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Discussion Starter · #1 ·
I'm thinking of finally taking the plunge and getting some better heads.I'm looking at the Edelbrock Rpm heads.I'm thinking of sticking with the 1.90/1.60 heads so they can be used with stock type pistons...I've read that the 2.02 intake valved head only flows marginally better anyway with the same port size...What does everyone think of these heads?.I know there are better flowing heads out there but I'm thinking stay with a big company that will be around forever for ease of getting parts and stuff down the road.....I was wondering if later on down the road I want to improve these heads do they respond well to porting or are they pretty much maxed as is?
 

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i went from ported 69 351w heads to rpm heads a couple of years ago and it was like night and day,really woke my engine up.i cant help you with the porting as mine were straight out of the box.there are better heads out there but for the money,and going from a stock head they made a big improvement
 

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I offer this strictly as my opinion. You are right on several things. Go no bigger than 1.94/1.60. Anything bigger and you will have to have the pistons "fly-cut". This will weaken the pistons and sooner or later one of them will pop the top. Stick to name brands. There are a lot of cheap knock offs that look good but I certainly wouldn't trust them on my motor! Edelbrock, AFR, Brodix, Ford Racing GT40X, Dart and World Casting are all good choices and offer good heads with 1.94/1.60 valves. AFR 165cc heads would be my first pick but them are kind of high and I don't know what you can spend. But the Edelbrocks are my close second pick. And any head, stock or after market will benefit from porting and polishing. And you can always install them as is and port them later on if you want.

Good Luck!
 

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i went with the 2.02 intake valve and did have to change the pistons,from memory the lift on my intake valve is about .519 and with the stock dished pistons the 2.02 valve hit the side of the dish big-time.
i would go with the smaller intake valve if you want to use the stock pistons for sure.
 

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I bought 2 sets. One is a 2.02 valve, the other is 1.90. Both are excellent heads. The 1.90 heads....replaced some ported DO0E 351w heads...picked up a full second and 11 mph, IIRC. Night and day? Oh yeah....putting it lightly!

Yeah, there might be better heads out there..but for just bolt-on-and-go heads, you're probably not going to find anything "better" for the money. TFS heads...supposedly you don't have to flycut pistons, but EVERY person I've ever known that bought a set had to cut them for proper clearance. It was either that or go to a thicker head gasket, which kind of defeats the purpose of putting good heads on in the first place. AFR=$$$$. Good stuff, but pricey. Brodix ain't bad either, but they need to be ported to work good. Out of the box, Brodix heads suck. Might as well have factory cast iron heads.
 

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With that cam....you will have to fly cut a stock piston with ANY 2.02 head. I would check P/V with that cam and ANY head you decide on. Are you sure on the lift of that 292H mag cam? The 289 firing order version is .538 and the 351W firing order version is .518.

_________________
Tim

81 Mustang 351W/AOD 12.13 111.7
budget 87 octane street and highway driver





<font size=-1>[ This Message was edited by: qtrhors on 5/9/06 6:06am ]</font>
 

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I really like my gt40x's on my 302. they have 1.94 and 1.54 vavles so they whould have good clearence. They are a little mor pricey though.
 

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ALWAYS check piston to valve clearance!!! It is far more likely that a 1.90 intake will clear over a 2.02. Does NOT mean it will. Always check. Build two motors with the exact same parts and one can have different p/v clearance than the other.

I think you'll be happy witht the edelbrock heads. Mavman has had some amazing results!!!
 

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I had clearnce problems with a 1.60 exhaust valve with a stock replacement trw 5.0 piston.
What ever head you get consider a custom cam for the best overall performance.......
 

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Discussion Starter · #11 ·
I ended up with a set of 2.02/1.60 heads.I'm pretty sure I'll have to get new pistons as my flat tops have very small eyebrows.
 

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I'm just about to start my new motor with Edelbrock 2.02's, bought full assembled. My pistons are Speed Pro with the valve notches. The motor is Jasper stage 2 short block. Last night we removed the inner valve springs to lessen the pressure on the cam during first run in. There was some metal shavings and stuff on the springs, so be sure to clean them before you run them. I also noticed that the valves were not sealing to well, letting air escape but this will go away as the valves seat themselves. I will post again with more photos. SHU
 

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Discussion Starter · #13 ·
Shu do you know the part# of the pistons and what compression ratio they are with the 60cc chambers?

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1968 mustang 306,stock ported heads,650 Holley DP,weiand Xcellerator intake, Comp cams Magnum 292,[email protected] and 518L,heddman headers,4speed with a 4.11 detroit locker.13.69 at 101 mph.

<font size=-1>[ This Message was edited by: frdnut on 5/12/06 8:24pm ]</font>
 
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