Manifolds

Southern_Hospitality · 03-07-2008, 02:21 PM

Gentlemen, I am looking to purchase a set of manifolds, but the owner does not know the correct engine size they will accomodate. A part number is stamped on each manifold. Will these numbers reveal the answer to my question? If so, can anyone decode?

380001LH and 398704RH

Redog · 03-07-2008, 02:30 PM

380001 1963-1970 LH; X-over. 350

398704 1966 RH; 330. Standard issue manifold.

Southern_Hospitality · 03-07-2008, 02:33 PM

X-over? What does this mean?

Olds64 · 03-08-2008, 05:48 AM

I believe he means that this manifold is a passenger's side crossover manifold. It has an opening on the bottom so the exhaust can crossover on the bottom from the driver's side. It also has an opening to the back so the exhaust can exit to the rear of the car.

Bunser · 05-15-2008, 03:59 PM

Those numbers sure look familiar.I bet you could find those on a 70 W31 350.

03-07-2008, 02:21 PM	#1 (permalink)
Southern_Hospitality Member Join Date: Nov 2007 Posts: 32	Manifolds Gentlemen, I am looking to purchase a set of manifolds, but the owner does not know the correct engine size they will accomodate. A part number is stamped on each manifold. Will these numbers reveal the answer to my question? If so, can anyone decode? 380001LH and 398704RH

03-07-2008, 02:30 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 679	380001 1963-1970 LH; X-over. 350 398704 1966 RH; 330. Standard issue manifold. __________________ Me 2000 Alero running 14's 1985 Delta 88 w/1968 350 rocket 2005 Nissan Altima (her's)

03-08-2008, 05:48 AM	#4 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,242	I believe he means that this manifold is a passenger's side crossover manifold. It has an opening on the bottom so the exhaust can crossover on the bottom from the driver's side. It also has an opening to the back so the exhaust can exit to the rear of the car. __________________ "Some men are Baptists, others Catholics. My father was an OLDSMOBILE man." Ralphie Billingsley A Christmas Story 1983 "We rei-eign, supreme, ooooh god! Burrito supreme, and a chicken supreme, and a CUTLASS SUPREME!" Tenacious D 2007

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03-07-2008, 02:33 PM	#3 (permalink)
Southern_Hospitality Member Join Date: Nov 2007 Posts: 32	X-over? What does this mean?

05-15-2008, 03:59 PM	#5 (permalink)
Bunser Junior Member Join Date: Feb 2008 Posts: 14	Those numbers sure look familiar.I bet you could find those on a 70 W31 350.