Author Topic: Dyno tests results of the new 351W Tunnel Wedge intake manifold !  (Read 604 times)

0 Members and 1 Guest are viewing this topic.

427LX

  • Sr. Member
  • ****
  • Posts: 280
    • View Profile
One of the guys did a dyno compare on his hot street 418W. Victor Jr. with 830 Holley vs. the Tunnel Wedge with a pair of Holley 465 carbs.  The Tunnel Wedge was bolted on
right out the box with no port matching or other work. 1 inch 4 hole spacers on the intake and heads were AFR 205 I believe.  Took some jetting changes to try and get the cylinder A/F as close as possible as O2 sensors for each header pipe. The Tunnel Wedge was ahead by 30 HP and 11 Torque at 6400 RPM !

pbf777

  • Hero Member
  • *****
  • Posts: 611
    • View Profile
Re: Dyno tests results of the new 351W Tunnel Wedge intake manifold !
« Reply #1 on: August 14, 2025, 10:40:56 AM »
    Just out of curiosity, do you know which example of the "Holley 830"?   ???

    Scott.

427LX

  • Sr. Member
  • ****
  • Posts: 280
    • View Profile
Re: Dyno tests results of the new 351W Tunnel Wedge intake manifold !
« Reply #2 on: August 14, 2025, 12:20:51 PM »
    Just out of curiosity, do you know which example of the "Holley 830"?   ???

    Scott.

No I don't. It was the dyno shop carb and I wasn't there during the runs. Does it make a difference?
« Last Edit: August 14, 2025, 02:06:47 PM by 427LX »

427LX

  • Sr. Member
  • ****
  • Posts: 280
    • View Profile
Re: Dyno tests results of the new 351W Tunnel Wedge intake manifold !
« Reply #3 on: August 14, 2025, 04:13:20 PM »
Well I was impressed with the results and that's all that matters! Was my idea to have it made.

frnkeore

  • Hero Member
  • *****
  • Posts: 1243
    • View Profile
Re: Dyno tests results of the new 351W Tunnel Wedge intake manifold !
« Reply #4 on: August 14, 2025, 04:30:22 PM »
I would say that, you did very well!

Especially for a as cast manifold.
Frank

'60 Ford Starliner
Austin Healey Replica with 427 & 8.5 Cert

JamesonRacing

  • Sr. Member
  • ****
  • Posts: 367
  • 1966 - What a great year for FOMOCO
    • View Profile
Re: Dyno tests results of the new 351W Tunnel Wedge intake manifold !
« Reply #5 on: August 15, 2025, 06:20:39 AM »
Impressive power gain!  And looks impressive as well.  Congrats!
1966 Fairlane GT, Silver Blue/Black 496/C4 (9.93@133)
1966 Fairlane GT, Nightmist Blue/Black 465/TKO (11.41@122)
1966 Fairlane GTA Conv, Antique Bronze/Black, 418EFI/C6
1966 F250 C/S, Rangoon Red, 445/T19
1965 Falcon Futura 4-door, Turquoise, EF! Z2363/4R70W