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spark plugs for 4.8. will these work?

Discussion in 'GM Powertrain' started by 07silverado07, Mar 25, 2010.

  1. 07silverado07

    07silverado07 Rockstar 100 Posts

    will these spark plugs work/fit in my 2007 classic silverado with the 4.8 in it? please help
  2. 07silverado07

    07silverado07 Rockstar 100 Posts

    i forgot to put the part number sorry ACF-41-985 they are ACDelco
  3. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    Yes they will work.....:great:...The Vortec Engines run Best with the A/C Delco Plugs,IMO
    Last edited: Mar 25, 2010
  4. 07silverado07

    07silverado07 Rockstar 100 Posts

    thank you. been having trouble finding anyhtinf for my truck since its a half year model. ive been told everything off the 06 will interchange just wanted to make sure
  5. 07silverado07

    07silverado07 Rockstar 100 Posts

    got another crazy question whats the difference in the coils? on summit it shows two sets of plug wires, each for a different set of coils.... im lost lol
  6. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    One side note on the plugs,is that the part number#,has changed on the plugs,from 41-985 to 41-110,They are the same plug,G.M. changed the part.number.....Just wanted to let you know.....:glasses:
  7. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    What wires are you looking at.....Factory....if so the only difference in the A/C Delco Wires is the Length,one set is 9.2 long and the 2nd is 10.5.and they are both 7.00mm
    http://www.summitracing.com/search/...gine-Size/4-8L-294/?keyword=Spark Plug Wires
    Last edited: Mar 25, 2010
  8. lawson4450

    lawson4450 Rockstar 100 Posts

    There are two different types of coils though I bought a set and turns out i have the other set lol. the difference is where the wire runs out of the coil pack.
  9. 07silverado07

    07silverado07 Rockstar 100 Posts

    yes thats the wires i was looking at. since every chevy dealorship close to me has closed up, i guess ill have to order them online. glad i found this forum yall guys are the best of help! :great::great::great:
  10. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    Just pull one of the Plugs Wires off your Engine and Measure it,then you'll know which length of plug wires to order....:glasses:

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