MP Hemi Crossram ?s
#1575841
02/08/14 12:55 PM
02/08/14 12:55 PM
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Joined: Apr 2004
Posts: 364 Houston, Texas
Slant6pak
OP
enthusiast
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OP
enthusiast
Joined: Apr 2004
Posts: 364
Houston, Texas
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Hey guys,
I'm planning a future Hemi build for my 1968 Coronet. I'm planning on building a "Day 2" style hot rod and would like run a cross ram intake (yes on the street).
I had originally wanted to find an old Rat Roaster crossram for the car but I'm quickly turning against that idea. Although they are vintage and cool... there is no cost savings vs. the MP manifold. I like the fact that you can buy correct linkage for the MP manifold, it has provisions to mount the coil, far less danger of blow ups, etc.
I've been trying to find some real world experiences with this intake and haven't found much.
I've read these new manifolds are taller than the originals and that air cleaners will not fit under the hood... which is ok with me because I am going to run and RO-style hood scoop.
But I've also read two other things that concern me... I read a passing comment that they are not very good intakes, and that they are no longer in production?
Can somebody elaborate? Just to be clear... I'm not looking for max power, I'm sure a single carb on a modern manifold will make more power. I'm going for the wow factor.
Thanks
2016 Challenger Scat Pack Shaker 1000 ci Brass Era Speedster project
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Re: MP Hemi Crossram ?s
[Re: Slant6pak]
#1575844
02/08/14 03:22 PM
02/08/14 03:22 PM
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Joined: Jan 2005
Posts: 1,466 malvern, ohio
3ddart
pro stock
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pro stock
Joined: Jan 2005
Posts: 1,466
malvern, ohio
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i run the mp crossram on my hemi dart clone and the only real issue i have is idle speed. in park i'm at 1300 but in drive it drops to 950 ( high idle speed is 1 of the things warned about in the 68 press release on the darts and cudas). it drives fine and i've put around 900 street miles a yr on it the last 3 yrs. motor is .020 over 426 with a 236/240 dur@.050 hyd. roller, hedman race headers, 727 and 410 dana. i have heard comments both ways as to it being a good intake or not and i really don't have any strip times on it to tell you as far as performance level. i,ve had some friends drive it and been told it,s anywhere from a low 12 sec car to high 10 sec car lol. i know every time i see the old style croosram my mouth waters for 1 but like you $2500 or more for eyecandy is too much in my opinion. dave
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Re: MP Hemi Crossram ?s
[Re: 3ddart]
#1575845
02/08/14 04:12 PM
02/08/14 04:12 PM
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Joined: Apr 2004
Posts: 364 Houston, Texas
Slant6pak
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OP
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Joined: Apr 2004
Posts: 364
Houston, Texas
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3ddart,
Thank you for your insight. Can I ask what air cleaner to do you have on your engine?
Also do you have any shots of the car with the hood closed? How is your hood clearance?
I'm planning on running a 67 RO style scoop on my Coronet... but don't want to run the something as tall as the 68 SS scoop.
2016 Challenger Scat Pack Shaker 1000 ci Brass Era Speedster project
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Re: MP Hemi Crossram ?s
[Re: old_racer]
#1575847
02/08/14 05:53 PM
02/08/14 05:53 PM
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Joined: Mar 2006
Posts: 9,847 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,847
MI, usa
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Quote:
Two of my good friends in N/ss run 9.50s with the mopar crossram , so I think they do work. One has a 572 and the other a 540cu in.
Russ are these Hemi or Wedge? Doug
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Re: MP Hemi Crossram ?s
[Re: Slant6pak]
#1575849
02/08/14 06:30 PM
02/08/14 06:30 PM
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Joined: Jan 2003
Posts: 2,763 Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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I've raced a lot of years with the Rat Roaster and crossrams. For the street, forget the Rat Roaster.
We use the MP crossram on our NSS car, and it works great. It is a good piece. It is high, and by it's type of construction there is a lot of places for a vacuum leak, but that is not big deal. Pay attention and you'll be fine.
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: MP Hemi Crossram ?s
[Re: Steve1118]
#1575850
02/08/14 08:26 PM
02/08/14 08:26 PM
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Joined: Apr 2004
Posts: 364 Houston, Texas
Slant6pak
OP
enthusiast
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OP
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Joined: Apr 2004
Posts: 364
Houston, Texas
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My car is a 1968 Coronet, It currently has stock flat hood that isn't mint by a long shot, so I don't mind cutting it for clearance. But I don't want to run the volkswagen catcher tall scoop... just the regular 67 style RO/WO scoop. My car will be kind of a poser... I'm only looking for around 550hp. Although I want it to look mean, I still want the car to be a street toy. I don't want to shim the K-member or run a motor plate. I'm planning on running power steering, power brakes, and A/C with a low mount compressor. Not too much to ask, huh
2016 Challenger Scat Pack Shaker 1000 ci Brass Era Speedster project
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Re: MP Hemi Crossram ?s
[Re: Slant6pak]
#1575853
02/09/14 12:23 AM
02/09/14 12:23 AM
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Joined: Mar 2006
Posts: 2,675 Mt. Eden Ky.
Hemi Allstate
master
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master
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
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I had originally wanted to find an old Rat Roaster crossram for the car but I'm quickly turning against that idea. Although they are vintage and cool... there is no cost savings vs. the MP manifold. I have this piece ready to go when I finish experimenting with the Indy 426-2 and -3 intakes that I have for mine. I put a lot of work into this RR and I hope it will work OK. I love the look. Mark
1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: MP Hemi Crossram ?s
[Re: dvw]
#1575855
02/09/14 01:23 AM
02/09/14 01:23 AM
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Joined: Dec 2003
Posts: 1,401 Wi.
old_racer
pro stock
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pro stock
Joined: Dec 2003
Posts: 1,401
Wi.
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Quote:
Quote:
Two of my good friends in N/ss run 9.50s with the mopar crossram , so I think they do work. One has a 572 and the other a 540cu in.
Russ are these Hemi or Wedge? Doug
Hi Doug, they are Hemi's , Mopar x-rams and stock 780 carbs, they showed me how to jet mine. alot leaner than you think. I can't remember what intake Scott has on his 9.00 black dodge.
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Re: MP Hemi Crossram ?s
[Re: Hemi Allstate]
#1575856
02/09/14 02:08 AM
02/09/14 02:08 AM
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Joined: Apr 2004
Posts: 364 Houston, Texas
Slant6pak
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OP
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Houston, Texas
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Thank you those who have replied,
I have another question for you guys. I've been comparing the photos posted to pictures of stock 68 Hemi Coronets and it appears that a Hemi in an A-body sits quite a bit higher than in a B-body?
Am I correct in the assumption that the engine bay of a Dart is not only narrower, but shallower as well?
2016 Challenger Scat Pack Shaker 1000 ci Brass Era Speedster project
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Re: MP Hemi Crossram ?s
[Re: old_racer]
#1575858
02/09/14 01:33 PM
02/09/14 01:33 PM
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Joined: Apr 2004
Posts: 364 Houston, Texas
Slant6pak
OP
enthusiast
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OP
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Joined: Apr 2004
Posts: 364
Houston, Texas
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That would be awesome. Thank you
2016 Challenger Scat Pack Shaker 1000 ci Brass Era Speedster project
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