Diplomat

A while back I saw someone selling a mono blade 1350 cfm throttle body for a LT1 engine? Anyone knows where to get one?

RamAir95TA

AS&M (Arizona Speed and Marine) manufactures one.

Injuneer

If you want the AS&M Monoblade, you better jump on it.... on clearance for $450 "while supplies last". Appears that AS&M, like many other suppliers, is gradually phasing their LT1 parts out.

http://www.azspeed-marine.com/

Diplomat

Do you guys think its worth spending 450 on this...do you think it will make a difference?

RamAir95TA

Are we supposed to guess about what type of motor this is going on?

Injuneer

You've already indicated in another thread.....

https://www.camaroz28.com/forums/sho...d.php?t=736193

..... that you are making 1,034HP with 18# of boost. If you are already making that kind of power, what throttle body are you using? I mentioned a buddy of mine who made 1,125HP on a Vortech S/C'd 383. He use a BBK 58mm TB. The large monoblade, with no center support for the shaft, might have a problem with high boost applications.

Diplomat

I never thought of it that way, I'm still using the stock 52mm. I had it polished and never thought of replacing it.

Yeah 1035hp was made on the engine dyno. I don't like the way the F1 sounds passed 18psi, the annoying whine is unbearable. I can just think how its going to whine in the car. With that said the engine is having issues right now, one of the brand new 96 lbs injectors malfunctioned and seized. Waiting on a new billet set to replace and run another few pulls and hopefully do a tune on it.

Which is why I'm trying to squeeze as much hp as possible before going up to 20#, plus the mono blade just looks bad ***, even though you can't see it.

» 54mm Throttle Body flows 900 CFM
» 58mm flows 1050 CFM
» 58mm Mono-Blade flows 1350 CFM

450CFM more than stock and 300 more than 58mm...I would think with the intake porting to match the mono blade I would see a significant increase. I wish I knew someone that has one!

Diplomat

Its going on a sick Chad Golen setup (383 F-1 ProCharged motor) now were are messing with the intake manifold and fuel system to prepare it for a tune session but running into obstacles with crappy parts, expensive crappy parts LOL!

I would think with 18# of boost going from a 900CFM throttle body to 1350CFM with the Mono blade should be a significant hp increase...if its only a few hp gain that really doesn't justify the price tag of the Mono Blade 1350cfm Throttle Body.

Injuneer

The stock TB has dual 48mm blades.

Numbers like that mean nothing unless they are quoted with a corresponding pressure loss. Those look like the numbers AS&M used for advertising, since they were the only ones that made 54mm TB. Again, 48mm is "stock".

Diplomat

Yeah I found it online...I looked everywhere to try and understand how much bigger this thing is over stock. I was under the impression that stocker unit was a 52mm but either way I need a upgrade so I would assume even the 58mm dual blade would show significant hp increase.

n2ceptor

I thought 58mm was 780 CFM ????

Diplomat

Are you being serious about the dual blade thing? Yeah I know it has dual blade and now I know they are 48mm. This all has nothing to do with the performance of the 58mm mono blade, which is what I'm asking about.

Injuneer

The stock LT1 intake manifold has dual 52mm bores. The stock LT1 throttle body has 48mm blades in a 48mm bore. The bores step to 52mm about 1/4" in front of the manifold flange. Maybe off the subject, but when you provide incorrect information, in the future someone will "search" the thread and not realize the info is incorrect.

I would think the actual dimensions of what you have bolted to the engine right now would be relevent to the performance increase you might see by using an alternative throttle bore... but apparantly you don't care, so I'll mind my own business. Then you won't have to get upset and throw in your angry faces.