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The knowledge on this forum never ceases to amaze me. Thanks a lot for the clarification, all makes sense now!

Those PSengineering wheels really give an amazing look Earl 👌🏻

Meanwhile Vintage Engineering gave me details about his tooling for sale in case someone is interested, here is his reply:
-    The tooling is 4000$.
This tooling creates the sand molds that the magnesium pours into.
From there you need to machine the rough casting to finished dimensions
Machinery is not included. Depending on where you live. Finding a shop to machine is not difficult. Ray

Hi,

I have been trying to find an answer to my question. I am trying to find the exact dimensions of the original magnesium wheels on the 1965 gt350r. I found contradicting information on other forums and need clarification, especially on the backspacing:

American racing TTD: 15x7x3.75BS

PS engineering trans am: 15x7x4.25BS or 4.5BS
(read somewhere that 15x8 were maybe used on the rear for the 7.00-15 tires)

Vintage engineering: 15x7x3.75BS
(magnesium wheel replica)

Just got an email reply today from Ray Franklin of Vintage Engineering who used to make replica wheels, this is what he said:
– We did in magnesium. Out of stock. We no longer make these due to retirement and the tooling is for sale. Our wheels were modeled after an original wheel and has a 3.75" backspace.
Ray, Vintage Engineering

Wonder if anyone has the definitive answer.

Thank you, Shawn.

Thanks again for the information Randy!

Hi! I'm wondering what shelby did about the exhaust cross-over under the intake?
- Did he block the cross over ports inside the heads by filling and smoothing the exhaust ports?
- Blocked with plates on the intake gaskets?
- Did he leave them open like stock?
- And why?

Other forums on the internet seem 50/50 split on the exhaust cross-over dilemma. Some say an engine NEEDS heat to atomize the air/fuel mixture. But i feel that is non-sense. I have never seen an ATV, motorcycle or any recreational motorsport vehicule using some kind of heated intake beside some rare models of snowmobiles having coolant heated carburetors (for obvious snow and temperature reasons)

I watched an episode of engine masters where they found out lowering fuel temperature in the carb bowls increases output. i imagine keeping the intake cooler by blocking the cross-over  would limit that effect and reduce the chance of fuel boiling if you get caught in a stop and go situation during summer.

What are your thoughts and experiences?
Thank you!

Any input is greatly appreciated... while we are talking about heads, what did shelby do about the exhaust cross-over under the intake? Did he leave them alone? Did he block the cross over ports inside the heads? And why? Other forums on the internet seem 50/50 split on the exhaust cross-over dilemma

This is why i come to SAAC forum Randy! Good to know the blocks get blocked there as well. I have contacted Larry at Valley head service, maybe they didn't weld them in 1965, but he said he can do the welding on the banana water ports.

I did not know that! Totally makes sense now. My previous car, 1969 mustang 351w 4v, forced me into a complete rebuild because of head gasket failing in the steam hole. If i can eliminate that possibility on my next project, i would be better off!

Oh, that is good to hear! Thank you so much for your input 

Ok! That makes sense... Would it cause overheating issues from airpockets that could get trapped?
Or filling the coolant with the car at an angle to make sure air wasn't left in the system is something they would do to prevent that? Some people who installed aftermarket aluminum  heads without matching the steam holes to their blocks don't have overheating problems... and using a quick compression calculator the GT350Rs seemed to have a compression ratio of around 10.77:1 to 11:1 which doesn't seem too high comparing with engines today. I guess from what you said, the water port welding was done to enhance gasket reliability during races, in other words, probably not worth a thing for a street driven car

Hi, I'm thinking about getting a set of 289 heads built by valley head service like they used to do in 1965 for the first cars. I found Out shelby had the steam holes welded in the heads. Why did he do this?! With all the talk about matching the steam holes with aftermarket aluminum heads to your block or it could potentially cause overheating issues, i don't understand why shelby would do this on his race cars. Enlightenen me please!
Thank you!

Bob gaines, i already sent them an email. i will have to call them, not sure if they sell parts...

Hi,

- I just found out you can purchase the OVC peter brock redesigned front valance from NPD p/n:17A939-1PBA
- Now I'm wondering: Can we get the OVC peter brock redesigned rear plexiglass without the hump?

Thanks for answering, super helpful forum, gold mines of information!

I emailed Ryan Falconer and he replied "sorry i do not remember".

In other words:
- What do you think is the camshaft in Ken Miles' prototype GT350R mustang?

https://www.mecum.com/lots/SC0520-414695/1965-shelby-gt350r-prototype/

https://youtu.be/xNI22OocHLE

Indoor:
https://youtu.be/4r7qwFeDLMc

C3OZ K-code cam to compare:
https://youtu.be/PyrTi1pUz_E

(ignore the straight pipe sound and it seems similar when comparing the indoor and c30z videos, but i might be crazy)

Randy you are right. I noticed the lift is lower on the S1CR-6250-D at .445" vs the .478" on the C30Z-6250-C. It seems a  document i found talking about the S1CR cam has a paragraph about a description based on "a customer" upgrading his "base trim" 289, and suggesting that customer to upgrade to the cobra hi-rise manifold (S1MK-9423-A) and 715cfm carb (S1MK-9510-A).

Could it be, that shelby had a batch of "Engle cams .445"" ready to install just before the advent of the K-code cars (planed from years of knowledge and experience racing the 289 cobras and such), and when they got the the K-code engine, they didn't use the Engle cams because the K-code camshaft and piston combination ended up being a better design than anticipated, allowing more lift? And they sold the S1CR over the counter to customers as "performance upgrades"