Not a huge selection out here but, whats the pros/cons of each?

58MM with N20 Passages

58MM VS 52MM On a FI 383?

Would there be a significant difference running a 52MM versus a 58MM with a ported intake?

How hard is it to home port-match the 58MM to the intake manifold without much other than a dremel?

Anyone ever successfuly do a monoblade conversion? What all would be involved in that?

I plan to make a supercharged low compression 383, and I think it would be worthwhile for me to go to twin 58, versus 52 since its oging to be a FI motor when im done with it. I dont really know if their enough to bottleneck it or not though?

Any other questions/comments?

Throttle bodies havent been discussed in here for quite some time now.

 

Most say that a stock TB will work for any application, and some swear that bigger is better. I went with a Holley 52mm for my H/C 355.

 

Since im going to build a 383 Forced Induction motor, either procharged, or some type of turbo, or twin turbo, set up, I figure I cant go too big for the #'s I want to make

So really all I was looking at was 58MM, and seeing if anyone ever converted to a mono-blade stlye like an LS1 has. I was wondering how extensive that could be ($$$) because it didnt really seem like it would be worth it? Hard topic to find anything on too.

 

AS&M makes a monoblade for the lt1.

brook

 

Interesting ... Thanks.

Any idea what all would be involved in getting one of them to fit ( What would need ported. Could it be done at home like a 58MM can? )

 

I just looked on their site, all they have is twin 54MM and 58MM, no monoblade on their site?

 

That's wierd. Thunder Racing shows them:

http://www.thunderracing.com/catalog...vid=4&pcid=180

 

58 will be fine if you match the intake to it.

monoblade will be over kill, specially on a supercharged car, the airs going to get forced in either way lol

 

I think that's because there isn't much information out there to be had. Perhaps I have overlooked it, but I have never seen a back to back comparison between a stock TB and a 52/58mm. Once I get my car running right I plan to do a back to back dyno comparison if I can find a 52mm TB to borrow for a few hours. I would like to compare a 58mm also, but my intake is not matched to accept that size.

 

we did that on a buddy of mines car.
he had normal bolts on with the 305 cam.
he gained 8-10 hp going from stock to the 58
it wasnt just peak hp, it was from 2k to 6k

 

Stock heads?

 

yep stock heads