Engine/heads?

ZASX · 12-27-2006, 07:27 PM

Need Help Figuring Out What Engine Ive Got Its Marked3955582the Heads Are Marked Cfd,409,147,112,113 Thanks If Anyone Can Help

Redog · 12-27-2006, 08:59 PM

The 2 being the last number means it's a 1972 motor and 395558 is the casting on the Olds 350 motors from 1968 to 1972.

The heads will have a large number by the #1 plug wire. That is what heads it has

ZASX · 12-28-2006, 07:06 AM

The Number On The Heads Are #7 Are These Any Good? Thanks Again

Redog · 12-28-2006, 07:18 AM

5, 6, and 7 heads from that year are all pretty good.

There are mixed reviews thought, some will say 5 are the best, others will say the 7. 6 are the rare ones

texasred · 12-28-2006, 03:01 PM

5 is supposedly the best flowing stock heads. 7s are the first year that "should" have hardened valve seats for unleaded fuel. I've got ported 7s and they do quite nicely.

C.J.

ZASX · 12-28-2006, 04:42 PM

Thanks Everyone For The Info On The Engine&heads,where Is A Good Place Too Order Parts?1972/442 Thanks Again

texasred · 12-28-2006, 05:04 PM

What kind of parts?

Most everyone is good...except for Mondello and a couple of "Brothers". (I can't say the name of the "Brothers" company because they have taken legal action against some folks who got screwed by them and then had the audacity to complain about it on Oldsmobile boards.)

Just say away from Mondello and the "Brothers" (whose company I can't publically name).

C.J.

redoldsman · 12-29-2006, 10:36 AM

Depending on what you are looking for, you should be fine with the 7 heads. The 7 heads are from a 71 and 7a's are from a 72. The 7a's definitely have hardened seats but I am not sure about the 7's. Both heads have small combustion chambers which is what you want. The 72 used dished pistons to lower the compression to 8.5. The use of flat top pistons will raise the compression which will be offset in part by the thicker head gaskets available today. Hope this helps.

12-27-2006, 07:27 PM	#1 (permalink)
ZASX Member Join Date: Dec 2006 Posts: 45	Engine/heads? Need Help Figuring Out What Engine Ive Got Its Marked3955582the Heads Are Marked Cfd,409,147,112,113 Thanks If Anyone Can Help

12-27-2006, 08:59 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 697	The 2 being the last number means it's a 1972 motor and 395558 is the casting on the Olds 350 motors from 1968 to 1972. The heads will have a large number by the #1 plug wire. That is what heads it has __________________ Me 2000 Alero running 14's 1985 Delta 88 w/1968 350 rocket 2005 Nissan Altima (her's)

12-28-2006, 07:06 AM	#3 (permalink)
ZASX Member Join Date: Dec 2006 Posts: 45	Heads The Number On The Heads Are #7 Are These Any Good? Thanks Again

12-28-2006, 07:18 AM	#4 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 697	5, 6, and 7 heads from that year are all pretty good. There are mixed reviews thought, some will say 5 are the best, others will say the 7. 6 are the rare ones __________________ Me 2000 Alero running 14's 1985 Delta 88 w/1968 350 rocket 2005 Nissan Altima (her's)

12-28-2006, 03:01 PM	#5 (permalink)
texasred Super Moderator Join Date: Apr 2004 Location: San Antonio, Texas Posts: 806	5 is supposedly the best flowing stock heads. 7s are the first year that "should" have hardened valve seats for unleaded fuel. I've got ported 7s and they do quite nicely. C.J. __________________ Home of the 1971 Cutlass Supreme convertible Super Karate Monkey Death Car.

12-28-2006, 04:42 PM	#6 (permalink)
ZASX Member Join Date: Dec 2006 Posts: 45	Parts Thanks Everyone For The Info On The Engine&heads,where Is A Good Place Too Order Parts?1972/442 Thanks Again

12-28-2006, 05:04 PM	#7 (permalink)
texasred Super Moderator Join Date: Apr 2004 Location: San Antonio, Texas Posts: 806	What kind of parts? Most everyone is good...except for Mondello and a couple of "Brothers". (I can't say the name of the "Brothers" company because they have taken legal action against some folks who got screwed by them and then had the audacity to complain about it on Oldsmobile boards.) Just say away from Mondello and the "Brothers" (whose company I can't publically name). C.J. __________________ Home of the 1971 Cutlass Supreme convertible Super Karate Monkey Death Car.

12-29-2006, 10:36 AM	#8 (permalink)
redoldsman Proud Viet Nam Veteran Join Date: Dec 2006 Location: Rowlett, TX Posts: 93	Depending on what you are looking for, you should be fine with the 7 heads. The 7 heads are from a 71 and 7a's are from a 72. The 7a's definitely have hardened seats but I am not sure about the 7's. Both heads have small combustion chambers which is what you want. The 72 used dished pistons to lower the compression to 8.5. The use of flat top pistons will raise the compression which will be offset in part by the thicker head gaskets available today. Hope this helps.

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