I need to get an intake manifold for my 289 for converting from the 2bbl to the 4bbl carb and I was debating between these two,

Weiand
http://www.summitracing.com/parts/WND-8124P/
Edelbrock
http://www.summitracing.com/parts/EDL-2121/

They both are meant for idle to 5500 because my car is going to be on the street 99% of the time. Does anybody have a preference or any issues with fitment or any other defect with these intakes or is the difference as slim as what finish?

Also could someone suggest a good gasket kit? I see so many out there and I don't have any experience with any, this would be my first intake manifold swap. I hopefully will be ordering later this week, thanks guys.

 

Between the intakes, it's whether or not you like the polished finish and the work involved in keeping it that way. I'd imagine the power difference between the 2 is negligible. I'm a fan of Felpro gaskets. 2 numbers pop up in my link to Oreilly's. The difference between the 2? I dunno but each one should cost you less than 20 bux then send the other back:

Manifold Set FEL * MS90103-1 65-67 EXC HI-PERF & SPECIAL

Manifold Set FEL * MS90116-1 65-67 HI-PERF & SPECIAL

 

yeah, the difference between the 2 intakes is minuscule at best. based on some things ive read, i would even venture to say that the performance difference between the action+ or performer VS. the stock intake is equally minuscule.

you're basically just saving about 40 pounds of weight by losing that cast iron boat anchor of an intake you have now.

i usually use Fel-pro gaskets for all my stuff. i dont think the brand is as crucial as making sure the surface it is going to lay against is spotless and that you get sealer in the right places.

its an easy process that you can easily do in an afternoon with the help of a few cold ones

oh and grab a set of ARP bolts like these

http://www.summitracing.com/parts/ARP-454-2001/

 

Thanks guys. I figured the difference was how pretty I would want it. Defenitely going with the natural, I'm not big into the polished look. I would rather go with the natural.

Thanks for the gasket suggestion. That was my main concern. Getting that seal right the first time. I'm definitely going to follow the prescribed method of a few cold ones, ahh Sam Adams Summer Ale, beautiful. Plus I'm going to follow mustangsteve's directions.

Any other extras I should get to make this go smoother?

 

Having looked at a stock 4V intake compared to a Performer 289, there is a significant difference. Better runner design, taller plenum, and the weight savings alone makes it worth the swap. The Weiand is supposed to provide slightly better torque and peak hp numbers than the Edelbrock, and I'm happy with my Weiand Stealth, so I'd recommend the Weiand 8124.

I'd recommend the Edelbrock Performance 1250 gaskets. They're softer than the standard gaskets and have a seal printed around each port to help prevent leaks. I've never had a problem with these gaskets.

 

there is at least a 10hp power difference between the 8124 and the 2121 the 8124 is the better choice and a newer computer modeled design, I've seen a couple dyno tests on a 302 and a 350 both had signifigant gains in hp/tq with the wieand using the same carb.

 

There's actually a rather big difference between the 2 intakes. The Weiand is designed using more advanced computer flow modeling, and a new casting technique. It'll perform better than the Eddy intake by a measurable amount. You might not feel it though, but either intake will work well. I'd use the Weiand(I actually had one on this engine till I put the larger RPM Air Gap on). It pulls well past 6k too.

 

here is one of the things i said i had read on the subject:

"Dont waste your money on either one. I have tested many intake manifolds over the years, and the most you can expect would be FOUR more HP than the stock cast iron intake. I used to work at Edelbrock, and they dont want people to know how close they are to stock.

JOE SHERMAN RACING ENGINES"


found in this thread:

https://www.fordmuscle.com/forums/al...e-upgrade.html

 

Luckily I don't have a stock 4v intake, just a 2v so I don't have to worry about if the Performer vs the stock.

But I didn't think there would be that much of a difference between the Edelbrock and Weiand.

But I was comparing the 8124 to the 8020 Stealth http://www.summitracing.com/parts/WND-8020/ and I saw the big RPM range difference. The idle to 5500 and the idle to 6800. Is that due to one being a low rise design and the Stealth being a high rise? What application would that apply to?

 

The Stealth is designed for an engine that's going to wind up and flow more than stock. Whereas intakes like the Performer RPM claim powerbands of 1500-6500 in similar applications, the Stealth has a more modern design with larger, longer runners to increase low-rpm throttle response as well as high-rpm flow. I'm happy with mine, but I wouldn't run one on a stock motor.

The 8124 has smaller runners to improve lower rpm throttle response in stock or mild engines. If you want to help improve high-rpm breathing, a small carb spacer will increase the plenum volume to accomplish this. It's a good idea anyway, just to provide heat insulation for the carb.

While I agree with Jon in that you can't expect a massive increase over a stock 4V intake, either intake will flow better across the rpm band and will also offer improved throttle response by delivering a stronger vacuum signal to the carb. Compared to your stock 2V setup, you can expect a noticeable improvement in throttle response as well as a little more power at the top of the rpm range.