351 Performer RPM intake

Muststang

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#1

• Oct 7, 2010

• #1

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.

 

B

bayellowstang

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#2

• Oct 7, 2010

• #2

Edelbrock.com - Manifolds - Ford - Performer - 5.8L

look for 5.8 instead of 351.

 

Venom351R

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#3

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What I have on mine.

Edelbrock 3887 - Edelbrock Victor Ford 5.8L EFI Intake Manifolds - Overview - SummitRacing.com

 

Muststang

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#4

• Oct 7, 2010

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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.

 

Venom351R

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#5

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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.

 

Muststang

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#6

• Oct 9, 2010

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This is the intake I'm talking about. It's on a 1,000+ hp 351.

 

Venom351R

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#7

• Oct 9, 2010

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Thats not a victor 5.8 and thats what is made for the 351. The RPM and RPM II are 302 intakes.

 

1slow95

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#8

• Oct 9, 2010

• #8

Muststang said:

This is the intake I'm talking about. It's on a 1,000+ hp 351.

Click to expand...

I'm not good at judging engines from pics, but that looks like a 302 block, not a 351. I know the RPM II is not available for the 351 because that was my original choice for an intake.

 

Muststang

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#9

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That's odd. The article said it's a 363 windsor. Or maybe it's really a 302 with a 363 stroker kit? Here's the article.

1991 Ford Mustang Coupe - Muscle Mustangs & Fast Fords

"He built a 363ci Windsor using a Dart block, CP pistons, and Prime 1 rods and crankshaft."

 

Venom351R

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#10

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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.

 

revhead347

Apparently my ex-husband made that mistake.

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#11

• Oct 10, 2010

• #11

Muststang said:

That's odd. The article said it's a 363 windsor. Or maybe it's really a 302 with a 363 stroker kit? Here's the article.

Click to expand...

That's an 8.2" (stock 302 deck height) Dart block.

Kurt

 

revhead347

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#12

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Venom351R said:

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.

Click to expand...

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

 

Venom351R

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#13

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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?

 

revhead347

Apparently my ex-husband made that mistake.

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#14

• Oct 10, 2010

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Venom351R said:

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?

Click to expand...

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

 

Venom351R

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#15

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Yeah thats what I was thinking b/c I always thought the limit of the 302 factory block was 347 cubes

 

Rick 91GT

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#16

• Oct 12, 2010

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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...

 

revhead347

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#17

• Oct 12, 2010

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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

 

Rick 91GT

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#18

• Oct 13, 2010

• #18

revhead347 said:

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

Click to expand...

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 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....