Edelbrock TR 2X

[Flatmvn]

Hey Guys need a little help here. I have a buddy that is putting a Edelbrock TR2X tunnel ram on his BBC. The manifold has the bolt holes drilled for inline carbs. Problem is that the Holley 850 Double Pumpers That he has won't fit inline on the manifold and you can't turn them sideways because there is no bolt pattern for that. There is no way to re-drill the top to make a sideways mount bolt pattern. Any Ideas on adapters or what carbs he needs to make things work.

Yes Art, I already suggested putting injection on it, not gonna happen. Also suggested double sided tape, epoxy and welding the carbs to the manifold:D:D, buddy doesn't think any of those suggestions are viable.

[babybeze]

660 center squirters work great on Dads 427 with the same manifold.

[gfinishline]

I think Trans-Dapt makes an adaptor that turns the carbs 90 degrees. If not, I have a TIG and a Mill, we can make it into anything we want.

[Flatmvn]

660 center squirters work great on Dads 427 with the same manifold.

Not enough CFM with the 660's. 468 with 12 to 1 comp and 990 heads. need to stick with the 850's.

[Flatmvn]

I think Trans-Dapt makes an adaptor that turns the carbs 90 degrees. If not, I have a TIG and a Mill, we can make it into anything we want.

I will look into the Trans-Dapt deal. Yea I suggested the TIG and the mill thing also and I got a funny look on that one also..:D

[RiverRacer]

Hey Guys need a little help here. I have a buddy that is putting a Edelbrock TR2X tunnel ram on his BBC. The manifold has the bolt holes drilled for inline carbs. Problem is that the Holley 850 Double Pumpers That he has won't fit inline on the manifold and you can't turn them sideways because there is no bolt pattern for that. There is no way to re-drill the top to make a sideways mount bolt pattern. Any Ideas on adapters or what carbs he needs to make things work.

Yes Art, I already suggested putting injection on it, not gonna happen. Also suggested double sided tape, epoxy and welding the carbs to the manifold:D:D, buddy doesn't think any of those suggestions are viable.

Louis, your buddy needs to be edumacated!. LOL.. You can buy adapters to run them sideways kinda ugly cast things, I ran that manifold and I just made a plate to run my 660's sideways, not a big deal!..

[RiverRacer]

Not enough CFM with the 660's. 468 with 12 to 1 comp and 990 heads. need to stick with the 850's.

Wow, must be one hell of a set of hogged out 990's and a monster cam to need more than 1320cfm!..:eek:

[369]

offenhauser makes the adapters...just got some for a buddy's project last week

[TonkaDriver]

Hey Guys need a little help here. I have a buddy that is putting a Edelbrock TR2X tunnel ram on his BBC. The manifold has the bolt holes drilled for inline carbs. Problem is that the Holley 850 Double Pumpers That he has won't fit inline on the manifold and you can't turn them sideways because there is no bolt pattern for that. There is no way to re-drill the top to make a sideways mount bolt pattern. Any Ideas on adapters or what carbs he needs to make things work.

Yes Art, I already suggested putting injection on it, not gonna happen. Also suggested double sided tape, epoxy and welding the carbs to the manifold:D:D, buddy doesn't think any of those suggestions are viable.

Has he thought about running Predators instead of Holleys? I ran a pair on a 468. They are variable venturi upto 900 cfm each. I thought throttle response was way better than Holleys and they have a smaller footprint so can be run inline.

[raysoninoz]

Wow, must be one hell of a set of hogged out 990's and a monster cam to need more than 1320cfm!..:eek:

Hey RR I agree 100%. I ran a 454+ 60 thou on the same manifold with a pair of 660s with the secondry metering plate and ran them inline. Manifold was port matched to rectangle heads that my head man opened up so you could nearly stick your fist into and went berzerk in the chambers (gee he did a great job!):) Ran a big, bigger, biggest cam (not roller) for drags in a Tr Cole, I spun that engine (2 bolt) to 7500rpm and still had to back off to smaller jets...:confused:

Cheers, from Oz 13deg C brrrrr:(

[RiverRacer]

Hey RR I agree 100%. I ran a 454+ 60 thou on the same manifold with a pair of 660s with the secondry metering plate and ran them inline. Manifold was port matched to rectangle heads that my head man opened up so you could nearly stick your fist into and went berzerk in the chambers (gee he did a great job!):) Ran a big, bigger, biggest cam (not roller) for drags in a Tr Cole, I spun that engine (2 bolt) to 7500rpm and still had to back off to smaller jets...:confused:

