225 1 bbl go to guy
 

I just picked up a 1974 Duster with a rebuilt /6. Looked at the guide and its 105/135, since 2005. Didn't think this was a viable combo. Anyone run one? How far under the W/ did it go?

Re: 225 1 bbl go to guy
 

Well, smaller bore/longer stroke than my 230/140 chebby. Bigger cam, slightly smaller carb but it's a Holley. Less mechanical compression but (arguably)a better head.
I've gone pretty darned fast with my 230/140 and that's with a Powerglide.
I think that a Super Six is better.

Re: 225 1 bbl go to guy
 

I just checked and the 2 bbl get 9 HP more. Not a bad deal for some better weather consistency.Its hard to find reasonable priced low rust Mopars.

Re: 225 1 bbl go to guy
 

It can run the index but it's a horrible combo.

Re: 225 1 bbl go to guy
 

Didn't someone in D5 run a Super Six recently and with success?

Re: 225 1 bbl go to guy
 

i don't know what it takes to change a 74 into a 73 but I would run it as a 73 318 @ 169 HP or see what it would take to get the 74 318 to 169!

Re: 225 1 bbl go to guy
 

i just went to "old faithful" classracer.com and the 73/74 318 specs are EXACTLY the same. It SHOULD be as easy as a phone call to Pat C. to get the 74 to 169.
I repeat, SHOULD!

Re: 225 1 bbl go to guy
 

Shoulda, coulda, woulda, now that's a challenge. So looking at the same specs, there are (2) 318-2 HP ratings, 150 and 170. Looked at the internal specs and there is no difference that I can find, Typo? Same carb,cam compression....?

Re: 225 1 bbl go to guy
 

I purchased Mike Jeffery's '80 Dodge Diplomat Super 6 powered V/SA 2 years ago. He had gone a second under with the car and held the record several times.

My best was has been -.97 under. The car is a consistent -.70/-.80 under. The car is NHRA rated at 144 HP.

Because of extenuating circumstances, I was unable able to make any divisional or national open races in 2018. Hopefully, that will change this year.

Thanks

#5458

Curt Rees

Re: 225 1 bbl go to guy
 

Phillip knows......He raced one for year. The 2 Brl. is MUCH better combo.

I think he set Nat'l record with 80 Aspen Wagon 225/2 Brl
that used to live at my shop some years ago.

Re: 225 1 bbl go to guy
 

Mike Jeffrey held the record 2 different times with the car Curtis has. IIRC, he went 1.27 under. It was not fast when he started. He and Phillip wrote letters and got some HP taken off. Over the years Mike got hit twice, but it would still go 1.05 under. Last time I helped him at Tri-State he still had the "Denver" setup in it and went 1.001 under on the first pass.

He always told me the 1bbl combo was a turd. I wanted to try it because I had a Duster. No 2bbl on any Duster.

Your only hope with it is to build it, get it as fast as possible, then state your case and hope Uncle Wally will take some HP away.

Re: 225 1 bbl go to guy
 

About 2bb in Dusters, awhile back in an old scrap yard I came upon a 75-6 Duster with the super six (2bb) didn't look like anything had ever been changed from stock.
Mike

Re: 225 1 bbl go to guy
 

I bought a feather duster years ago that had the original aluminum intake with what I thought was a 2bbl. I still have it somewhere lol.

Am I remembering correctly they had a 2bbl?

Re: 225 1 bbl go to guy
 

According to my old faithful Motors Manual, the Super 6 didn't start production until 1977. I thought they started sooner.

Re: 225 1 bbl go to guy
 

Billy: You are correct as usual!

Re: 225 1 bbl go to guy
 

Out of curiosity, I checked classracerinfo.com and it show a Holley 1 bbl with a 1.686" throttle bore and 1.286" venturi. Rated at 135hp, "U" is it's natural class.

I bet I know where the hood went! :) I like the Dart Lite parts.

Re: 225 1 bbl go to guy
 

No 2bbl on A bodies at all. It is a very popular swap though, and SS setups complete are bringing good money today.

Feather Dusters and Dart Lites had an aluminum 1 bbl intake. I've had a few. I could not even give one away.