period correct tunnel rams

[Hemicolt]

Can someone post information on dated tunnel rams? For instance what might have been used in the late 60's, early to mid 70's, etc.

[Verne_Frantz]

Edelbrock TR-2X purchased new in '69 or '70. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]




Maybe it was '71..........can't remember..... [img]<<GRAEMLIN_URL>>/rolleyes.gif[/img]

[whitetop]

Cool Picture. Edelbrock made one before that -plenum was one giant square box.

Offenhauser and Weiand also made TR's in 1970-1973 era.

Most came out in the early 1970's.

[YENKO DEUCE REGISTRY]

&quot;Bread Box&quot; version?

I learned this term from my own TR request thread:

https://www.yenko.net/ubbthreads/ubbt...413&amp;page=1

I'm looking for a vintage TR1 or a TR2.

[PxTx]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Verne_Frantz</div><div class="ubbcode-body">Edelbrock TR-2X purchased new in '69 or '70. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]




Maybe it was '71..........can't remember..... [img]<<GRAEMLIN_URL>>/rolleyes.gif[/img] </div></div>

This is a cool intake. Only one I am aware of that has different port sizes per runner- see pic.

Here are two decent threads talking about vintage Tunnel Ram

http://www.stevesnovasite.com/forums...d.php?t=171643

https://www.yenko.net/ubbthreads/ubbt...2&amp;page=all

[whitetop]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: YENKO DEUCE REGISTRY</div><div class="ubbcode-body">&quot;Bread Box&quot; version?


I'm looking for a vintage TR1 or a TR2. </div></div>

Marlin, Those bread box TR1's were absolutely horrendous on the street and it takes someone with experience to set one up right and even then it won't run as good as a TR with a smaller plenum. Even Edelbrock pitched it after one year of production and went to the TR-2X and discontinued the TR1. It was a poor design to begin with.

A friend of mine put one on his 70's style street rod he was building and it washed down his cylinder walls after a summer of driving and he and his friend who set it up have been setting up these systems since the mid 70's. He wanted a challenge..and it beat him.

I would suggest the Edelbrock TR-2X, or better yet the Weiand or an Offenhauser-both have a smaller plenum than the TR-2X and are very early 1970's correct. Offenhauser had a very good reputation for nice running street TR's back in the 70's because they had the best plenum shape.

Here is the engine in my 289 Mustang- Offenhauser with 2 Holley 390's-the pre emission carbs w/o all the smog junk on them.Disregard the date on the photo-it was not set the day I photographed it.

[YENKO DEUCE REGISTRY]

Ok, I like the 'Bread Box' look - but have heard about the washing down of the cylinder walls. I don't want to deal with that as it would certainly take all the fun out of this whole endeavor!

What are your thoughts on this one?

Offy Turbo Thrust

[Hemicolt]

Your engine looks great.
Does anyone know the time frame on the two pictured?

Don't worry about Stunkards picture of the Camaro. He won't mind.

[whitetop]

Marlin it is period correct. All the Offenhauser TR's were available in 1970 and they never changed the design nor the lettering etc.
You can still buy them brand new from Offenhauser through Summit.

Most people who built these back in the day like Offenhauser best on the street-it was the right combination of plenums shape and size.

Couple hints-don't run a radical cam with a TR on the street. You need a cam that produces the most vacuum as possible to suck down that fuel air mixture. I have an R/V/performance style cam in my car from comp cams who helped me build the engine on paper.

Run the heaviest flywheel you can find and the highest gear ratio for torque at low rpm's and street cruising.

Run an electric fuel pump to at least start the car to prime the fuel bowls upon startup. I'm going to run a vintage Holley along with a mechanical pump and once it starts shut ff the electric pump.

[whitetop]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Chandler</div><div class="ubbcode-body">Your engine looks great.
Does anyone know the time frame on the two pictured?

Don't worry about Stunkards picture of the Camaro. He won't mind.

</div></div>

1974 ish...