« previous next »
Pages: [1]

Author Topic: 428 CJ with TFS heads and Borla 8 stack  (Read 1726 times)

0 Members and 1 Guest are viewing this topic.

andyf

  • Full Member
  • ***
  • Posts: 150
    • View Profile
428 CJ with TFS heads and Borla 8 stack
« on: November 10, 2024, 01:27:55 AM »
Just finished up a 428CJ street engine. Has a 4.250 crank in it so it is a 463. Used TFS heads and the customer wanted a Borla 8 stack setup with EFI. Has a Holley Terminator X ECU. Engine is very mild since the car is a street driver with overdrive. Small hyd roller cam. Made 550 hp on the dyno and 620 torque. Engine has a very pronounced torque curve, most likely due to the stacks. Expensive engine to build with the Borla setup.
Logged

My427stang

  • Hero Member
  • *****
  • Posts: 4201
    • View Profile
Re: 428 CJ with TFS heads and Borla 8 stack
« Reply #1 on: November 10, 2024, 06:55:13 AM »
Very nice!
Logged
---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

andyf

  • Full Member
  • ***
  • Posts: 150
    • View Profile
Re: 428 CJ with TFS heads and Borla 8 stack
« Reply #2 on: November 10, 2024, 12:23:10 PM »
Here is a picture of the power curves from the dyno console. The torque curve has a big peak in it which probably is due to stack length tuning. The engine had very high VE at this point an wanted a lot more fuel than the normal Holley program provides. I ended up adding 50% extra fuel in this area from what the default program provided.
Logged
Pages: [1]
« previous next »