2105 vs. 7105

[bn69stang]

Nice intake , pick it up for sure .. i have a streetmaster that is untouched and would love to send it to joe d craine so he could massage it , and then put it on a 463 build . that street dominator will allow you to use your spacer as well .. Bud

[unclewill]

I offered $200 for it and the lady acted like I was nuts - anything above that I'd just as soon buy a new RPM.  AM I NUTS?

[1967 XR7 GT]

48mm Webers can be opened up to 51.5mm (JayCee Enterprises)  and run as large as a 48mm Venturi which support additional flow requirements, that is if you already have the 48mm IDA Webers, there are also the Gene Berg Carbs ranging from 52mm up to 60mm carbs, but at a substantial cost, another option for your Weber manifold is Fuel Injection, Borla has a nice setup.

I also have a brand new Blue Thunder (or Dove?) 4X Weber manifold sitting in the closet.  It will probably cost me at least $3k to get it set up to run, I doubt it will fit under the ram air hood, and it may be a pain to tune...but Jees, it is tempting to run the 2105/850 dbl pumper until I sell my S.O. long block then take the plunge on the Webers...I read somewhere the Webers can't support 482 cubes - anyone care to chime in on that one?

Also, the car is relatively heavy and midrange torque is my goal.  Perhaps the high rpm hp loss would be mitigated by higher port velocities boosting torque?
Are the heads the limiting factor or the intake sub-6000 rpm?

[bn69stang]

I dont think i would pay more than that , maybe up to 250.00 , but no more .. Bud

[unclewill]

Thanks, Bud, the RPM is $400 including rebate so 1/2 of new sounds fair to me.

[My427stang]

I am all for getting used cheap but:

If the RPM costs 400 and potentially does not allow the use of Ram Air due to carb location, and the SD is in very nice shape, it has value that the RPM doesn't.

That being said, nice ones bring 250-275 and potentially more on Ebay, so I am not saying pay 400, but if it's nice, don't let 50 bones keep you from solving the problem on a nice engine.  Look real close for pitting, cracks/stripped threads, etc, and then if it's nice enough, I wouldn't let a 50 dollar bill stop you

[jayb]

The Mustang shakers have some elongated bolt holes to allow for a small amount of movement at the scoop.  Pretty sure that the RPM with shaker could be made to fit the factory hood; it seems I've seen a post or two where people have done that. 

[unclewill]

Mine's not a shaker, the Torino Cobra uses a thick foam gasket to seal to the hood.  I think I have enough leeway to use either.  I'll talk to the guy tomorrow night but I'm about sold on the new RPM - no worries.  Another friend talked me out of the Webers - and he has 4 sets of IDAs in his garage!

[BH107]

With that kind of build I would definitely recommend stepping up to a hydraulic roller cam too. You are doing the displacement and great top end a huge disservice by going with that hydraulic flat tappet cam. I have a local friend that just went through the same process with an engine for his truck. He went with a 482 and BBM heads, and then had Brent spec a custom hydraulic roller cam. It made 550hp and 640ft/lb of torque with a pretty basic bolt together package.

[bn69stang]

sounds like a nice package for sure .. Bud

[unclewill]

I already have the cam, so in it goes!  I also ordered the RPM today.  The seller of the Holley manifold did not want to sell it separately from a pair of built up Edelbrock heads and a POS Holley carb.  Bad JuJu came through the phone line from these people too, so I'll spend my money elsewhere!

[My427stang]

I ran my 489 with a very similar combo, Erson solids at 242/248@.050, ran a 1000 vac sec Holley on an RPM with a 1 inch open spacer. Heads are ported Edelbrocks and the intake was ported too.

It was very strong.  It got stronger with the ported Victor and EFI though.  Either way you'll have a strong running combo

[unclewill]

Thanks Ross!  It's gotta be stronger than my current iron head 427, there is no replacement for displacement!