Aluminator or 2004 Cobra block
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Old March 28th, 2009, 10:45 PM   #1
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Aluminator or 2004 Cobra block


Besides one being aluminum & lighter, the other Cast iron & heavier, whats the difference in the block design between the aluminator block and the 2004 cobra block. Got a 98 GT and putting in a forged motor 2v PI heads (maybe worked) & 2.1 KB. Figure about 450hp. Just not trying 2 spend an extra 1500 hundred on a aluminum short block, if the 2004 Cobra block is the same design besides weight and the metal it is made of. Would appreciate the input
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Old March 28th, 2009, 11:13 PM   #2
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The cast iron is stronger but the aluminum block is more than strong enough. I would consider an aluminum block from the Ford Exploder.

I have a cast Iron 03 Cobra block.
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Old March 28th, 2009, 11:16 PM   #3
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You have the 2.1 already or going to get it? 450 hp is only barely above stock. Not worth the headache of totally forging for 50 more hp... go big or go home. If your forging go for 500+

Why you getting a "cobra" block if your forging it anyways? With 2v heads? Blocks are never the weakness, but the internals (yeah to a point). Or you getting a crate motor?
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Old March 29th, 2009, 02:17 AM   #4
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agrreed with ryan...
i dont have a lot of experience with the mod blocks, but its my understanding that with a rod and piston change the 2v block can hold 600hp with the factory crank

id keep your block and save that money, good pistons and 4130 rods...TFS heads and custom cams
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Old March 29th, 2009, 02:49 AM   #5
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Originally Posted by Dcskater602 View Post
agrreed with ryan...
i dont have a lot of experience with the mod blocks, but its my understanding that with a rod and piston change the 2v block can hold 600hp with the factory crank

id keep your block and save that money, good pistons and 4130 rods...TFS heads and custom cams

Yeah TFS heads ftmfw
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Old March 29th, 2009, 02:51 AM   #6
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Originally Posted by jivepepper View Post
Yeah TFS heads ftmfw
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Old March 29th, 2009, 11:19 AM   #7
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hahaha i opnly worte tfs heads... still can barely find info about them lol
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Old March 29th, 2009, 11:29 AM   #8
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Originally Posted by Dcskater602 View Post
hahaha i opnly worte tfs heads... still can barely find info about them lol
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Old March 29th, 2009, 11:35 AM   #9
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The aluminator and cobra motors have damn near the same rotating assembly. Its really about how much money you want to spend.
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Old March 29th, 2009, 11:37 AM   #10
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Originally Posted by C MY 4D View Post
The aluminator and cobra motors have damn near the same rotating assembly. Its really about how much money you want to spend.
I think he just wants the block and not the internals.
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Old March 29th, 2009, 04:18 PM   #11
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Originally Posted by jivepepper View Post
Yeah TFS heads ftmfw
quality product right there

after all theyre so concerned about the success of these things that you cant say anything negative about them (be it here or another forum) w/o your post getting deleted
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Old March 29th, 2009, 04:19 PM   #12
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If the 2004 Cobra block is the same design as the Aluminator block except being cast iron I will get the 2004 Cobra short block with forged internals, and save some money. I dont feel like taking out my motor taking it apart and getting it redone if I can get A shortblock with a brand new 2004 Cobra block and new forged internals.

Last edited by Boostr; March 29th, 2009 at 04:22 PM.
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Old March 29th, 2009, 04:22 PM   #13
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Originally Posted by jivepepper View Post
I think he just wants the block and not the internals.
Want the short block.
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Old March 29th, 2009, 04:24 PM   #14
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Originally Posted by jivepepper View Post
I think he just wants the block and not the internals.
Originally Posted by RyanGT View Post
You have the 2.1 already or going to get it? 450 hp is only barely above stock. Not worth the headache of totally forging for 50 more hp... go big or go home. If your forging go for 500+

Why you getting a "cobra" block if your forging it anyways? With 2v heads? Blocks are never the weakness, but the internals (yeah to a point). Or you getting a crate motor?
Getting the crate motor, and KB, and probaply will go 500+

Last edited by Boostr; March 29th, 2009 at 04:31 PM.
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Old March 29th, 2009, 04:50 PM   #15
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I choose the alum. block,saves wieght and will handle more power than you can throw at it. more racers use the alum. than the cast iron...Teksid ftmfw!
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Old March 29th, 2009, 05:15 PM   #16
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75 lb savings on the aluminum block.....and the Aluminator has a few versions to choose from as far as N/A and Forced Induction....

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Old March 29th, 2009, 05:21 PM   #17
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Originally Posted by ajm View Post
quality product right there

after all theyre so concerned about the success of these things that you cant say anything negative about them (be it here or another forum) w/o your post getting deleted
+1 Trick Flow hasn't been known for using quality materials in their head castings...... 4V Cobra R or GT heads FTMFW
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Old March 29th, 2009, 05:29 PM   #18
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I'd go aluminum if you have the money.
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