tunnel ram
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tunnel ram
i have recently purchased a edelbrock tunnel ram and would like some advice on what to top it with.im looking for some wow factor,but i dont want to top it with a toilet.i was thinking about topping it with 2 tbi units but after talking with the tbi guy's im not to sure about doing it.my delema seems to be with what cc heads i should use. the pistons in my block are mahle .030 flat top with the 4 valve pockets. i have a pair of center bolt tpi 65cc heads that were on this engine that ran great according to what i have found on the net this would put me at 10.5:1 compression
only problem with using these heads is the intake mod on the 4 center holes.
the next set of heads i have are 14014416 witch is a 58cc 305 head that will put me at 11.3:1 compression witch im told is to high for iron heads
and than i have a set of 3998993 witch is a set of smoggers from the 70's that are 75cc that are gonna run me at 9.6:1 or so.
now if any one can help me out with this than i would appreaciate it
i would like to stay small in carb size,some what lumpy in cam,and reasonable on compression (i dont have acces to air plane fule or drag fuel)
this car is only gonna be a week end play toy
only problem with using these heads is the intake mod on the 4 center holes.
the next set of heads i have are 14014416 witch is a 58cc 305 head that will put me at 11.3:1 compression witch im told is to high for iron heads
and than i have a set of 3998993 witch is a set of smoggers from the 70's that are 75cc that are gonna run me at 9.6:1 or so.
now if any one can help me out with this than i would appreaciate it
i would like to stay small in carb size,some what lumpy in cam,and reasonable on compression (i dont have acces to air plane fule or drag fuel)
this car is only gonna be a week end play toy
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Re: tunnel ram
ok help me out what cc head should i look for to mach this up and what size carb should i go with? give me some #'s
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Re: tunnel ram
If you plan on running a tunnel ram and have it run decent you need to match the heads, camshaft, intake, gears, and carb(s). There's no sense in running a tunnel ram with a peanut cam and low flow heads if you rarely see over 3000-4000 RPMs.
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Re: tunnel ram
so whats being said than is that the tunnel ram is useless as a week end runner. i want to stay with the dual four design im sick of having the same crap under my hood as every other jack as- in the area that is why i wanted to use the tunnel ram with the dual tbi. what is the recipe to make this work! I WANT TO BE DIFFERENT
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You can't use a large-cap HEI distributor with that intake, so start looking for a small cap version and a remote mounted coil.
Look into FAST. They have a dual quad TBI set-up.
What heads you use, what cam you run, what compression you have - don't matter. All you're trying to do is be "different", so slap that thing on the smogger heads with a $59 RV cam, cut a hole in your hood (if you even bother to put the hood back on), and run 87 octane fuel, even.
Wait, you want to be different with a lumpity cam. Okay, Thumper series Comp cam. Low lift so you won't have to change the smogger heads valve springs. Low LSA and high overlap for that lumpity cam that everyone wants.
Just so you know, the powerband of an Edelbrock tunnel ram starts at 3500 RPMs. That means until the engine gets up to that RPM, it will be a dog. Even for weekend cruising, it will be nasty to drive. Hopefully you'll be able to get across the intersection before the light turns green for the other direction. At least you'll be different from the Geo Metros (they'll be at the next intersection before you get through the first one).
If you're set on dual quad, but want to be able to drive it:
http://www.summitracing.com/parts/EDL-54251/
Polished, even. Then put the FAST dual quad TBIs on it.
Look into FAST. They have a dual quad TBI set-up.
What heads you use, what cam you run, what compression you have - don't matter. All you're trying to do is be "different", so slap that thing on the smogger heads with a $59 RV cam, cut a hole in your hood (if you even bother to put the hood back on), and run 87 octane fuel, even.
Wait, you want to be different with a lumpity cam. Okay, Thumper series Comp cam. Low lift so you won't have to change the smogger heads valve springs. Low LSA and high overlap for that lumpity cam that everyone wants.
Just so you know, the powerband of an Edelbrock tunnel ram starts at 3500 RPMs. That means until the engine gets up to that RPM, it will be a dog. Even for weekend cruising, it will be nasty to drive. Hopefully you'll be able to get across the intersection before the light turns green for the other direction. At least you'll be different from the Geo Metros (they'll be at the next intersection before you get through the first one).
