tunnel ram vs. single plane
#1608960
04/18/14 12:50 PM
04/18/14 12:50 PM
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Joined: Aug 2011
Posts: 250 Saskatchewan (SK)
79410aspenrt
OP
enthusiast
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OP
enthusiast
Joined: Aug 2011
Posts: 250
Saskatchewan (SK)
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my 440 w2 small block currently has a holley pro dominator tunnel ram with 2-650 holleys. I have a holley strip dominator single plane with a 950 pro systems that I would like to try.
will I lose any power switching to the single plane
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Re: tunnel ram vs. single plane
[Re: Locomotion]
#1608963
04/18/14 02:04 PM
04/18/14 02:04 PM
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Joined: Jan 2003
Posts: 684 St. Charles, MO.
Slingshot383
mopar
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mopar
Joined: Jan 2003
Posts: 684
St. Charles, MO.
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Old wives tale, tunnel rams are not hard to tune, you just have to think a little different.
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
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Re: tunnel ram vs. single plane
[Re: Slingshot383]
#1608964
04/18/14 02:18 PM
04/18/14 02:18 PM
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Joined: Dec 2009
Posts: 20,640 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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Quote:
Old wives tale, tunnel rams are not hard to tune, you just have to think a little different.
I totally agree. My TR is actually easier to drive, stage, foot brake or trans brake. I have two BG 750's on my 408 and I'm sorry I didn't get the 850's now.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: tunnel ram vs. single plane
[Re: ProSport]
#1608968
04/18/14 07:25 PM
04/18/14 07:25 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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I have always had good luck with big block tunnel rams--always a big MPH jump in the 1/4 mile
Stay Away from and never use a single 4 TR--the end cylinders go crazy lean.
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Re: tunnel ram vs. single plane
[Re: Rob C]
#1608972
04/19/14 01:10 PM
04/19/14 01:10 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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Quote:
That is a really good intake. Very old. Take the time to jet and set it up. There is a lot more labor in that set up. IF the engine is a stout one that can take advantage of such an induction system, you'll go faster.
RobC, which intake are you referring to?
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Re: tunnel ram vs. single plane
[Re: 79410aspenrt]
#1608974
04/19/14 02:31 PM
04/19/14 02:31 PM
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Joined: Dec 2009
Posts: 20,640 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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One tip I can give you is don't use any power valves.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: tunnel ram vs. single plane
[Re: 82ramIndy493]
#1608976
04/20/14 12:01 AM
04/20/14 12:01 AM
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Joined: Jan 2003
Posts: 10,008 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,008
Frostbitefalls MN (Rocky&Bullw...
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Tunnel rams are able to be ram tuned better for the rpm range usually, due to the extra runner length. I believe that is the main advantage, along with usually less restriction at WOT. There is always an exception(G3 Hemi?) though to any rule, or so it would seem.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: tunnel ram vs. single plane
[Re: gregsdart]
#1608977
04/20/14 12:30 AM
04/20/14 12:30 AM
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Joined: Oct 2004
Posts: 5,618 long island NY
Ari440
master
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master
Joined: Oct 2004
Posts: 5,618
long island NY
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511ci 13.1 comp 277/800 roller indy cnc345s indy-2 adapter 1050 ------ 9.91 indy tunnelram two 750s ------9.85 went two times got sent home ------ no tuning
1.39 9.85 - 137 mph
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Re: tunnel ram vs. single plane
[Re: 82ramIndy493]
#1608979
04/20/14 05:28 PM
04/20/14 05:28 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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Quote:
What factors about the way the engine is built decide if a tunnel ram is a better choice over a single plane intake and one 4 bb carb? I have a 493 at 12 to 1 comp with OOTB Indy SR's with a comp 262 575 with 1.6 rockers, plenum ported Victor intake and 1050 Dominator. Would this engine benifit from a TR?
I bet you'd be at least a tenth quicker with a tunnel ram and the right carbs. Carbs are key, I ran two 750 Quickfuel tunnel ram carbs and they were perfection right out of the box.
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