forged ?

[darebren]

I forgot, and have not found all the answers by searching here yet, but what are the big differences again in our engines versus the 4.6L mustang GT's?

I know we have DOHC, but I'm specifically talking about the Block, Crank, Rods, and pistons.

what is iron, what is forged, what is aluminum... thanks!

[TAF]

Well...I'm probably going to have most all of the mentioned above "For Sale" soon....so you may be able to inspect them yourself...:D

[SergntMac]

Since I had my catalogues out anyway, I looked for 4.6 modular blocks, bare or with rotating assemblies. Both the '03 and '04 Ford Racing catalogues list only one 4.6 modular block, a bare cast iron unit they identify as a "Production GT 4.6L cylinder block." It's listed with two part numbers, one for the Windsor production, and the other for the Romeo plant. The catalogue also says elsewhere that the Windsor plant builds truck engines, and the Romeo plant builds passenger car engines.

What makes this block a "Cobra" short block, must be the internals you add on your own?

[darebren]

here's the thing, I'm spraying my marauder, and am considering using either the 75 or 100 shot. when i look at all the stang forums, these guys are all saying they have sprayed their 4.6L with 100 to 150 shots or wet with no problems, and I'm thinking, okay, for me to be comfortable, i need to figure out the weak links compared to our 4.6 little siblings. If their block, rods, and cranks are the same as mine.... then I'm home free... if not, I might beef up some stuff. I'm pretty sure the 75 shot is harmless, but I know I'll be looking for more.

I ought to consider Dennis trans kit as well. I wonder if I can buy the parts and have a local shop put them in.

[SergntMac]

I hear ya, darebren, best to hear more from others who understand that technology. I can't see why you cannot start out conservatively, and work your way up safely? I don't think any Mustang has an aluminum block, except for the '03 Mach 1. All the Cobras and GTs I've seen are cast iron blocks, and the Cobra has forged internals, but I admit I am not up to speed on that car myself.

Keep in mind your vehicle weight is significantly heaver, which means a greater resistance to the added power. Moreover, take in stride what you read on the web, may be some over the top bragging going on from the desktop pits.

With respect to the trans kit, I think Dennis has it in kit form, so, if you pull the tranny yourself, your rebuild/update cost is marginal.

[hitchhiker]

Well...I'm probably going to have most all of the mentioned above "For Sale" soon....so you may be able to inspect them yourself...:D

Todd, are you putting a 406 with 3 2's in your MM?

[TAF]

Todd, are you putting a 406 with 3 2's in your MM?
nope.......

[Marauderman]

Todd, are you putting a 406 with 3 2's in your MM?
Naw--not Todd--He preferrs to be really different---more a case of
TURBO TODD most likely........ :lol: :banana:

[jspradii]

I forgot, and have not found all the answers by searching here yet, but what are the big differences again in our engines versus the 4.6L mustang GT's?

I know we have DOHC, but I'm specifically talking about the Block, Crank, Rods, and pistons.

what is iron, what is forged, what is aluminum... thanks!
Our MM blocks are aluminum, the rods and crank are cast, the pistons hypereutectic. Using a 75-150 hp shot to this combo should not give you any trouble. I ran my Zex for 7-8 mos and when the internals were pulled for the stroker, they looked almost new (with almost 40K), no visible stress or damage from the nitrous use. Anything above 150, and I would think forged internals are the only way to go. If you're going to do any kind of competition driving, the tranny upgrade Dennis has is a plus in any event.:beer:

[BillyGman]

To answer your question, the marauder engines have the same cast cranks and connecting rods as the Mustang GT's do. I'm not at all sure about Mustang engine blocks though. But I DO know that the Mustang Cobra engine only began to come equipped w/forged pistons, stronger connecting rods, and a forged steel crankshaft on 2003 which was when they were S/Ced.

So all the Mustangs that you're reading about came w/the same cranks as the marauder engine has, and cast pistons which are actually weaker than the hypereutectic pistons that the Marauder has.

[Warpath]

Our MM blocks are aluminum, the rods and crank are cast, the pistons hypereutectic. Using a 75-150 hp shot to this combo should not give you any trouble. I ran my Zex for 7-8 mos and when the internals were pulled for the stroker, they looked almost new (with almost 40K), no visible stress or damage from the nitrous use. Anything above 150, and I would think forged internals are the only way to go. If you're going to do any kind of competition driving, the tranny upgrade Dennis has is a plus in any event.:beer:
The rods are powdered metal and are not cast. Powdered metal usually is weaker than cast.

1996 - 2001 Cobras came with aluminum blocks, forged cranks, cast pistons, powdered metal rods. In 2003, they were switched to an iron block, same crank, forged pistons and rods because of the switch to S/C (increase longevity). There is no 2002 Cobra. I thought Mustangs and Cobras got the same pistons. I believe MMs get the cast crank.

As Mac warned, some of the Mustang guys are interested in peak numbers and don't mind cracking a piston. It gives them an excuse to rebuild. So, take it easy and have someone who has experience with these engines tell you how much you add and have them tune it. Otherwise, its very easy to crack a piston - likely before you know it. It will happen before you hear anything.