FE Power 8V Intake

[machoneman]

It's about 8", Bob.  How does that compare to the 351C manifolds you were talking about?

IIRC, it was nominally about 11", that being carb pad to runner exit. 'Course builders did add and subtract runner lengths back then at will to test various combos, literally week by week too. I'll see if I can dig out more details.

https://www.jegs.com/i/Weiand/925/1994WND/10002/-1

Jay, a stocker 351C tunnel ram Weiand is roughly 9" (see link) yet I guess a closer measurement would depend on checking the center line of the runner to the carb pad. No can do unless I had one around. Variations in custom tops is why I thought it was closer to 11".

[TomP]

That looks like a pretty nice design. It appears it may even fit under the hoods of some cars. I like your ideas.

[Joe-JDC]

I just measured my Cleveland tunnel ram, and Jay's adapter.  Separate outside length on the Cleveland is 8", and inside of port is 8 1/2", and with the adapter it is 10", and 10 1/2"s total(outside of port-inside of port).  It would be interesting to see a pair of the Survival CNC heads with Jay's adapter and Cleveland tunnel ram in comparison on the same shortblock.  Joe-JDC

[jayb]

Joe, I actually plan to dyno a couple different sets of heads here, along with my own, for comparison purposes.  One of the sets of heads is the Edelbrocks that you ported for me a while back, and that made 725 HP with the intake adapter and Cleveland tunnel ram on my dyno mule.  Also have a pair of CNC ported Blue Thunder MR heads to try out.  I can hardly wait to get going with this LOL!

[machoneman]

I just measured my Cleveland tunnel ram, and Jay's adapter.  Separate outside length on the Cleveland is 8", and inside of port is 8 1/2", and with the adapter it is 10", and 10 1/2"s total(outside of port-inside of port).  It would be interesting to see a pair of the Survival CNC heads with Jay's adapter and Cleveland tunnel ram in comparison on the same shortblock.  Joe-JDC

Thanks Joe and that's why I posted above about the 351C tunnel ram: the 'test' you mentioned would be great.

[cammerfe]

That cross-ram looks as if it'd be just the ticket to fit under the hood of a Cobra Daytona and provide for outboard mounting of a pair of hairdryers.

Where do the injectors go?

KS

The injectors are mounted horizontally, underneath the runners.  The injectors and vacuum taps are basically hidden.  I don't know if it will fit under the hood of a Cobra or Daytona Coupe, but based on my measurements it will fit under the flat hood of a Mustang or Torino or Fairlane, and probably a Galaxie too, although I haven't measured that...

What diameter butterflies fit in the cross-ram runners? Are the vacuum taps you refer to large enough to function as balance tubes? (My own experience of a set of side-draft DCOE Webers used a hole in the casting front to rear, about 1/4 inch diameter, that connected all four of the runners. It effectively balanced the otherwise individual air-flow and helped each cylinder to perform in parallel with the others in that bank. I don't suppose it was a perfect solution but Weber thought it to be necessary.) I'm doing some mental engineering and the answers to my questions will help me fill in some 'holes'.

KS

[jayb]

The butterflies are 2-3/8" in diameter.  The vacuum taps are 1/8" pipe, but could be enlarged somewhat because the boss is a little bigger.

[1968galaxie]

Cool cross ram individual throttle body set up!
I certainly enjoy reading the results of these dyno test sessions. Most informative - and fun for you as well.

[Cyclone03]

Jay I can volunteer my flat hood 68 Mustang to test fit your head and cross ram intake,just to make sure everything fits of course. I will then,of course, road test the set up for the next 8-10 years,50,000 miles or so should give a good long term durability test.
I know it would be hard work but I’m willing to help out where I can.

LanceH

[jayb]

Lance, it's hard to turn down such a selfless, generous offer   Fortunately, I have my own flat hood 68 Mustang to test fit the parts on.  So sorry LOL!

[Cyclone03]

Lance, it's hard to turn down such a selfless, generous offer   Fortunately, I have my own flat hood 68 Mustang to test fit the parts on.  So sorry LOL!

Just trying to help lighten your schedule a bit, besides I’m retiring next year,I’ll have some extra time.

Lance

[JERICOGTX]

Looking good Jay. Can’t wait for Dyno Day.