The Stovebolt Site Forums The Shop Area Engine Shop Tattersfield "Chevy Dual" Info?

Anybody know much about the Tattersfield Dual Chevy intakes? I just picked one up that was told would fit a 235. First thing I did when I got home was set a 2BC on top...didn't fit. So I grabbed a 216 carb, and it slipped right on. For the hell of it, I set it against an Edelbrock 2x1 235 intake, and it matched identically. Sort of confused now...

R.F.,

Congratulations on your manifold. I don't think that any Tattersfield produced any intakes for the 235. I think this was mainly due to the fact that they went out of business before Chevy introduced the 235. Consequently, like you found out, your 235 carbs will not fit the Tattersfield without modification. You can either use a pair of 216 carbs, modify the 235 carb bases to fit or fill the stud holes on the manifold and redrill and tap new holes that fit the 235 bases.

In addition, the intake ports on the 235 head are larger than the ports on the 216 Tattersfield intake. The ports on the Tattersfield can be machined to fit the ports on a 235 head or you can buy adapter rings. I believe that Buffalo Enterprises make such rings.

Secondly, the Tattersfield will not bolt up to a stock 235 exhaust manifold without modification. This is because the mounting holes do not line up. The holes on the intake can be elongated to fit the 235 exhaust manifold.The manifold problem dosen't really matter if you are installing headers.

Since it won't fit a 235 without modification, maybe you would consider giving it to another bolter? Maybe someone like me?

Congratulatiuons again on your find.

Jon

Wow, way more info than I had anticipated...thanks! The one thing I'm still unsure of is the intake port size variance...or lack thereof. Like I mentioned, the Tattersfield matched right up to the Edelbrock ports (and I know the Edelbrock is a 235 version). I mic'd both and got the same size (don't have that exact number handy). However, I did not bother to compare exhaust manifold patterns, but will tonight. If used, I plan on running 216 carbs (hence my post in the Wanted section), or restoring my ancient Carters and making a nice wall sconce!

The good news is that a pair of Carter 483s or 574s W-1's will bolt right up.

Jon.

The port spacing is the same from the 216 to the 235, but the diameter is different. 216 ports are 1.437 (1-7/16") and 235 ports are 1.531 (1-17/32"). The Tattersfield will have the smaller 216 ports that can be bored to the 235 size as has been mentioned.

....the Tattersfield is one of the best looking dual intakes they made also!!!

There wouldn't be a picture of this manifold available, would there?

Hey R.F.,

What kind of Carters were you considering restoring for the Tattersfield? As CarbKing mentioned Carter W-1s will bolt right on and are probably the best choice due to their manual power valves. I am running a pair of Carter YF 2100s on the Edelbrock on my 261 and am happy with the results. The part # for a Carter YF designed for a 216 is 964.

Whatever carbs you choose just make that they are an exact match by part #.

Good luck with your project and please post some photos when you are done.

Jon

When it comes to Carters, I'm in the dark. Well, not so much anymore after the above recommendations. I may end up with 2 NOS Rochester auto-chokes on it, otherwise I'll go the W-1 route as mentioned.

But, since I pretty much matched the Tattersfield to the Edelbrock, now I'm wondering if the Edelbrock is a 216 model? Only thing is, the carbs on the Edelbrock are 235 pattern. The exhaust manifold patterns are the same on each. Is there a "remote" chance the Tattersfield actually is a 235 version with early carb flanges?

I'll get some photos tonight to post.

Maybe someone already opened up the ports once upon a time to fit a 235?

Possibly, but then wouldn't the exhaust manifold bolt patterns still differ? There doesn't seem to be any modifications on the Tattersfield.

Back when I didn't know better (yesterday ), I took a 235 full oiler intake/exhaust with caburetor and did a direct swap on a babbit pounding 216. It ran fine, but it did have its "quirky" moments and it sure wasn't a race car. It was months later that I was told "you can't do that". I guess my point is, if you want maximum reliability you should match your parts with "your parts". I hope this makes sense.

Does your Edelbrock have any sort of markings on it? Usually a 235 Edelbrock will have "PG" cast into the center runner.

Another difference that I have noticed between 216 and 235 Edelbrock intakes is that 216 Edelbrocks have an additional vacuum port located on the rear runner. Below is a link a picture of the 235 intake on my truck.

http://www.stovebolt.com/gallery/arnett_jon_1950.htm

Sorry for the blurry picture. I doubt you can see "PG" I was talking about. Nonetheless, you can see that the vacuum port is in the same location as a stock intake. A 216 Edelbrock has a second port located on the rear runner. Below is a link to a 216 Edelbrock showing the additional port on the runner nearest the firewall.

http://img233.imageshack.us/my.php?image=blurry0yb.png

I think this was the intake you were interested in purchasing from someone from this forum. If you did buy it and this is the intake you are comparing the Tattersfield to, I believe we may have found the answer. Both of your intakes were originally designed for a 216 and it sounds like both of them had their ports machined to fit a 235 head.

P.S. I am not sure that "runner" is the actual name for the three tubes that mate up to the ports on the head. I wasn't sure how else to describe them. I hope I am not adding to the confusion.

Jon

here is one pix of
tsattersfield manifold

here is another link to their site
link

Jon, again you provided the wealth of info. And yes, that's the intake I have. As you can see in the photo, it's mounted on a 235. So, I'm now assuming that both intakes have been modified. However, the carbs on the Edelbrock are 235 Rochesters, though I haven't removed them to see whether or not the flange has been modified.

Well, it's nice to somewhat have gotten to the bottom of this. Sort of ironic ending up with 2 modified 216 intakes, but I'm still a happy camper!

R.F.,

Glad to help and congratulations on having two pieces of cool speed equipment.

Jon

I have two carter w-1 574S carbs that I want to put on my tattersfield. Would anyone who has this setup mind telling me what modifications/issues they had with getting them working? Were the 235 stock?