Cheers, from Oz 13deg C brrrrr:(

That's 55 dgrees, it's winter down there,LOL..:D

[gfinishline]

"raysoninoz" did you ever put a vacuum gauge at the base of one carb? I feel you had so much vacuum at WOT, that you were "pulling fuel" out of the bowls. (so you went down on jets) The "660's" gave good low end throttle responce when the motor didn't have any. Just remember! The original Red Camero that Edelbrock had (1967) the "old style" tunnel ram on, was a SMALL BLOCK with 660's! To me this is the same "deal" as those old Dan Olson envelope scoops, it "seemed right" at the time. I hope we know better now.

[Norcal_73]

running the same intake here on a BBC. still on the search for those 660s on CL (waiting on that deal).

[RiverRacer]

I ran 660's on my 440 all GM junk flat tappet cam 7500+, and with stock jetting and at 500ft the plugs were "clean"!..

http://www.v-driveboat.com/vweb/attachment.php?attachmentid=684&stc=1&d=1215662330

[warpt71]

Same set up I got Art :D :D :D

[RiverRacer]

Now for the super no brainer simple shit, throw a set of injectors on and forget about it!.. Oh wait that wouldn't work, you'd get bored!..:D

[warpt71]

Hahahahahahahahahaha

[RiverRacer]

Same set up I got Art :D :D :D

Did you put metering blocks on the secondaries??.. Changing the bowls and running them sideways is a huge improvement over stock inline, gotta admit for crbejemators they are easy to make them run!..:D

[RiverRacer]

Hahahahahahahahahaha

Like that huh, it is true though I didn't touch mine for 3 years just run it and park it!..:D

[gfinishline]

Those are not 660 bowls! And they are not injectors! That ain't a "Tr-2X" either. I thought tunnel rams were designed to promote "air density" rather than "velocity", am I wrong? 660's on a large high RPM motor will be the restriction and cause "velocity" in the intake, while enhancing the low end throttle responce. I thought that tunnel rams originally were designed to 'slow down the air flow' and create air density, so they need carbs sized to the "maximum" flow the motor can take, not the minimum. (bottom end stuff) I'm talking about the old, higher, large plenum, cast tunnel rams. (Tr-2X...)

[warpt71]

Did you put metering blocks on the secondaries??.. Changing the bowls and running them sideways is a huge improvement over stock inline, gotta admit for crbejemators they are easy to make them run!..:D

It has the metering blocks on the secondaries, Not turned sideways or the different bowls. The cams have been cut the bring the secondaries on later though. I dont need to dump any more money into them, that will only prolong the injection!

[warpt71]

I have a different intake too. I think its an old UR 2X?

http://www.v-driveboat.com/vweb/attachment.php?attachmentid=686&stc=1&d=1215664054

[RiverRacer]

It has the metering blocks on the secondaries, Not turned sideways or the different bowls. The cams have been cut the bring the secondaries on later though. I dont need to dump any more money into them, that will only prolong the injection!

I hear ya there, only reason I did mine is because I already had a bunch of junk laying around from over the years so I pieced them up, otherwise I'd a never bought the $hit!..:D

[RiverRacer]

I have a different intake too. I think its an old UR 2X?

http://www.v-driveboat.com/vweb/attachment.php?attachmentid=686&stc=1&d=1215664054

Yep that's what it is, I had one at one time they are a good intake!..

[warpt71]

Seems to be working just fine, the tach as seen 7200!

[RiverRacer]

Seems to be working just fine, the tach as seen 7200!

The Wieand is a tad better though, I gained 200rpm from it and it had a bit more bottom end to it, other than that it's still a good piece!..

[babybeze]

As I recall UR2x is the top and tr2x is the base.

[ABBOTTCRAFT]

The sideways adaptor plates can be bought thru Jegs or Summit...

[RiverRacer]

As I recall UR2x is the top and tr2x is the base.

That is correct!.:D

[RiverRacer]

The sideways adaptor plates can be bought thru Jegs or Summit...

Or any speed shop, better yet just make em!..:D

[poncho]

As I recall UR2x is the top and tr2x is the base.
I have this manifold with two HP750 holleys facing forward and have had zero issues is there a gain i dont know about?

