Gettin' back into it..

[Paul Precht]

The 915 intake port is identical to the 906 which is a good thing. This port flows much better in stock form than the 516. The 915 intake port also responds very well to porting, the 516 does not which would be important if you were to build a SS motor.

[borninamopar]

Thanks Paul..Yea, I read that that somewhere. If the 915's with the small exhaust valve is "legal" I have more than a few pair of them. Now too run the car as a 440 model or a 330 model: And I know, some will say that they have never seen a 330 64 hdtp, but I saw one for sale not long ago. I admit it was the first 330 hardtop I ever saw, but it was one. So, wouldn't it technically be a lighter shipping weight?

[GTX JOHN]

The Smith Family(Pro Trans Builder) run a Dakota R/T usually in I/SA and it a solid 1.0 under combo in good Air with FI 360. All my 67 915 heads look the same on exhaust port to my elderly naked eyes (looked again today). The 66 heads do look worse to me but all I can find around here are still 516 # like the 64 - 65 heads. I believe that a lot of the 915 67 Heads I have were cast in later part of 1966. I took delivery of our 67 GTX in early Nov. and I believe the build date was Aug. of 1966 so I would think the Julian Date on Heads was probably July or June of 1966 although I am not a restoration expert by any means.

Since you can move around the weight in the car to bottom of class or up and down a class the exact shipping weights are not important like they were in old days. Good Luck

[treessavoy]

Another avenue you might look at is the 426 Street wedge. It's virtually the same but with more cubes and it's been devalued from 365hp to 300.

JimR

[treessavoy]

Originally Posted by borninamopar

Hey Dick.. After researching it a little more..I am considering building my 98 Dakota R/T or one of my other cars. I didn't realize I would be running against the new DP and Mustwangs..bad choice. I have a couple of other cars I can work with too.
I have wondered how my 65 Valiant 2 dr sedan would do with the 273 in it. I want to get back on the track, but I want to be able to go rounds.

I am considering building my '64 Valiant sedan with a 273 two barrel, it seems to fit in P/SA and some of the guys have had success with this engine in B body's inj lower classes.

JimR

[GTX JOHN]

Just my opinion Jim......... but the four barrel 273 looks a lot better to me. I believe the engine is at 220 and can run Edelbrock Alum. Intake. The Wongs and Bushmakers both run the combo and are FAST. The old Mopar Race Manuels aways suggest not running a 2 Bl. in a class that can run 4 BL. My boys 318 Wagon in P/SA can run Small or Large Thermoquads (up to 800 CFM) and a very efficient intake allowing it to Spin 7000 RPM comfortable. Every time we have tried a 2 Bl. it just doesn't want to run much over 5,500. There is a racer in Vegas building a GT car with 273 2 Bl. and I am watching to see how he does.
Also be aware that the Casting # on 915 only needs to be correct.....No matter when it was cast on Julian date IE: head can be cast a different year than car it is on if casting # is right!

Just my .02 for what is is worth .. .......John Irving

[borninamopar]

Originally Posted by treessavoy

Another avenue you might look at is the 426 Street wedge. It's virtually the same but with more cubes and it's been devalued from 365hp to 300.

JimR

Yea, I saw a 65 Coronet runnin' somewhere: Red car, black hdtp, he was running a 426 SW. Never heard how he does. Thanks. There weren't many 64 Dodge with a street wedge. Yea, about the Valiant with the 273...My 2 dr sedan is fast, bone stock..They don't weight much and are super sturdy little cars. I always knew I could make one run fast.

[GTX JOHN]

Sound Like John Winslow's 65 Dodge SS/JA out of Northern California.

[Chris Barnes]

Why not run a Max Wedge or a Hemi? Seriously, the carb on a street wedge is a bottle neck and the heads are on the mediocre side. Maybe the low horsepower factor would mitigate these shortcomings.

We did some testing on the flow bench and found that the 516s flowed equal or slightly better than the 915s. Remember you only get .424" lift so ginormous numbers aren't that important.

I've got enough problems without jumping into the Super Stock side of the pool but none the less I am intrigued by the GT classes. What about building a '77/'78 440? It comes with good heads and a huge carb...

Good luck. Run the '64--the world needs more ugly old Mopars!

Chris Barnes
Wagons of Steel
'64 Plymouth Savoy Max Wedge Wagon
Stock 6621

[borninamopar]

Originally Posted by Chris Barnes

Why not run a Max Wedge or a Hemi? Seriously, the carb on a street wedge is a bottle neck and the heads are on the mediocre side. Maybe the low horsepower factor would mitigate these shortcomings.

We did some testing on the flow bench and found that the 516s flowed equal or slightly better than the 915s. Remember you only get .424" lift so ginormous numbers aren't that important.

I've got enough problems without jumping into the Super Stock side of the pool but none the less I am intrigued by the GT classes. What about building a '77/'78 440? It comes with good heads and a huge carb...

Good luck. Run the '64--the world needs more ugly old Mopars!

Chris Barnes
Wagons of Steel
'64 Plymouth Savoy Max Wedge Wagon
Stock 6621

Hey Chris, I am considering all the possibilities. The GT class is interesting, and I have a few of the late 440 motors layin' around. One is a motorhome motor with a huge 1000cfm thermobog that was runnin' like a mule when I tore it out of the house on wheels. Yea, I love the old ugly mopars, I have a few sittin' around, I have an even uglier 63 sedan.
Maybe, I'll just start buildin' them all. I can run the 64, my wife can run the 98 Dak R/T, and my daughter can run the ugly little Valiant. 'Preciate all the help everyone is giving...I am tending to lean to the Mopar guys..I just don't trust those Ford and Chevy guys.