Best 1991 502Mag Refresh
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Best 1991 502Mag Refresh
Can some one please give me input. I have twin stock 1991 502 mag 410HP w/b1 drives 1.36. The engines are low hours so I am going to do the top ends only. Does any one have a suggestion for Carb, Manifold, Cam, Heads, Exhaust package. The best bang for the buck is what I'm looking for.
Thanks!
Thanks!
#3
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Re: Best 1991 502Mag Refresh
Building HP500 clones is a good suggestion.
But what are your goals?
What is your budget?
Exhaust $1500 and up - I like Stainless Marine.
New Heads $1500 and up - Edelbrock large ovals are good for a low $$ option.
Intake - Edelbrock Airgap or Dart
Cam - If you go roller, Crane 731
Carb - Holley 800 like on the HP500s
If you are pulling the engines to make a cam change, I'd do rings, bearings, and an oil pump too...
But what are your goals?
What is your budget?
Exhaust $1500 and up - I like Stainless Marine.
New Heads $1500 and up - Edelbrock large ovals are good for a low $$ option.
Intake - Edelbrock Airgap or Dart
Cam - If you go roller, Crane 731
Carb - Holley 800 like on the HP500s
If you are pulling the engines to make a cam change, I'd do rings, bearings, and an oil pump too...
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Patrick
Patrick
#5
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Re: Best 1991 502Mag Refresh
If the head castings are good, they could be rebuilt with the good stuff for about 2/3 the $$ of the new Edelbrocks.
The stock Merc intake can also be reused with the addition of an open spacer/adapter for the Holley carb.
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Patrick
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Re: Best 1991 502Mag Refresh
The stock Merc 500 intake is a Dart single plane. It is a good one and can be found used easy and cheap. The carb is a Holley 800 DP. I would use the new HP 525 cam. Don't remember the grind but it is from Crane.
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Re: Best 1991 502Mag Refresh
Thanks everyone , I'm looking for 500++ HP so the HP 500 clone sounds good! What about PatriYacht's suggestion of the HP525 cam?
I'm in salt all the time, Which are better options iron heads or anodized aluminum? And what is the diff between oval and rectangular port heads?
I'm in salt all the time, Which are better options iron heads or anodized aluminum? And what is the diff between oval and rectangular port heads?