[raysoninoz]

"raysoninoz" did you ever put a vacuum gauge at the base of one carb? I feel you had so much vacuum at WOT, that you were "pulling fuel" out of the bowls. (so you went down on jets) The "660's" gave good low end throttle responce when the motor didn't have any. Just remember! The original Red Camero that Edelbrock had (1967) the "old style" tunnel ram on, was a SMALL BLOCK with 660's! To me this is the same "deal" as those old Dan Olson envelope scoops, it "seemed right" at the time. I hope we know better now.

No gfinishline, we never did put a v gauge on them. But we did fit a F5000 type scoop on top of them and 'rammed' the air in. Yes they were great down low and good for a holeshot then at about 80mph the rammed air (from the scoop) seemed to come into play and created velocity within the system. My idea was feed a heap of air in along with as much fuel as it could carry, burn it, and get rid of it pronto ready for the next cycle. That was the general idea which seemed to work ok. Afterall, I'm a wood butcher not a mechanical engineer, but we had fun (that was 20 odd years ago).:confused:
Cheers

[gfinishline]

I must say that from my experiments, we found that the scoop opening needed to be (aprox) 18" above the drivers head (top) to actually get any RAM AIR EFFECT. The deck and hull line with the attack angle of the boat, creates a low pressure area (aprox) 18" above the dash board area of the boat. This along with the other "broken air" around the driver, tends to make 'low scoops' without any ram effect. A low scoop/intake would be VERY EFFECTIVE if it went all the way up to the bow/ cap rail (front) area of the hull. There it would be directly pressurized from incoming air.

[raysoninoz]

gfinishline, if you have a look at the coffee coloured Cole #158 in my photos you will see the set up I used. The scoop is 18" higher than something I'm sure??? lol :D I remember feeling & seeing a flame one day when it backfired back up through the scoop and shot a flame half way across the front of the deck. It also blew the front of the scoop off and scared the bejesus out of me.:eek:
Cheers

[gfinishline]

Yes, I did look at your picture. It seems to me that you are sitting very low in the boat. I would say that the upper half of the scoop opening is in the airstream, and the rest is in your turbulence. When the boat is "up and set", air pressure WASHES over the leading edge of the deck. This wave of air continues over the "angled down deck" and actually creates a 'low pressure area' at the dash and forward cockpit. If you were not "in the air stream", your scoop would have had much more effect. But, you are like a "mighty oak" in the wind of speed and your body creates turbulence that effects the air scoop on the motor. I would say that scoop needs to be another 6" to 8" higher to actually be "packing air". But HEY, it looks good!

[raysoninoz]

Hi there gfinishline, I thought it looked good too! Thank you for the air flow interpretation. I just thoroughly enjoy reading your inputs & I say that quite sincerely.
What are your thoughts (or anyone elses for that matter on this set up) Blown big block (871) with a big & ugly enderle injection plus a spacer (which is approx. 3''). Now this get those 5 9/16'' butterflys out into space BUT how will the air turbulence from this metal monstrosity effect the wing, which is on 36'' struts?:confused:

Sorry fltmvn to hijack this thread. How did your mate go with getting an adaptor plate? After all this is what THIS thread is about!:o
Cheers

[Flatmvn]

What a thread Hijacking I have never heard of that on these boards.

We found some adapter plates at Summit. They are made by Edelbrock and were $50, Just what he needed.

Carry on.

[gfinishline]

The blower will FIND the inlet air. Many "K" boats run them backwards. I hope you have some 'reasonable overdrive' in that 8-71 with the "HAT" on it. If you don't have 'blower speed', the motor will bog/flat spot at the hit of the throttle. With (what I feel is proper overdrive) you will actually need to 'fatten the idle up' so that the extra fuel at the hit of the throttle, allows the motor to 'flash the prop' and not 'blow it away'. Do you really NEED a wing? They are being used on capsule boats to 'hold the nose up thru the lights', but the only positive use I've found for them (used on open boats) is side to side "roll" prevention, using large "side curtains". I just don't feel those boats need a 'tail wing', so I'm not a good source for advice.

[RiverRacer]

Next best thing a wing does is put big lumps on your head!..:D

[raysoninoz]

Hi all. Firt up, appologies to flatmvn for the 'highjack' - see what happens when you let colonial convicts into your midst!!!

gfinishline, I haven't seen a k-boat with a big n ugly hat on let alone one on backwards. The BAD (Blown Alchohol Displacement) boats (circle boats) down here use the wing to push the rear of the boat & prop back into the water.
Do I need a wing? HELL NO! but they look so coool :cool: and the bling factor has got to be worth another few mph. hahahahha:p
Don't take this set up too seriously it's only going to be a river rod, probably make that a show pony (that has a bit of a kick in it).

