I know some of you are running these heads and would like to know what kinnda ET gains you had going from a 23* head to the sb2s. Also what were your flow #s. Im in the process of building a 434 sb2.2

 

From a 23º head?

Considering all the things you HAVE to change for this swap makes for one difficult comparison. I will go out on a limb and say that a 500fwhp 383 for instance, using 23º heads might see 15-20hp "swapping" to an 18/15º head and another 15hp and some tq by going to the SB2.2 with all of it's accompanying parts. The SB2.2 could easily be worth 50hp over a good 23º head. Then again, there are some GREAT 23º heads out there but there's alot more going on here than just airflow.

FWIW, the set on my new motor peaked at 447 cfm.

-Mindgame

 

 

FWIW, the set on my new motor peaked at 447 cfm.
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Wow, didnt you just get done building a motor for your car?.

 

Me?

I recently built a 457 ci small block with the sb2.2's on top and a few tricks.

-Mindgame

 

When are we going to get a rundown of that?

447cfm is healthy sounds like a MBE or CFE port.... a buddy of mine is REALLY leary of that MBE stuff.

Bret

 

Yea, sorry I wasnt specific. But when i saw that I was like wow, this man goes through more badazz motors. All I want is one good one.

 

What did that motor make? Seems like I have read it somewhere, but I forget!

 

770 or somthing like that if i recall i seen it somewhere myself.. Mindgame has some nice toy's..

 

All motor I think it was.

 

I would think a 457 with sb2.2s would make alot more than 770 hp

 

Correct me if I'm wrong, but I'm pretty sure MG's SB2.2 is on pump gas.

Ryan

 

Oh course it is, and I'm betting it's a driver too.

 

And when it becomes a "slow race car" he yanks it and builds something faster. I think that about sums it up?.