If you're set on dual quad, but want to be able to drive it:
http://www.summitracing.com/parts/EDL-54251/
Polished, even. Then put the FAST dual quad TBIs on it.
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Re: tunnel ram
i like your point ill be relisting this intake back on ebay and i think ill be rethinking the whole hot rodding idea.i think the stock block and tbi will fit back in as easy as it cam out and the car can go down the road and be somebody elses issue to hopfully dream of doing somthing with
thanx for all the info guys but i think im gonna go wash my hands with this shi-
thanx for all the info guys but i think im gonna go wash my hands with this shi-
#9
Re: tunnel ram
i like your point ill be relisting this intake back on ebay and i think ill be rethinking the whole hot rodding idea.i think the stock block and tbi will fit back in as easy as it cam out and the car can go down the road and be somebody elses issue to hopfully dream of doing somthing with
thanx for all the info guys but i think im gonna go wash my hands with this shi-
thanx for all the info guys but i think im gonna go wash my hands with this shi-
![thumbs up](https://www.thirdgen.org/forums/images/smilies/thumbsup.gif)
#10
Re: tunnel ram
im running 041 heads. 64cc chambers fully ported with the works. 470 470 lift cam with dual edelbrock 500cfm avs carbs topped off with a summit racing shotgun scoop. ill post pics of the intake combo
![](http://i34.photobucket.com/albums/d129/rayray81/edelbrocktr1-1.jpg)
![](http://i34.photobucket.com/albums/d129/rayray81/edelbrocktr.jpg)
![](http://i34.photobucket.com/albums/d129/rayray81/edelbrocktr1-1.jpg)
![](http://i34.photobucket.com/albums/d129/rayray81/edelbrocktr.jpg)
![](http://i34.photobucket.com/albums/d129/rayray81/0522001438.jpg)
#11
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Re: tunnel ram
that is excatly what i was trying to do but was told all day yesterday that i cant do it. and turns out that like ive always said if some one says i cant some one else just did it!!
now i now know that what i have will not work together that was what i wanted to know. now i need to find out what i need to make this run but im not to sure i like the power band at 3500 rpm and not being able to get through a stoplight
i was planning to run two tbi units but after looking into it there is way to much involved in that so i think a couple of toilet's on top wont be so bad
i need to figure out the cam spec i need but it has to fit the fuel injected block. and also what heads to put on that will run with my flat top mahle pistons
they seemed to be a problem yesterday but i dont think stock dished pistons would hold up would they
this is just making me tired and i just got up
why is 5.7kid saying that i wouldent even get out of the stoplight?
is it the tpi cam or the heads?
i know they can be changed ill just have to find different parts so if anyone can give me some ideas it would be great would it be better to sell the tunnel ram and go with the low profile 2x4 intake would that make my selection any better?
now i now know that what i have will not work together that was what i wanted to know. now i need to find out what i need to make this run but im not to sure i like the power band at 3500 rpm and not being able to get through a stoplight
i was planning to run two tbi units but after looking into it there is way to much involved in that so i think a couple of toilet's on top wont be so bad
i need to figure out the cam spec i need but it has to fit the fuel injected block. and also what heads to put on that will run with my flat top mahle pistons
they seemed to be a problem yesterday but i dont think stock dished pistons would hold up would they
this is just making me tired and i just got up
why is 5.7kid saying that i wouldent even get out of the stoplight?
is it the tpi cam or the heads?
i know they can be changed ill just have to find different parts so if anyone can give me some ideas it would be great would it be better to sell the tunnel ram and go with the low profile 2x4 intake would that make my selection any better?
Last edited by 84z5350; 04-27-2011 at 06:03 AM.
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Re: tunnel ram
www.camquest.com
That's Comp Cams camshaft selection tool. It's the Dyno Program (HP Calculator). They basically provide direct recommendations on the camshaft after you enter in intake, CI, idle you want... etc.
That's Comp Cams camshaft selection tool. It's the Dyno Program (HP Calculator). They basically provide direct recommendations on the camshaft after you enter in intake, CI, idle you want... etc.
