue though.
02-03-2011, 10:23 AM
#19
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Join Date: Feb 2011
Posts: 14
I have people helping me that really know what theyre doing. They run mostly big block Chevy's with blow thru's. In Outlaw drag radial racing. Ofcourse they want me to spend a couple G's on just the turbo itself. Which they can afford, but I cant. lol The 475 or 480 cuts the price down alot. Im just wanting to see if thats as far as Im going to be able to cut it or not. Like most people, I need to save all I can
02-03-2011, 10:31 AM
#20
0.5 BAR
Join Date: Feb 2010
Posts: 57
Yeah, no, was just curious. These days it's unusual to run a carb with a turbo. I don't know if you heard of it but the company "fast" has an EFI auto tuning system that, essentially, tunes itself. We've used a similar feature with megasquirt with a program called tuner studio and the ease of tuning is much beyond what it was even 2 years ago.
If you're worried about not knowing how to tune the EFI, there are solutions out there.
If you want to run carb and you've got people helping you who have done this before and know what they're doing, then by all means.
Good luck with your build. Let us know what turbo you end up using and tells how it works out. How high are you planning on revving this engine? If you keep it under 6500-7000 the s475-480 should work well. It looks like anything above 7000rpm on the s476 and you're getting below 70% efficiency. What's the exact displacement of this engine?
If you're worried about not knowing how to tune the EFI, there are solutions out there.
If you want to run carb and you've got people helping you who have done this before and know what they're doing, then by all means.
Good luck with your build. Let us know what turbo you end up using and tells how it works out. How high are you planning on revving this engine? If you keep it under 6500-7000 the s475-480 should work well. It looks like anything above 7000rpm on the s476 and you're getting below 70% efficiency. What's the exact displacement of this engine?
