71 Dart Swinger 318 Green Go Restoration

[GreenGo Danno]

I have a new project. 71 Dart Swinger with a 318, ps, and factory A/C. Has not run since 1989. Tearing engine down 1st. Only 85k and unmolested. What is the largest cam I can run with factory heads and springs that will give me most bang for the buck. Going to keep pistons stock and factory 2 barrel intake with a 500 cfm Holley Street Avenger 2 barrel. I will also be adding headers with dual exhaust.

 

[65dartcharger]

I have a new project. 71 Dart Swinger with a 318, ps, and factory A/C. Has not run since 1989. Tearing engine down 1st. Only 85k and unmolested. What is the largest cam I can run with factory heads and springs that will give me most bang for the buck. Going to keep pistons stock and factory 2 barrel intake with a 500 cfm Holley Street Avenger 2 barrel. I will also be adding headers with dual exhaust.

We need pictures!

 

[RustyRatRod]

I have a new project. 71 Dart Swinger with a 318, ps, and factory A/C. Has not run since 1989. Tearing engine down 1st. Only 85k and unmolested. What is the largest cam I can run with factory heads and springs that will give me most bang for the buck. Going to keep pistons stock and factory 2 barrel intake with a 500 cfm Holley Street Avenger 2 barrel. I will also be adding headers with dual exhaust.

The stock cam that's in it. Anything different requires matching springs.

 

[jrc4y4]

This is the cam we put in my 318 when we rebuilt it in high school. I was told this was the biggest cam you could run without putting a stall in it. If I had known I’d blow the tranny up a week later I would have gone bigger . It’s been a good cam and has done well with the mild rebuild as well as when I eventually put closed chamber heads with bigger valves in it. I suspect it would be fine for yours but like Rusty rat rod said you gotta have matching springs.

 

[GreenGo Danno]

Here are some pics. Seems they are not coming thru. Maybe I have to pay the forum a special fee to upload.????

 

[GreenGo Danno]

Test

 

[jrc4y4]

No you don’t have to pay to upload pics. Maybe just a current system issue. I run into same problem on another forum

 

[bkd]

Nope your aloud just need to find the paper clip, might be harder on a phone

 

[GreenGo Danno]

So got the 318 torn down but had many, many overheats. Hole clear thru cyl 1 and 5. Rest of them bluing in the same locations. Decided sleeving was not going to be cost effective. Found a Dec 71 block that was to be rebuilt but builder had issues with that one and without telling me, rebuilt and sent me a July 74 long block. I immediately called them out and they are trying to find a late 70 or any year 71 to build and swap the 74 out. My question is, are there any differences in 70/71 to 74 blocks. Not sure if I should keep this one if they can't find a replacement. Thoughts?

 

[GreenGo Danno]

Cylinder hole picture and new engine (1974) picture. Also rebuilt the front suspension while waiting for engine. I still cannot get pictures to load?

 

[jrc4y4]

The block itself I believe is the same. Internals would be different as the compression dropped in 1972. Not sure other differences. Sorry you’re still having issues with pics.