Barracuda Challenger Forum

Author Topic: '67 Coronet R/T 512 Stroker Mustang Dyno Results  (Read 10935 times)

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36608
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #15 on: October 15, 2009 - 01:40:08 pm »
I was going to post a picture of this beast but i am not sure I even have one  :banghead:

Challenger - You`ll wish You Hadn`t




Offline jordan

  • Full Member
  • ***
  • Posts: 601
  • no replacement for displacement
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #16 on: December 12, 2010 - 02:17:55 am »
Hey Chryco,

     I want to do this engine build soon.  According to 440 source I have a "super block". The only thing I want to change is going to the stealth heads.  My question is about what compression ratio to use because of the difference between aluminum and iron heads, and does changing the compression ratio alter the cam choice?  And I want to uses roller lifters.  Every thing else in your build is what I have in mind to work towards.   Is that much power really streatable?  Will I be able to get my car to hook up with all that torque?  Or would a little less output make for a better rounded street car?  Thanks for any info and opinion you are willing to give up.    J
"Don't brake until you see God!"

Offline brads70

  • C-C.com Expert
  • ********
  • Posts: 18742
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #17 on: December 12, 2010 - 08:11:20 am »
Sounds like a Monster! Nice job Neil! Looking forward to some pictures and maybe a video? :ylsuper:
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0


Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36608
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #18 on: December 12, 2010 - 01:11:39 pm »
Hey Jordan
Typically the alum heads will absorb a lot more heat so the usual # is 1 point higher compression , this engine is on the ragged edge at 10.6 :1 compression & 3600 feet of altitude .
So I would recommend building it around 11.25:1 with Alum heads , a flat top piston with a closed chamber is far better for power , this brings in the problem with most alum heads that the chambers are too big to get the compression you want , this is why I liked the Bulldog heads as they were 76cc & were fully lower lower in chamber size to create exactly the extra point of compression  to compensate for the heat loss .
 The cam choice is not affected by Alum heads & I will help you carefully design a cam to match the power band you want , the 512 build here is totally streetable , idles well in traffic , no stalling & rough idle problems with the cam in that engine , it is also designed with a slightly lower powerband so it will run on the highway at 2200 rpm , you can run higher if you are not using OD to drop rpm on the highway .
 The big limitation I see is the Stealth heads are relatively small & will limit power above 5500 RPM , I would rather use the Indy EZ Max wedge ports & possibly the big Indy dual plane intake to fit under hood & use at least the Proform 950 race carb with this combo , possibly the bigger 1050 if you want more power at higher RPM If you have the $$ to allow for the upgrade  .

Challenger - You`ll wish You Hadn`t

Offline CUDA8U

  • Jr. Member
  • **
  • Posts: 144
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #19 on: August 28, 2016 - 01:58:30 am »
 my 512 was built by a moparts member,it has eddy alum rpm heads,1.6 440 source alum roller tip rockers,ch-28 intake with dual eddy 600 carbs,hughes hyd cam numb HEH3237BL MID RANGE CAM. This thing is a tire shredder :cheers: :canada: There is a lot of power to be had yet with a couple changes

Offline CUDA8U

  • Jr. Member
  • **
  • Posts: 144
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #20 on: August 28, 2016 - 02:15:51 am »
  I  think Neil should advertise a price for this 512 build,I'm sure that a lot of members would gladly send him some business

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36608
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #21 on: August 28, 2016 - 11:06:54 am »
And ship it from Panama ?

Challenger - You`ll wish You Hadn`t

Offline 1 Wild R/T

  • Resident
  • *****
  • Posts: 4068
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #22 on: August 28, 2016 - 11:36:08 am »
And ship it from Panama ?

It's not like you couldn't drop it off at the canal.... :bigsmile:
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36608
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #23 on: August 28, 2016 - 03:18:56 pm »
It's not like you couldn't drop it off at the canal.... :bigsmile:
Easily done there are a lot of companies shipping empty containers back to the US but it is going to add to the cost a wee bit & MY Machinist is in Canada

Challenger - You`ll wish You Hadn`t

Offline CUDA8U

  • Jr. Member
  • **
  • Posts: 144
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #24 on: August 28, 2016 - 10:05:37 pm »
sure or better yet we build it here & I deliver it & install / tune it

This is the post I was refering to when I said to mention  the cost to build a 512....I assumed you did this quite often?Maybe you weren't in Pan then?
« Last Edit: August 28, 2016 - 10:07:36 pm by CUDA8U »


Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36608
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: '67 Coronet R/T 512 Stroker Mustang Dyno Results
« Reply #26 on: August 29, 2016 - 01:01:23 am »
This is the post I was refering to when I said to mention  the cost to build a 512....I assumed you did this quite often?Maybe you weren't in Pan then?

Yeah we built approx 12 for my customers , My machinist has probably built more than 30 now for his customers once I put him on to how leathal the package is , some are in race cars with far more serious heads & cams making far more power & living for years

Challenger - You`ll wish You Hadn`t