Re: sp2p intake for 440 motor home
[Re: mgoblue9798]
#2734070
01/18/20 03:50 AM
01/18/20 03:50 AM
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Joined: Jan 2003
Posts: 3,122 Auburn WA
Dave_J
master
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master
Joined: Jan 2003
Posts: 3,122
Auburn WA
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A buddy ran one on his 440 in a 30 foot Wini. It was just a bit smaller than the Iron 4bbl but way lighter. (Whats a few pounds in a 30 foot Wini???) I think it has about the same port size as a B-400 2 Bbl. It should be a spreadbore mount. His gave him about 3 more inches of vaccume across the whole RPM range. It did run flat at about 5200 RPM but the bottom end torque was better. Now from under the bumper run 2 or 3 each 4 inch dryer vent pipes up to the engine. Put two in the air cleaners snorkel and the third to blow cooler air on your Thermoquad. Cooler air in those smaller ports should work. Picture on FBBO: https://www.forbbodiesonly.com/moparforum/threads/edelbrock-s-p-2-p-440-intake.139948/
Retired, US ARMY 1973-1994 ASE mechanic, Electrical 1994-1997 Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
03 Suzuki Burgman 650(Burger King) Scooter 65 Formula S Cuda 78 Little Red Express Truck 98 Buick Regal (wifes car)
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Re: sp2p intake for 440 motor home
[Re: moparx]
#2734130
01/18/20 11:54 AM
01/18/20 11:54 AM
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Joined: Feb 2005
Posts: 4,333 Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
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never ran one in a big block, but i gave one for a small block to my one buddy for a 318 in a 72 duster. that thing runs real good with a 2.94 gear, 500 elelbrock carb, and a stock converter, but does run out of steam around 5200 rpm. he never runs it hard anyway, so who cares ? it works for him. I did one in a 318 application too. It was a win in every way.
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Re: sp2p intake for 440 motor home
[Re: BSB67]
#2734159
01/18/20 12:39 PM
01/18/20 12:39 PM
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Joined: Jan 2008
Posts: 2,375 ILLINOIS
volaredon
top fuel
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top fuel
Joined: Jan 2008
Posts: 2,375
ILLINOIS
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Add me to the list of people who ran one of those on a 318. 69 motor with a comp 252 cam, 625 AFB, in a 79 short bed 2wd truck with manual steering and brakes, 833 OD and 3.55 gears in an 8-3/4 from a 60s truck I couldn't believe how well that thing ran. The way I used that truck at the time I should have had a 1 ton. Towing, hauling with the back bumper about dragging at times, but when empty I drove it like I stole it, in those days. Great mileage when empty or nearly so, plenty of power for what I was doing. Idk how much of how it ran had to do with the intake but I'd try another. As far as the running out of steam at 5200 revs, I can honestly say that I don't think that I ever tried to get much of anything that I have ever owned much over 4000 revs. So if that was the only limitation, it wouldn't bother me at all.
Back when I had carbureted vehicles I would put a vacuum gauge on to my vehicles quite often, looking for that last little bit that I could get out of them, and it did seem like I had more vacuum on the gauge from that engine than any of the other 318s that I had around then, which were quite a few.
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Re: sp2p intake for 440 motor home
[Re: Jjs72D]
#2734235
01/18/20 03:53 PM
01/18/20 03:53 PM
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Joined: Jan 2003
Posts: 14,531 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,531
So. Burlington, Vt.
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My one SP2P experience......
396 BBC in a 68 Camaro........ it was horrible.
I’ve never experienced anything quite like it.
I tried multiple carbs on it, and they all had the same trait.....or rather, the trait was consistent with a few different carbs. First off...... the motor was absolutely “done” at 4500.
If you were cruising along pretty good at say 3500-4000..... and then stepped on it, the farther you pushed the pedal down the weaker it felt. It didn’t feel strong at any point when driving the car. It’s not like it started out great then nosed over...... it was just weak everywhere.
