BBC Intake question
 

Is there tall deck intakes and short deck intakes, or are they the same. If they are different can a tall deck fit on a short deck?
Thanks

Re: BBC Intake question
 

They are not the same. It may be possible to have a machine shop cut the tall deck manifold to fit the standard block. It depends on the manifold.

Re: BBC Intake question
 

as the deck on the block gets taller the heads mover farther apart. so a standard intake will no longer fit.

Re: BBC Intake question
 

i am dealing with the same problom rite now. i got a set of merlin heads with a dart intake and now i put the heads on this weekend and now the intake wont clear the heads. my machineist said it would be cheaper and fastes to just buy a new intake. whats the deck height on a stock 454 big block. also what do you guys rec. for a intake. i am spinning no more than 5000rpms. thanks

Re: BBC Intake question
 

Tall deck manifolds will not fit on a short deck. Check around and I think you can find spacers to fit a short deck manifold on a tall deck block.
Gary

Re: BBC Intake question
 

yes, you can but only for the rect. port heads

Re: BBC Intake question
 

9.8 standard, 10.2 tall.

Re: BBC Intake question
 

great, thanks

Re: BBC Intake question
 

98itrwhite, I spoke with you when you were considering building a 496 stroker. What did you end up building? In response to you question about an intake I was told by more than one person that the Edelbrock Victor Jr 454 is hard to beat on a 500ci or less engine. I used this manifold on my 496. The intake needed a bit of "cleaning up" in the ports but overall I feel it was a good choice for my setup. Just my 2 cents...

Re: BBC Intake question
 

i decided to just keep it simple and put my heads on the bottom end pretty much like ''330hp on roids'' thing. i have terrible luck and the more stuff i do to an engine the slower it goes for me its just my luck.

Re: BBC Intake question
 

On my old engine (454 mag) I used an Edelbrock Air Gap. Since the runners are so large on the GM rectangular port heads I was afraid that If I used a single plain intake it would kill my low end. The Air Gap is a dual plane that is claimed to flow to 6500rpm. I used it with an 850 Holley and a 1 inch spacer. This addition really woke my engine up. Good luck with your build and keep me posted on your progress.

Re: BBC Intake question
 

I just bought new dart intakes for 454s with edelbrock heads and discovered the same problem. With my intakes came a cut sheet that said .070" would need to be milled from the runner surfaces in order for these intakes to fit standard bbc heads. I had them cut ($145 for both) and now they are perfect.

BT :cool:

Re: BBC Intake question
 

Edelbrock Victor jr. is what i used too. Worked well. CanDo

Re: BBC Intake question
 

I just purchased a dual plane air gap intake for a pair of 454 mags and Dart heads. We have not put it together but did a lot of research and in the 1500 to 5500 RPM range that seemed to be the best fit.

The air gap seems to cool the air/fuel mixture and picks up a few extra ponies...

Re: BBC Intake question
 

did you have to cut 2 or 4 sides of the manifold?

Re: BBC Intake question
 

sorry, just read it again ''the runner surface''