359w blown headgasket

holset35 · June 22nd, 2011, 09:25 PM

359w gt40p heads X303 cam. Just got my car done and was just ideling in the garage with some reving firtst time running.Car running great then saw water underneath the car it was coming out the passenger side exhaust and out the head.Changed the oil it was milky.What would make it blow the soon I used a felpro stock style head gasket.Iam a little puzzled right now.

fogged306 · June 22nd, 2011, 10:49 PM

Head warped? Was the block deck checked?

91cobra5.0 · June 22nd, 2011, 11:23 PM

Originally Posted by fogged306

Head warped? Was the block deck checked?

+1

do you know any history about those heads? pervious owner could have over heated them pretty bad

MustangMatt96GT · June 23rd, 2011, 03:03 AM

gasket upside down?

holset35 · June 23rd, 2011, 06:48 AM

Had the heads checked at the machine shop.Deck dont know and gasket up side down is that even possible.

fogged306 · June 23rd, 2011, 08:08 AM

You can have the gasket backwards. There's two passages on the back of the block on both sides. If you have the gasket backwards, it will block them.

69fastback · June 23rd, 2011, 09:39 AM

Originally Posted by holset35

Had the heads checked at the machine shop.Deck dont know and gasket up side down is that even possible.

If you're asking this question, it's the first place I'd look.

holset35 · June 23rd, 2011, 05:43 PM

just pulled the head and it blew between 2 cylinders um my water jacket holes are a lot bigger than the gasket water jacket holes

holset35 · June 24th, 2011, 09:42 PM

The headgasket was on back words.My ? is my head and block both ahve water jacket holes on each side front and back.My new gasket a 3 layer metal gasket from mr.gasket only has water jacket holes on the back side of the gasket.

June 22nd, 2011, 09:25 PM	#1
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	359w blown headgasket 359w gt40p heads X303 cam. Just got my car done and was just ideling in the garage with some reving firtst time running.Car running great then saw water underneath the car it was coming out the passenger side exhaust and out the head.Changed the oil it was milky.What would make it blow the soon I used a felpro stock style head gasket.Iam a little puzzled right now. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

June 23rd, 2011, 03:03 AM	#4
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,689 iTrader: 3 reviews	gasket upside down? __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

June 23rd, 2011, 06:48 AM	#5
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	Had the heads checked at the machine shop.Deck dont know and gasket up side down is that even possible. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

June 23rd, 2011, 05:43 PM	#8
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	just pulled the head and it blew between 2 cylinders um my water jacket holes are a lot bigger than the gasket water jacket holes __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

June 24th, 2011, 09:42 PM	#9
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	The headgasket was on back words.My ? is my head and block both ahve water jacket holes on each side front and back.My new gasket a 3 layer metal gasket from mr.gasket only has water jacket holes on the back side of the gasket. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

June 22nd, 2011, 10:49 PM	#2
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Head warped? Was the block deck checked?

June 23rd, 2011, 08:08 AM	#6
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	You can have the gasket backwards. There's two passages on the back of the block on both sides. If you have the gasket backwards, it will block them.

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