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-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   BBC Intake question (https://www.offshoreonly.com/forums/general-q/121952-bbc-intake-question.html)

TC 02-06-2006 03:03 PM
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.

blue thunder 02-07-2006 04:45 PM
Re: BBC Intake question
 
Originally Posted by 98itrwhite
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
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:

CanDo 02-08-2006 07:44 AM
Re: BBC Intake question
 
Edelbrock Victor jr. is what i used too. Worked well. CanDo

dean51267 02-08-2006 07:56 AM
Re: BBC Intake question
 
Originally Posted by 98itrwhite
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

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...

98itrwhite 02-08-2006 10:34 AM
Re: BBC Intake question
 
Originally Posted by blue thunder
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:
did you have to cut 2 or 4 sides of the manifold?

98itrwhite 02-08-2006 10:37 AM
Re: BBC Intake question
 
sorry, just read it again ''the runner surface''


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