351 Performer RPM intake

Muststang

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Jul 18, 2010
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I've been trying to hunt track down the performer RPM II intake for the 351. It looks identical to the one used on the 302 and every time I search for it I always end up with those carb intakes or 302 intakes. Does Edelbrock still make it? So far all I have to go by is an article in a magazine of a calypso green fox body making over 1,000hp with a turbocharged 351 stroker using this intake.
 
Thanks for the replies. The performer series are their milder stuff plus that's a truck manifold. The one I'm looking for looks identical to the Performer 5.0 RPM II manifold and even uses the same upper plenum except the bottom is for the 351. It's street legal unlike the Victor and has provisions for egr.
 
Thats the one I posted. Only difference is the lower. The upper of the Victor and the RPM's are the same.

Its not listed for a Mustang b/c there is no Mustang that came with a 351 other then the 95R. Summit only lists parts that it was actually made for. I have that exact same manifold on mine as well as many other people.

FYI there is no provision for a PCV so you have to have proper ventilation.
 
This is the intake I'm talking about. It's on a 1,000+ hp 351.




mmfp_1008_06_o+1991_ford_mustang_coupe+engine.webp
 
I remember reading about that car before when it was in the magazine a few months ago. All I can tell you for sure is that the Victor 5.8 is the only Edelbrock intake that is designed for a 351 that will fit on a Mustang. Its not listed under the applications b/c the 351 engines that ford produced were truck engines at the time other then the 95 Cobra R and its such a limited run that summit does not list it on their site but it does not mean it wont work in a mustang application b/c Truck blocks, Van blocks, VS Mustang blocks are the same. Most of the 351 engines you see being used here came from a truck or a van. Other then the 95 R there are no factory ford 351 blocks.

Edelbrock 7123 - Edelbrock Performer 5.0 RPM II Intake Manifolds - Application - SummitRacing.com


That is the RPM II it is listed for 302 applications on summit, who knows maybe it can be used in a 363 application but I dont know for sure. The most you can stroke a 302 block to is 347 cubes. Anything above that its smart to move to a 351 based engine. Maybe its a 351 lower with an RPM II Upper who knows.
 
The most you can stroke a 302 block to is 347 cubes. Anything above that its smart to move to a 351 based engine. Maybe its a 351 lower with an RPM II Upper who knows.

The most you can reasonably go on a stock block is 347, because the max bore is 4.030". The Dart and Man O' War blocks can be bored out to 4.125" which is how they get them up to 363cid. The Boss 302 block can be taken up to 374cid with a stock 8.2" deck height, because you can go to a 4.125" bore and a 3.500" stroke.

Kurt
 
ahh makes sense. But thats just the dart block correct? If you take a standard 302 block and try to stroke it to 363 it wouldnt work out to well would it?

No, I'm pretty sure if you tried to bore a stock block out that far you'd be into the water jackets. The stronger aftermarket blocks have much thicker cylinder walls. The Dart, Man O' War, and the Boss block can be bored to 4.125".

Kurt
 
Ive taken stock blocks to 4.08" but then we usually half fill them with hardblock to give the cylinders some strength... about .060" over bore which will make a 3.4" stroke motor a 352" is about all you can go...
 
Yeah, everyone has told me the realistic bore limit on a 302 is .030" over. Anything over that and it becomes a strength issue. Rick, have you ever done a half fill engine for a street car? Ever have any cooling issues with it?

Kurt
 
Yeah, everyone has told me the realistic bore limit on a 302 is .030" over. Anything over that and it becomes a strength issue. Rick, have you ever done a half fill engine for a street car? Ever have any cooling issues with it?

Kurt

Yeah did a 310ci combo, 430-450HP that ran on the street with no issues, half fill, electric water pump, Double pass radiator..... Now it wasn't a daily driver, but saw a lot of weekends and cruises and some street racing:D Usually fill close till the bottom of the water pump ports on the front of the block...

I won't say it's ideal but does work, real popular with the 350 Chevy....