RR, your comment on a wing giving you bumps on the head has me concerned. Remember 'safety first' if you're gonna play around in that area that has rotating parts, first put your helmet on...LOL
Cheers all:D

[RiverRacer]

Hi all. Firt up, appologies to flatmvn for the 'highjack'

I would never do that!..LOL..:D

I haven't seen a k-boat with a big n ugly hat on let alone one on backwards.

First time you get washed down in the first turn you'd be turning it around, on a lake deal you don't have that problem!..

http://www.v-driveboat.com/vweb/attachment.php?attachmentid=726&stc=1&d=1216132843

RR, your comment on a wing giving you bumps on the head has me concerned. Remember 'safety first' if you're gonna play around in that area that has rotating parts, first put your helmet on...LOL
Cheers all:D

A guy I knew once put one on his boat for the "cool" factor, it lasted one summer and it came off, every time you looked back there it was good for a bump and I had my share of them, just too many headaches!..LOL..:D

[raysoninoz]

I would never do that!..LOL.



First time you get washed down in the first turn you'd be turning it around, on a lake deal you don't have that problem!..

http://www.v-driveboat.com/vweb/attachment.php?attachmentid=726&stc=1&d=1216132843



A guy I knew once put one on his boat for the "cool" factor, it lasted one summer and it came off, every time you looked back there it was good for a bump and I had my share of them, just too many headaches!..LOL..:D

I've seen plenty of the hats like the one on K-13 (bird or buzzard) turned around but not a Big and Ugly!!!

RR I'm missing something here. How do you get bumps on the head from a wing when seated in the driver's seat? :confused::confused: OR have I misread your thread?

[RiverRacer]

I've seen plenty of the hats like the one on K-13 (bird or buzzard) turned around but not a Big and Ugly!!!

RR I'm missing something here. How do you get bumps on the head from a wing when seated in the driver's seat? :confused::confused: OR have I misread your thread?

No Big and Ugly on K boats, don't need them!...

Not in the seat, LOL, working on it wait till you pull the plugs, it's good for 2 bumps one from each side of the boat, LOL, or you just look down in there is good for one!..:D:D

[pwderman]

No Big and Ugly on K boats, don't need them!...

Not in the seat, LOL, working on it wait till you pull the plugs, it's good for 2 bumps one from each side of the boat, LOL, or you just look down in there is good for one!..:D:D

That way the bumps match Art....:rolleyes: one on each side LOL

[RiverRacer]

That way the bumps match Art....:rolleyes: one on each side LOL

That's about it, and one or two in the center for good measure too, LOL...:D

[shooter2]

Tell me do the bumps match header burns, ya know the one on the arm from reaching over the header, or going after a spark plug.

Brian

[RiverRacer]

Most definitely depending on how much of a hurry you are to get things done,LOL..

[shooter2]

Yes and we are always in a hurry to hurry up and wait.

[RiverRacer]

Yes and we are always in a hurry to hurry up and wait.

Well of course!.LOL..:D

[poncho]

Yes and we are always in a hurry to hurry up and wait.

Drivers meetings, LOL

[gfinishline]

"One more time SSLLOOWWLLYY". "If you open up the LARGE throttle plates of that injector quickly at low RPMs, "the music will stop!" I say this because you are running an 8-71, CORRECT? As I mentioned before, that blower will need to be spinning faster because it will not flow enough CFM (see reference, blower size/speed/CFMs) at low overdrive values. If that blower is not 'ready to make real positive boost' at the throttle hit, (18% or 20% over) the motor will bog/back fire/die.

[raysoninoz]

"One more time SSLLOOWWLLYY". "If you open up the LARGE throttle plates of that injector quickly at low RPMs, "the music will stop!" I say this because you are running an 8-71, CORRECT?* As I mentioned before, that blower will need to be spinning faster because it will not flow enough CFM (see reference, blower size/speed/CFMs) at low overdrive values. If that blower is not 'ready to make real positive boost' at the throttle hit, (18% or 20% over) the motor will bog/back fire/die.
I'm not sure who this was aimed at???
I got it the first time at normal speed!!! LOL