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273 cam #1411040 03/29/13 10:50 PM 03/29/13 10:50 PM
Joined: Feb 2009 Posts: 23 Ontario. Canada hemidere OP member
hemidere OP member Joined: Feb 2009 Posts: 23 Ontario. Canada	My chum has a 66 Barracuda with a 273. He wants to swap the factory solid cam for a mild hydraulic. Any issues?

Re: 273 cam [Re: hemidere] #1411041 03/29/13 10:54 PM 03/29/13 10:54 PM
Joined: Jun 2005 Posts: 5,102 Western Md. skicker "The Champ"
skicker "The Champ" Joined: Jun 2005 Posts: 5,102 Western Md.	273's were all solid lifter motors. If he wants to do a small hydraulic swap he will need push rods and a set of hydraulic rockers from a 318. I used a 284-484 Mopar Performance cam in one and it ran pretty good. ...FAFO...

Re: 273 cam [Re: hemidere] #1411042 03/29/13 11:10 PM 03/29/13 11:10 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	May I ask what issue is he haveing with the solid cam? live every 24 hour block of time like it's your last day on earth

Re: 273 cam [Re: RapidRobert] #1411043 03/29/13 11:37 PM 03/29/13 11:37 PM
Joined: Feb 2009 Posts: 23 Ontario. Canada hemidere OP member
hemidere OP member Joined: Feb 2009 Posts: 23 Ontario. Canada	No issue, he wants a little more performance.

Re: 273 cam [Re: skicker] #1411044 03/30/13 12:11 AM 03/30/13 12:11 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	Quote: 273's were all solid lifter motors. If he wants to do a small hydraulic swap he will need push rods and a set of hydraulic rockers from a 318. I used a 284-484 Mopar Performance cam in one and it ran pretty good. Not the 68 and 69 273s, they were all hydraulic. You can run the adjustable rockers, but the stock pushrods won't be the correct length. The easy thing to do is swap to the non-adjustable rockers and corresponding pushrods.

Re: 273 cam [Re: hemidere] #1411045 03/30/13 12:11 AM 03/30/13 12:11 AM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	If performance is the objective, a solid will generally be better. The solid can get the valves open a little faster and farther for any given duration. That means more performance with less trade-off in drivability and economy. How about a bigger solid with matching spings?

Re: 273 cam [Re: ahy] #1411046 03/30/13 12:25 AM 03/30/13 12:25 AM
Joined: Feb 2009 Posts: 23 Ontario. Canada hemidere OP member
hemidere OP member Joined: Feb 2009 Posts: 23 Ontario. Canada	He has a NOS 340 hyd cam a parts guy found while doing a clean out at one of the local Dodge dealers, left over from the 70's. If he can swap with the solid is what we need to know...

Re: 273 cam [Re: hemidere] #1411047 03/30/13 12:38 AM 03/30/13 12:38 AM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	As said need rockers/pushrods. I have some extras you can have for the shipping (I think I have 16 pushrods) & shafts too. That way you can keep the solid rocker/shaft assys together to keep or sell live every 24 hour block of time like it's your last day on earth

Re: 273 cam [Re: hemidere] #1411048 03/30/13 07:35 AM 03/30/13 07:35 AM
Joined: Dec 2003 Posts: 22,696 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,696 Bitopia	Dropping in a 318 would be easier. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: 273 cam [Re: jcc] #1411049 03/30/13 10:01 AM 03/30/13 10:01 AM
Joined: Jan 2003 Posts: 3,920 n.e. pa. 6 65rbdodge master
65rbdodge master 6 Joined: Jan 2003 Posts: 3,920 n.e. pa.	Quote: Dropping in a 318 would be easier. a motor swap is easier than a cam swap?

Re: 273 cam [Re: 65rbdodge] #1411050 03/30/13 10:12 AM 03/30/13 10:12 AM
Joined: Sep 2006 Posts: 1,139 West Tennessee R rbstroker super stock
rbstroker super stock R Joined: Sep 2006 Posts: 1,139 West Tennessee	You're going to have to change pushrods, but you can keep the cast adjustable rocker arms. Smith Brothers can fix you up with pushrods or you can get them ready-made from Summit or Jeg's. This is the land of the free because of the brave

Re: 273 cam [Re: 65rbdodge] #1411051 03/30/13 10:13 AM 03/30/13 10:13 AM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: Quote: Dropping in a 318 would be easier. a motor swap is easier than a cam swap? It is if it isn't you doing it. To the OP, all you really need to swap in a hydraulic cam is the cam, the hydraulic lifters and a set of new push rods for hydraulic cam to adjustable rockers. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: 273 cam [Re: Supercuda] #1411052 03/30/13 10:37 AM 03/30/13 10:37 AM
A Anonymous Unregistered
Anonymous Unregistered A	The stock 273 cam is super mild, even the 4-barrel cam only had 248 degrees duration. If it's an otherwise stock 273, the factory 340 cam is plenty big and will be a big improvement in performance. You friend can either swap in 318/340/360 pushrods and non-adjustable rocker arms, or keep his adjustable rockers and just buy some pushrods ready-made for a hydraulic cam and adjustable rockers (which would be my choice). Other than the pushrod issue, putting a hydraulic cam in an early 273 is no more or less complicated than changing cams in anything else.

Re: 273 cam [Re: hemidere] #1411053 03/30/13 02:56 PM 03/30/13 02:56 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Mancini brand for hydralic cams and adjustable rockers http://chucker54.stores.yahoo.net/enhypusech.html comp cams ones that should work http://www.summitracing.com/parts/cca-7821-16/overview/

Re: 273 cam [Re: 65rbdodge] #1411054 03/30/13 04:14 PM 03/30/13 04:14 PM
Joined: Dec 2003 Posts: 22,696 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,696 Bitopia	Quote: Quote: Dropping in a 318 would be easier. a motor swap is easier than a cam swap? Well based on the replies so far, 45 cubes is hard to overcome with a simple cam swap. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: 273 cam [Re: RapidRobert] #1411055 03/30/13 07:46 PM 03/30/13 07:46 PM
Joined: Feb 2009 Posts: 23 Ontario. Canada hemidere OP member
hemidere OP member Joined: Feb 2009 Posts: 23 Ontario. Canada	Thanks Rapid Robert, I'll see him tonight and advise...Ian

Re: 273 cam [Re: hemidere] #1411056 03/30/13 09:32 PM 03/30/13 09:32 PM
Joined: Mar 2008 Posts: 685 Bismarck, ND USA C cageman mopar
cageman mopar C Joined: Mar 2008 Posts: 685 Bismarck, ND USA	I'll put my 273 up against any 318. No way I would ever put a 318 in.

Re: 273 cam [Re: jcc] #1411057 03/31/13 01:17 AM 03/31/13 01:17 AM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	Quote: Quote: Quote: Dropping in a 318 would be easier. a motor swap is easier than a cam swap? Well based on the replies so far, 45 cubes is hard to overcome with a simple cam swap. I used a 273 hipo solid cam with .500 lift,that thing rocked. I have used the 273 hipo solid in a few 318s,all 273 valve gear. if you are going hydro cam/lifters stick a 318 whiplash cam in it.

Re: 273 cam [Re: scratchnfotraction] #1411058 03/31/13 01:34 AM 03/31/13 01:34 AM
Joined: Feb 2009 Posts: 23 Ontario. Canada hemidere OP member
hemidere OP member Joined: Feb 2009 Posts: 23 Ontario. Canada	Thanks all, met with Darcey tonight. He's goin with the 340 hyd cam, 273 rockers & new pushrods. Should motivate the little Cuda nicely...

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