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Author
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Topic: edelbrock rpm heads on 289 components advice
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nash
Journeyman Posts: 96
From: Nashville, TN, USA
Registered: Nov 2000
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posted 07-04-2001 12:49 AM
   
What is a good combination of rocker arms for this set up. Roller rockers, steel or aluminum or roller tip rockers? Will I need new valve covers and what length hardened pushrods (stock?)? I am trying to keep this on a budget after spending plenty on the heads.
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kcode
Gearhead Posts: 2983
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 07-04-2001 10:36 PM
Since you spent the money on the heads, don't cut back on the rest of the components.
If you are using a flat tappet cam, the standard length push rods will work, just make sure they are hardened, if not the guide plates will chew them up on no time.For rocker arms, go with neddle bearing rollers, Crane, Harland Sharp, Comp or even Ford Motorsport. Just make sure you get the right stud size 3/8 or 7/16. If you use rockers with Polylocks, it is advisable to use tall valve covers, Ford Motorsport or Racing all Aluminum looks good. The Shelby club is having their annual show 7/21 at Moss Wright Park in Goodlettsville. Could be a source for parts. Mike
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richard bohm
Gearhead Posts: 373
From: tucson,az-luray,va
Registered: May 2001
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posted 07-05-2001 02:38 AM
excellent advice kcode. i couldnt agree more.
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nash
Journeyman Posts: 96
From: Nashville, TN, USA
Registered: Nov 2000
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posted 07-05-2001 08:41 AM
Thanks, any advice on the ratios 1.6 or 1.7?
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74merc
Gearhead Posts: 865
From: Demopolis AL
Registered: Jun 99
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posted 07-05-2001 04:59 PM
I'd choose my rocker ratio depending on the cam.
Personally, I'd go with 1.6s and get a good cam...
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nash
Journeyman Posts: 96
From: Nashville, TN, USA
Registered: Nov 2000
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posted 07-05-2001 06:05 PM
The cam I have is the ford motorsports cam that is one step above stock. I am wanting to make some power but maintain streetability. The car is not a daily driver but also not a race car.
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JAAZZY
Gearhead Posts: 772
From: Bay Area, CA
Registered: Apr 2001
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posted 07-06-2001 12:04 PM
I'd get the lift from the cam and get the 1.6 rockers. Buy good quality roller rockers. Don't buy any cheap no name brand. I have heard horror stories about bad geometry. I run the Comp 1.6 rollers with TFS heads. No complaints.------------------
65 Stang - TFS SH Stage III Heads, Nash 5 speed, Fuel Injection, etc...
2001 - Z06
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nash
Journeyman Posts: 96
From: Nashville, TN, USA
Registered: Nov 2000
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posted 07-07-2001 08:32 AM
Thanks for the advice, I think I will go with the 1.6 ratio. On the ford motorsport valve covers that I have seen in magazine adds there is no oil cap on top, do you have to put one in yourself? Other than hardened pushrods and gaskets, what else will I need?
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JAAZZY
Gearhead Posts: 772
From: Bay Area, CA
Registered: Apr 2001
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posted 07-07-2001 10:42 AM
You will need some type of crankcase ventilation but I'm not familiar with the ones you are referring to. Most I have seen have a location for a breather or pcv. quote:
Originally posted by nash:
Thanks for the advice, I think I will go with the 1.6 ratio. On the ford motorsport valve covers that I have seen in magazine adds there is no oil cap on top, do you have to put one in yourself? Other than hardened pushrods and gaskets, what else will I need?
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kcode
Gearhead Posts: 2983
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 07-07-2001 11:19 PM
Nash
The Aluminum Motorsport valve covers have "knockouts", you actually have to cut them out, not everyone will use the same type of pcv system. So you cut out the way you want it.Mike
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