We pulled it out and dynoed it........283hp.
For a low end grunt 440, I’d use the std Performer. I had one on a re-ringed 440 in my car for a few years...... that thing had fantastic bottom end snap.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: sp2p intake for 440 motor home
[Re: IcorkSOAK]
#2734296
01/18/20 08:01 PM
01/18/20 08:01 PM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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Let’s hear some MPG numbers in everyone’s experience? .... On a 440 powered motor home, class A,B or C? Probably near 8.5 MPH with Grandma driving, 5.5 with me driving it
Last edited by Cab_Burge; 01/18/20 08:03 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: sp2p intake for 440 motor home
[Re: Cab_Burge]
#2734301
01/18/20 08:28 PM
01/18/20 08:28 PM
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Joined: Jul 2008
Posts: 30,632 Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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Let’s hear some MPG numbers in everyone’s experience? .... On a 440 powered motor home, class A,B or C? Probably near 8.5 MPH with Grandma driving, 5.5 with me driving it No YOU .., 5.5 SPP ... smilies per post ! And I hear Tom is going to start charging you 1$ per smilie over that limit ! And ur a more self-professed seasoned citizen than Granny is ... 5.5 MPH driving a motor home!
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Re: sp2p intake for 440 motor home
[Re: elmor353]
#2734363
01/19/20 06:42 AM
01/19/20 06:42 AM
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Joined: Jul 2008
Posts: 30,632 Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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In the mid 80's I put one on a 305 Chevy half ton pickup, with a 400 Holley. It made the 305 more of a dog than it already was. I lost 4 mpg over the factory 2bbl. I yanked it and put the stock intake and carb back on. I can't imagine why anyone would want to use it on a 440. As stated, the factory intake or Eddy Perfomer makes better sense. Yo eL ..... BLAME IT on that pig fat Berri crab ! But seriously... your experience does not match OTHER PEOPLES hands on experience that actually have used that piece for an extended period of time CLEARLY.... it is not a horse power piece ... but as far as low rpm GRUNT and MPG ... it works. But as I asked mGo... what’s his gearing ... that’s a big factor
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Re: sp2p intake for 440 motor home
[Re: IcorkSOAK]
#2734483
01/19/20 01:34 PM
01/19/20 01:34 PM
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Joined: Jan 2003
Posts: 14,531 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,531
So. Burlington, Vt.
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On a BB Mopar the manifold swap is as easy as it gets...... so if the OP tries the SP2P and doesn’t like it...... it’s an easy swap to something else.
I would have to imagine that a pushing a MH along is similar to light towing. In other words, you’re rarely cruising along at low rpm and very light throttle settings.
The motor is “working” 90% of the time. Especially if you’re towing with the MH.
I can see where if one were to be able to run a motor in that low rpm/low throttle situation the SP2P might be able to be optimized to see a slight gain in mileage........ but if the motor will be primary operated in a way where the throttle is fairly open, in mid-range rpm, and you’re trying to make some power for hauling........ it def wouldn’t at all be my choice.
I’m not telling the OP not to try it if he’s inclined to........ I’m just informing him to be prepared for the possibility he won’t like it.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: sp2p intake for 440 motor home
[Re: fast68plymouth]
#2734818
01/20/20 10:41 AM
01/20/20 10:41 AM
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Joined: Sep 2003
Posts: 20,235 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 20,235
north of coder
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my buddy's 318 gets around 20mpg if i remember correctly. but as i said earlier, he and his wife, doesn't beat on the car like i would. i got that intake way back in the 77-78 time period, and i was interested in the holley carb that was on it to re-sell. i made out good back then, and he made out good when i gave it to him. one of the reasons i "think" it works so well [for him], is the fact the runners are the 318 port size, which keeps the port velocity up, and the mix doesn't crash into the port openings on the head like so many other intakes with the 340/360 port openings do. just my guess. your mileage will vary.
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