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Author Topic: what size Holley jet to use as a oil restricter  (Read 2686 times)

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jholmes217

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what size Holley jet to use as a oil restricter
« on: February 01, 2015, 02:46:22 PM »
What size Holley jet should I use for oil restriction in iron 428 Cobra Jet heads using a flat tappet hydraulic cam?  I am using Precision Oil Pumps roller tip rockers and stands with the stock oil return tins.
« Last Edit: February 01, 2015, 03:06:28 PM by jholmes217 »
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Jeff
1969 Mach 1 Q code 428 Cobra Jet
4 speed, 3:50 traction lock
Olympia WA. area

jayb

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Re: what size Holley jet to use as a oil restricter
« Reply #1 on: February 01, 2015, 03:34:08 PM »
I use #70 jets for that, but I know that some people use up to #90.
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Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

jholmes217

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Re: what size Holley jet to use as a oil restricter
« Reply #2 on: February 02, 2015, 12:01:14 AM »
Thanks Jay.  I see now where it says that in your book when you were describing the dyno mules.
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Jeff
1969 Mach 1 Q code 428 Cobra Jet
4 speed, 3:50 traction lock
Olympia WA. area
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