Results 1 to 1 of 1

Thread: 556-200BK, MSD 6A coil info needed.

  1. #1

    Default 556-200BK, MSD 6A coil info needed.

    Ordering the MSD and Holley dual sync distributor today. Two questions. Engine is a 385 SBC, 226°/232° @ .050", .575"/.575" lift 110° LSA cam. It has about 58° of overlap. 10.45:1 static compression. Dynamic compression is right around 8.2:1. Tight quench 0.041", good AFR 195 Street Eliminator heads. Long tube headers. Cam should have enough vacuum for power brakes. 93 octane fuel. I do not mind paying a little more for a hotter coil, prefer it be black, plain looking to match my black/brushed aluminum theme under the hood.

    1) What is a good coil to use? I see the HVC2 mentioned, is a $250 dollar coil really needed, or is GM HEI external coil hot enough to do the job?

    2) I have the 550-406, it should not need any additional wiring connectors to do this install correct?

    The distributor should be plug & play to the Terminator, and then just the MSD wires to the exposed yellow, black, and other wire like the manual shows?
    If I need any adapters I'd like to order at same time. Just being thorough, rather than skim through 20 pages to find a schematic, was hoping one of you had done this.
    Last edited by Bill C; 05-20-2020 at 04:01 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us