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Re: tunnel ram
im sur one of you carb guys have a set of heads that i could use sitting of a shelf somewhere does anyone have a use for a scat 383 crank?
i have one brand new sitting on my shelf!!!
flex plate and balancer included
you help me and ill help you!!
i know this is not where i should post this but i figured it might get the right attension here
i have one brand new sitting on my shelf!!!
flex plate and balancer included
you help me and ill help you!!
i know this is not where i should post this but i figured it might get the right attension here
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Re: tunnel ram
if i happen to sell the tunnel ram will the edelbrock c-26 work with the tpi heads and cam that i all ready have or am i still in the sam boat as the tunnel ram?
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Re: tunnel ram
i been told that the 993 heads are crap but when doing some research i ran accross this site where they are talking about this exact head CHECK IT OUT!!!
http://forums.corvetteforum.com/c3-t...3998993-a.html
THEY CANT BE TOTAL CRAP IF THEY WERE USED ON THE 72073 VETT L48 BLOCK
THEY MIGHT NOT BE A REAL BIG PERFORMER BUT THEY ARENT TOTAL CRAP
http://forums.corvetteforum.com/c3-t...3998993-a.html
THEY CANT BE TOTAL CRAP IF THEY WERE USED ON THE 72073 VETT L48 BLOCK
THEY MIGHT NOT BE A REAL BIG PERFORMER BUT THEY ARENT TOTAL CRAP
#16
Re: tunnel ram
my motors bored .30 over with dished pistons with 4 valve relief. im running a b&m 3000 stall converter also. i wouldnt run anything bigger than a 500 lift if you have stock heads. im bumping mine up to 525 lift, but my heads are well built also. with a tunnel ram, you want atleast a 3000 stall converter.
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Re: tunnel ram
i been told that the 993 heads are crap but when doing some research i ran accross this site where they are talking about this exact head CHECK IT OUT!!!
http://forums.corvetteforum.com/c3-t...3998993-a.html
THEY CANT BE TOTAL CRAP IF THEY WERE USED ON THE 72073 VETT L48 BLOCK
THEY MIGHT NOT BE A REAL BIG PERFORMER BUT THEY ARENT TOTAL CRAP
http://forums.corvetteforum.com/c3-t...3998993-a.html
THEY CANT BE TOTAL CRAP IF THEY WERE USED ON THE 72073 VETT L48 BLOCK
THEY MIGHT NOT BE A REAL BIG PERFORMER BUT THEY ARENT TOTAL CRAP
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Re: tunnel ram
ok easy guy's im not looking for big hp numbers im looking for somthing that is drivable but still has the wow factor and like i said im willing to send the tunnel ram down the road and buy the edelbrock c-26 with 2 4's at small cfm of about 390-400
can anyone give me a recipe for cam and head to go with my piston's to match this intake or is this gonna be another YOU SHOULDENT DO THAT EITHER SPEECH?
WHAT COMPRESSION RATIO SHOULD I AIM FOR WITH THAT INTAKE
WHAT HEAD SHOULD I USE TO GET IT
can anyone give me a recipe for cam and head to go with my piston's to match this intake or is this gonna be another YOU SHOULDENT DO THAT EITHER SPEECH?
WHAT COMPRESSION RATIO SHOULD I AIM FOR WITH THAT INTAKE
WHAT HEAD SHOULD I USE TO GET IT
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Re: tunnel ram
What kind of wow-factor are you looking for? "Wow that looks cool", or "wow that's fast"?
#21
Re: tunnel ram
besides my motor being bored .30 over, the bottom end is pretty stock. find a set of 64cc 2.02 1.60 heads and go from there. if you go with the c-26. edelbrock sells calibrated dual carb carbs right out of the box. if you want my list of parts with part numbers, message me. my car will be a weekend driver
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No, I'm saying you're wrong. A stock factory SBC block can't be bored 0.30" over.
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Re: tunnel ram
![lmao](https://www.thirdgen.org/forums/images/smilies/lmao.gif)
![lmao](https://www.thirdgen.org/forums/images/smilies/lmao.gif)
You CANT bore it 0.30" over but you CAN bore it 0.030" over.
Three tenths and thirty thousandths are two completely different measurements.
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Getting the decimal point one place off cost the U.S. taxpayers about $1B a few years ago...
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