idle to 5500 or 1500 to 6500 intake?

[Romaniac]

I have a stock drivetrain stock rear end 1980 monte carlo a weekend away from getting its 350sbc 4 bolt main which put out 400hp. It has a racing intake so Im looking to get something street friendly. either the

Edelbrock Performer air gap (idle to 5500)
or
Edelbrock RPM air gap (1500 to 6500)



I dont know the stall, nor tourque converter. All I know is that Theyre both stock, and I will be getting a posi in the near future.

All advice appreciated!

 

[565bbchevy]

If the 350 you are getting is a real 400 hp engine then I would go with the Performer RPM Air Gap but you will still need a higher stall convertor and a gear to make use of the power, which is why you want the 350 in there anyways and don't underestimate the driveability of a good single plane intake.
The performer is only for stock to mild builds it would limit performance on a built engine.

 

[Romaniac]

If the 350 you are getting is a real 400 hp engine then I would go with the Performer RPM Air Gap but you will still need a higher stall convertor and a gear to make use of the power, which is why you want the 350 in there anyways and don't underestimate the driveability of a good single plane intake.
The performer is only for stock to mild builds it would limit performance on a built engine.

I will get a higher stall converter, when I figure out how to do it/where to get it done.

The engine puts out true 400 with a double pump 650 and a racing intake. I am willing to tune it down a little for street use and get a q jet carb or a vaccum secondary 600. Thanks for the input!

 

[Romaniac]

If the 350 you are getting is a real 400 hp engine then I would go with the Performer RPM Air Gap but you will still need a higher stall convertor and a gear to make use of the power, which is why you want the 350 in there anyways and don't underestimate the driveability of a good single plane intake.
The performer is only for stock to mild builds it would limit performance on a built engine.

and by "gear" Do you mean the ratio in a posi? Thanks.

 

[Romaniac]

this is what im looking at so far http://www.summitracing.com/parts/edl-7501

 

[-83MONTESS-]

If the 350 you are getting is a real 400 hp engine then I would go with the Performer RPM Air Gap but you will still need a higher stall convertor and a gear to make use of the power, which is why you want the 350 in there anyways and don't underestimate the driveability of a good single plane intake.
The performer is only for stock to mild builds it would limit performance on a built engine.

and by "gear" Do you mean the ratio in a posi? Thanks.

Yes the gear ratio in the rear end. If you have the stock torque convertor and stock rear end you're wasting time with that engine swap right now. Get the appropriate torque convertor and the required gears to get the most from that engine. And if it is 400 true hp then dont bother trying to find a stock 7.5 either. Save yourself a tow bill and find an GM 8.5, 12 bolt, or like me and build a furd 9 inch. You really cant go wrong with that Edelbrock Performer Air Gap on any street engine.

 

[Romaniac]

If the 350 you are getting is a real 400 hp engine then I would go with the Performer RPM Air Gap but you will still need a higher stall convertor and a gear to make use of the power, which is why you want the 350 in there anyways and don't underestimate the driveability of a good single plane intake.
The performer is only for stock to mild builds it would limit performance on a built engine.

and by "gear" Do you mean the ratio in a posi? Thanks.

Yes the gear ratio in the rear end. If you have the stock torque convertor and stock rear end you're wasting time with that engine swap right now. Get the appropriate torque convertor and the required gears to get the most from that engine. And if it is 400 true hp then dont bother trying to find a stock 7.5 either. Save yourself a tow bill and find an GM 8.5, 12 bolt, or like me and build a furd 9 inch. You really cant go wrong with that Edelbrock Performer Air Gap on any street engine.

I get what you mean. Im getting a 3.73:1 LSD and a proper lock up torque converter with 2400-2600 stall. Good so far?

And please explain the 7.5/8.5, and what those values stand for 😀

Thanks guys

 

[online170]

Performer RPM is the way to go.

The single plane intake will do just fine on the street too, but you will pick up more HP across the entire band with the dual plane. Ofcourse the single plane outrun the dual plane on high RPM, which is why it gets the bigger HP number.


As far as manners are concerned, you wont notice too much of a difference with one or the other. My assumption is your "Racing Intake" is a single plane like a Victor Jr or something. A tunnel ram is not street friendly.

 

[woody31]

If the 350 you are getting is a real 400 hp engine then I would go with the Performer RPM Air Gap but you will still need a higher stall convertor and a gear to make use of the power, which is why you want the 350 in there anyways and don't underestimate the driveability of a good single plane intake.
The performer is only for stock to mild builds it would limit performance on a built engine.

and by "gear" Do you mean the ratio in a posi? Thanks.

Yes the gear ratio in the rear end. If you have the stock torque convertor and stock rear end you're wasting time with that engine swap right now. Get the appropriate torque convertor and the required gears to get the most from that engine. And if it is 400 true hp then dont bother trying to find a stock 7.5 either. Save yourself a tow bill and find an GM 8.5, 12 bolt, or like me and build a furd 9 inch. You really cant go wrong with that Edelbrock Performer Air Gap on any street engine.

x2 on the rearend a 7.5 inch wont live long behind a 400 hp motor,,i know,,i got 3 broken ones in the back yard and 2 already in the scrap yard,,,they are plentiful and cheap,,but they break,,my motor made 413 on motor and 530 with a 100 shot of n,o,s, with a 870 holley ,,air gap intake and a 2 inch open spacer,,