[BBF612]

The head is more than likely not set up for any more the .600 lift or the flow just drops off at that lift, DK, but if they do flow 350 cfm that's good for 700 hp or so, kind depends on you. But with some of this type of head you better have a good head guy look them over real good as the machining might not be spot on, I would go to Jegs or Summit or any other place that have sold this head and read the reviews if you can't find anyone on here to clue you in.

 

[BBF612]

I would get on this guys channel and check out all his BBC head and intake videos, he has some good do's and don't on porting and valve jobs videos too. I think he also has one video on what to check on china head castings. If you haven't already I think it would be worth your time.

Eric Weingartner

I own Weingartner Racing LLC. I port cylinder heads and intake manifolds for street and race applications. I am based out of Broken Arrow, Oklahoma. On my website www.wengines.com you can see the products mention on my channel. Phone number is 918-520-3480

www.youtube.com

 

[BBF612]

2.3 x .89 = 2.047 throat area = 3.291sqin., this may be helping low lift flow as the velocity will increase going thru the throat from the large port, and that may be why it's that size. And I think any unshrouding of the valve head will help flow.

 

[BBF612]

BBF612, I watch some of Eric's videos and find a lot of contradictory info then what is out there, like the SBc Vic Jr seems to be the best usually from him, yet the other porters put it around 5 or 6th place. He also he seems to really play-up the ProMaxx heads, that he even said they used his services for the Project X Sbc heads, and down plays the Flotek heads. Yet on my personal Flotek BBc 290's and SBc 220, our info was quite different than what he advertises and says.

I bought my 290's and the seller actually took $$$ off and through in a free valve job to keep me from going with Eric due to issues he has had and heard. BUT that was like 5 years ago, so maybe he has changed?

This is an old thread, but you can provide all the information you can to help the OP.

 

[BBF612]

You are going to need something over 400 cfm to make 900 hp, maybe up to 450 cfm or so. Your work looks great, nice.