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-   -   engine choice? (https://classracer.com/classforum/showthread.php?t=66700)

Marlin Bogner 06-28-2017 07:01 PM
Re: engine choice?
 
That is what I do. I have a good customer that wanted it. I have already started on another. I will just get my 68 hemi cuda out for the next race. The reason I built the 68 318 stocker is there is very little maintenance,I new it would be fast after I got the piston with notches oked and I did not want a roll bar car. Racing in a t-shirt this summer was nice too.

David Lee 06-28-2017 07:30 PM
Re: engine choice?
 
Quote:
Originally Posted by Marlin Bogner (Post 538485)
That is what I do. I have a good customer that wanted it. I have already started on another. I will just get my 68 hemi cuda out for the next race. The reason I built the 68 318 stocker is there is very little maintenance,I new it would be fast after I got the piston with notches oked and I did not want a roll bar car. Racing in a t-shirt this summer was nice too.
Never mine, i found the answer to my question

Dave Noll 06-29-2017 09:33 PM
Re: engine choice?
 
Quote:
Originally Posted by Billy Nees (Post 538059)
Check out the Featured Flyer in last weeks Dragster!
Nice, somewhat vague, article. :rolleyes: Nice car.

Sam Capizzi Jr 07-06-2017 02:21 PM
Re: engine choice?
 
Totally missed this thread. Idk where to start but I will say that the flat top piston on the 318 (which is the only legal one as far as I know) is one of the limiting factors...I've reached the point where the only improvements on my car will come in the form of cubic dollars spent....also there is a single plane intake legal for the earlier year 318s that should be faster BUT the engine isn't making any horsepower over 6300 anyway so who knows.

Sam Capizzi Jr 07-06-2017 02:24 PM
Re: engine choice?
 
Quote:
Originally Posted by Marlin Bogner (Post 538485)
That is what I do. I have a good customer that wanted it. I have already started on another. I will just get my 68 hemi cuda out for the next race. The reason I built the 68 318 stocker is there is very little maintenance,I new it would be fast after I got the piston with notches oked and I did not want a roll bar car. Racing in a t-shirt this summer was nice too.
I have over 1000 passes on my motor and need to watch for dry rot on tires instead of check holes lmao. Pump gas is also nice for bracket racing

James L Miller 07-06-2017 06:27 PM
Re: engine choice?
 
Quote:
Originally Posted by Sam Capizzi Jr (Post 538908)
Totally missed this thread. Idk where to start but I will say that the flat top piston on the 318 (which is the only legal one as far as I know) is one of the limiting factors...I've reached the point where the only improvements on my car will come in the form of cubic dollars spent....also there is a single plane intake legal for the earlier year 318s that should be faster BUT the engine isn't making any horsepower over 6300 anyway so who knows.
Pat told me the new Diamond piston (80077) is also a flat top. Not sure why two Diamond flat top pistons are needed. I e-mailed Diamond but they haven't responded to my inquiry.

Sam, are you running the "high top" BBD 1-1/4" on your 318? Somewhere around 1973/4 they switched to the "high top" air horn casting but also switched to AFB jets which would be nice. The change was for emissions to seal around the accelerator pump better and pipe it off to the canister.

Sam Capizzi Jr 07-06-2017 06:40 PM
Re: engine choice?
 
Quote:
Originally Posted by James L Miller (Post 538925)
Pat told me the new Diamond piston (80077) is also a flat top. Not sure why two Diamond flat top pistons are needed. I e-mailed Diamond but they haven't responded to my inquiry.

Sam, are you running the "high top" BBD 1-1/4" on your 318? Somewhere around 1973/4 they switched to the "high top" air horn casting but also switched to AFB jets which would be nice. The change was for emissions to seal around the accelerator pump better and pipe it off to the canister.
I'm running the earlier vacuum version. I had to get creative and make a set of jets for mine. Haven't tried the later version

Sam Capizzi Jr 08-02-2017 02:36 PM
Re: engine choice?
 
Quote:
Originally Posted by James L Miller (Post 538477)
Pat Cvengros called me today and told me the new Diamond 318 piston, #80077, was a "True flat top" and "no valve notches" according to Pat. Not sure what happened, but that is disappointing.

I believe I originally brought up the roll bar issue since I was reluctant to put one in my 340 Barracuda. I guess it could always be cut out.

Interesting. So with all this talk about aftermarket heads and intakes on the mopars I decided to give this thread a new look. So what your saying is that it was approved, built and now it's no longer approved?? I do know that when I asked a few questions to pat about different year 318 intakes, i was told that they (68-71 and 73) are two different motors with different parts which is why they have different horsepower numbers. This was when all 318s were at 185 and the 69 was at 182.

Coleydog 08-02-2017 04:46 PM
Re: engine choice?
 
Quote:
Originally Posted by Sam Capizzi Jr (Post 540805)
Interesting. So with all this talk about aftermarket heads and intakes on the mopars I decided to give this thread a new look. So what your saying is that it was approved, built and now it's no longer approved?? I do know that when I asked a few questions to pat about different year 318 intakes, i was told that they (68-71 and 73) are two different motors with different parts which is why they have different horsepower numbers. This was when all 318s were at 185 and the 69 was at 182.
What rear, gear ratio are you running? Converter?

Sam Capizzi Jr 08-02-2017 05:46 PM
Re: engine choice?
 
Quote:
Originally Posted by Coleydog (Post 540823)
What rear, gear ratio are you running? Converter?
Turbo action and the cargoes thru traps at 6100 in bad air and closer to 6500 at maple grove


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