Which sparkplugs for SBC Dart Pro 1 Platinum heads???'s

[dickeymoore]

I have a set of SBC Dart Pro1 platinum heads(part#11311112P) and would like to know what kind of sparkplugs and part numbers will work in thiese heads,I think the Autolites AR3933 will work but I'm looking for maybe AC Delco or Champion plugs with .750" reach and gasketed seat.THANKS

 

[Malibuwagon80]

Re: Which spaerkplugs for Dar heads???'s

If you have the paperwork that comes with the heads it lists recommended plugs on it. If not check Darts website?

 

[lilbowtie]

Re: Which spaerkplugs for Dar heads???'s

Ditto Wagon - If you want a certain brand use a cross reference chart.

art Platinum 200 SBC 23° Aluminum Cylinder Head
Part# 11310000P thru 11420000P
Material: 355-T61 Aluminum
Comb Chambers: 64cc & 72cc
Intake Valve Dia: 2.02”
Intake Port volume: 200cc
Intake Port Dim: 1.195”w x 2.095”h
Int Port Location: Stock
Intake Gasket: Fel-Pro# 1205 Mr. Gasket 106
Exh Valve Dia.: 1.600”
Exh Port volume: 75cc
Exhaust Port Dim: 1.410”w x 1.350”t
Exh Port Location: Stock location & bolt pattern
Exhaust Gasket: Fel-Pro# 1404 Mr. Gasket 150c or Ultra Seal 5900
Flow, Intake: 264cfm @ .500” lift / 28”
Flow, Exhaust: 180cfm @ .600” lift / 28”
Head Bolts: Stock bolts can be used. We recommend ARP# 134-3601
Head Studs: ARP# 134-4001 or 234-4301 (12pt)
Manifold: Dart dual plane 42811000 or Dart single plane 42411000 with 4150 carb
Milling: Min. 58cc = .060” (.0065” = 1cc) Flat Mill
Angle mill .125” safely / .200” = 49cc 1.5° (carefully)
Pistons: Most 23°aftermarket pistons.
Push Rod length: Stock thru +.100” Should always measure (Stock length = 7.800”)
Push rod Guide Plate: Dart guide plate 27001110
Retainers: Steel (10°) / 1.250” ( 7°)
Spark Plug: Angle or straight, .750” reach, gasketed, Autolite AR3933
Spring Pockets: 1.550” OD (.030” deeper max)
Springs: Our Assembly: 1.250S = 110# @ 1.700” / .520” max Comp 981
1.437D = 130# @ 1.800” / .620” max Comp 987
1.550D = 195# @ 1.900” / .690” max Comp 954
Valve Length: Std 4.935” w/ 1.250 & 1.437 / 5.035” (+.100) w/ 1.550
Valve Stem Dia: .3415” - 11/32”
Valve Train: Std SBC 3/8” or 7/16” stud mount
Valve Guides: 1/2” OD Int = Mag-bronze Exh = Mag-bronze (.002” press)
Valve Guide length: 2.100”
Valve Guide clearance: .0014” - .002” (with our .3415 dia. valve stem)
Valve Guide Spacing: 1.890” exhaust moved .030” from intake
Valve Seats: Powder metal, .006” press
Valve Seat dim. Int - 2.160”x 1.810” x .350” Exh - 1.650”x 1.350”x .350”
Valve Seat angles: Int = 32° - 45° - 60° - 70°-80° Exh = 37° - 45° - radius
Stud Girdle: Retains standard SBC stud location. Recommended Dart PN # 64110002
Torque: Head Bolts = 70 ft/lb
Rocker Studs = 45 ft/lb
Manifold = 35 ft/lb
Block Use: Any SBC Iron or Aluminum

 

[bowtie81]

Re: Which spaerkplugs for Dar heads???'s

I run an AC Delco fr1ls, fit perfect into the dart pro 1's

 

[dickeymoore]

Re: Which spaerkplugs for Dar heads???'s

Will the Champion RC12YC plugs work in the DartPro 1 heads?

 

[LS6 Tommy]

Re: Which spaerkplugs for Dar heads???'s

Do you have a particular affinity for Champion plugs? I've never had them run well in anything other than landscape equipment... Mopars seem to work OK with them. At least stock ones. I'd go with the ones Dart suggests...

Tommy

 

[dickeymoore]

Re: Which spaerkplugs for Dar heads???'s

The Champion plugs run good in all my other SBC engines,2 engines with Edelbrock heads and 1 with Vortec heads.

 

[dickeymoore]

Re: Which spaerkplugs for Dar heads???'s

The Champion plugs run good in all my other SBC engines,2 engines with Edelbrock heads and 1 with Vortec heads.

 

[LS6 Tommy]

Re: Which spaerkplugs for Dar heads???'s

The Champion plugs run good in all my other SBC engines,2 engines with Edelbrock heads and 1 with Vortec heads.

If they're working for you then I certainly won't tell you to stop using them.

Tommy

 

[dickeymoore]

So will they Champion RC12YC plugs work in the Dart Pro 1 heads and is .750" reach the same as 3/4" reach?THANKS