Re: [AMC-list] Edelbrock Head rebate

["Rocky Lear" <lear31@xxxxxxxxxxxxxx>]

I thought the Indy setup had to use the Indy intake too....is that right? If 
you are using a stock style intake, can you use indy heads?
----- Original Message ----- 
From: "Nick ALFANO" <71amx@xxxxxxxxxxxxx>
To: "amc list" <amc-list@xxxxxxxxxxxx>
Sent: Thursday, March 25, 2010 10:38 PM
Subject: [AMC-list] Edelbrock Head rebate


Hi Armand,

The RPM head fully assembled is right around $800 each.

As for flow, my tests have all shown the Indy heads to out flow the 
Edelbrock heads by quite a bit when it comes to total cfm. Talking in flow 
is really subjective to the rest of the engine build like cam, compression, 
intake and so on. The Edelbrock heads have a nice port design and flow 
better than the cast iron head. With porting, the included valves can get 
into the 280 range max and can only handle up to a .580 lift cam. Changing 
the intake valve to a larger more efficient valve can net around 300 with 
proper porting. The Indy heads on the other hand out of the box outflow the 
Edelbrock heads which needs some porting to get the same numbers the Indy 
heads flow without porting. With port work to the Indy heads, we have gotten 
the SR head into the 340 cfm range on the intake and as high as 260 cfm on 
the exhaust. There are pros and cons for both including the differences from 
our factory cast iron head. First, look at the
aluminum heads verses the cast iron. Both have a weight advantage over the 
cast iron heads in the range of 30 lbs less for each head taking about 60-65 
lbs off of the front end. The aluminum also allows you to run more 
compression on lower grade fuel than the cast iron will. The design of the 
runners are also a factor. The same heat factor that makes the iron head a 
con for higher compression is also a pro when it comes to making hp power. 
Because the cast iron head retains and creates more heat in the combustion 
chamber, you will make a little more hp with the iron if every thing else is 
exactly the same. The hp difference can be made up in power gained by 
compression/cylinder pressure with the aluminum heads.

All in all, each of them have their place when matched with the correct 
other components.

Nick

Alfano Performance
4849-76 st.
Kenosha, WI. 53142
262-308-1302
262-942-8271 after 6pm central and weekends


Message: 4
Date: Mon, 22 Mar 2010 13:14:11 -0600
From: "Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>
To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxx>
Subject: Re: [AMC-list] Edelbrock Head rebate
Message-ID: <004801cac9f3$dadf8cc0$04fea8c0@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Nick,
What are the edelbrock heads selling at these days?
I heard one fella saying that the edelbrock heads are flowing better than
the Indy heads?? Do you agree? Does anyone agree with that??
Armand
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