mach 1 block vs cobra block

RedDaemon · Feb 1, 2006

what the heck is the difference between the BLOCKS themselves (lets say 03 mach 1 block vs 03 cobra block)?...not the engines, we all know the difference in performance

is it just a material difference? ive tried looking up specs on each but noone really has anyhting on it, ive been thinking about the mach 1 block as it is cheaper and more readily available than the standard 03 cobra block. if there isnt much of a difference i think im gunna go with the mach 1 block as my foundation...a 4v is a 4v right? (if i can get my project off the ground that is)

if someone has a good website regarding this type of info, please share it with me as i am in the researching phase of my project, thanks!

03ghoststang · Feb 1, 2006

well besides the fact that the motor for 03-04' mach 1 is an all aluminum block and the 03-04' Cobra is cast iron.....the specs are the same as far as the stroke and bore even down to the 4V's, but the mach 1 C/R is pretty high i believe its 9.8:1 but not entirely sure

Crzyhrse · Feb 1, 2006

If it's just the blocks, the Mach 1 is an aluminum block. The Cobra is an iron block. Mach 1 compression is 10:1.

RedDaemon · Feb 1, 2006

Crzyhrse said:
If it's just the blocks, the Mach 1 is an aluminum block. The Cobra is an iron block. Mach 1 compression is 10:1.

thanks, thats def a good thing to know itll be a little trickier getting one of those blocks up to performance par with the actual cobra blocks huh? lol itll be just as expensive to do that versus just getting a cobra engine

holy crap, i just noticed ur sig, why is ur dyno so low for ur mach 1? i know a MD is low but wow, shouldnt u be in the low 300's?

Crzyhrse · Feb 1, 2006

-=NightHawk=- said:
thanks, thats def a good thing to know itll be a little trickier getting one of those blocks up to performance par with the actual cobra blocks huh? lol itll be just as expensive to do that versus just getting a cobra engine

holy crap, i just noticed ur sig, why is ur dyno so low for ur mach 1? i know a MD is low but wow, shouldnt u be in the low 300's?

I've been wanting to take it to some kind of Dyno Day when a Dynojet is being used, but their has'nt been any for a Dynojet in a long time. I'm just curious what the difference in numbers would be. I'm satisfied with the Mustang Dyno numbers. I think on a Dynojet I'd be around 295 HP at the rears, which would almost fall into line with a guy I know with a Mach with pretty much the same mods he's gotten 300 HP and 324 TQ on a Dynojet. I've seen some threads around here with guys who Mustang Dyno their GT's and almost cry at the numbers the Mustang Dyno spits out. About 60 HP less than my numbers.

DropTopPony · Feb 1, 2006

-=NightHawk=- said:
thanks, thats def a good thing to know itll be a little trickier getting one of those blocks up to performance par with the actual cobra blocks huh? lol itll be just as expensive to do that versus just getting a cobra engine

Are you talking about the "Block" or "Shortblock"(crank/pistons/rods) I'm confused by your posts...If your just getting a bare block then the 03 cobra block will be cheaper since its not aluminum like a Mach block. If your talking shortblock then the 03 Cobra will be more since it has all forged internals. The Mach shortblock has the crappy pistons/rods but if it was a 5 speed Mach will have a forged crank also, automatics will have the cast crank like a gt.

The Mach 1 block is also alot lighter @ 75lbs i think but will not handle as much power as a iron block.

RedDaemon · Feb 1, 2006

oh yea, im not saying its BAD im just sayin that its strange that its SO low. i guess you could average the two once u get ur dynojet results that i think would be a pretty accurate read no?

Crzyhrse · Feb 1, 2006

I really don't have much for mods. A stock 5 speed Mach on a Dynojet at the LOWEST dynos 275 HP. With my Predator and C@L combined, I gained 16 HP. That would put me at 291 on a Dynojet. Not sure what I gained with my Catback and X-pipe, but say I gained just 9 HP, I'm at 300. Wollah. The 300 threshold. Very normal numbers. Every dyno is different, and then you'll have the inevidable, "Numbers don't mean crap, take it to the track" comments. I just took it to a shop I know that afew other Mustang friends recommended, so I had my Mach tuned and Dynoed there twice.

RedDaemon · Feb 1, 2006

droptopponynj said:
Are you talking about the "Block" or "Shortblock"(crank/pistons/rods) I'm confused by your posts...If your just getting a bare block then the 03 cobra block will be cheaper since its not aluminum like a Mach block. If your talking shortblock then the 03 Cobra will be more since it has all forged internals. The Mach shortblock has the crappy pistons/rods but if it was a 5 speed Mach will have a forged crank also, automatics will have the cast crank like a gt.

The Mach 1 block is also alot lighter @ 75lbs i think but will not handle as much power as a iron block.

hey sry man didnt see ur post

yea, im only talkin about the blocks themselves, no shortblock or anything whatsoever on them/in them

i forgot that the mach blocks were aluminum so they would in nature be more expensive, tho lighter, wouldnt hold as much power, but where does that limit lie? 400rwhp? 800?

RedDaemon · Feb 1, 2006

Crzyhrse said:
I really don't have much for mods. A stock 5 speed Mach on a Dynojet at the LOWEST dynos 275 HP. With my Predator and C@L combined, I gained 16 HP. That would put me at 291 on a Dynojet. Not sure what I gained with my Catback and X-pipe, but say I gained just 9 HP, I'm at 300. Wollah. The 300 threshold. Very normal numbers. Every dyno is different, and then you'll have the inevidable, "Numbers don't mean crap, take it to the track" comments. I just took it to a shop I know that afew other Mustang friends recommended, so I had my Mach tuned and Dynoed there twice.

i always thought those engines were more powerful than that, somewhere around 305 hp, now that i think about it, itd make sense if that were the case being 305 chp, which would give u that number u have with a few boltons, i think that clears everything up

Crzyhrse · Feb 1, 2006

Even with the so-so internals of the Mach, they can support 600 HP, but that's at the extreme. I believe MMFF threw a Procharger on a bone stock Mach and it made 600 HP. They track tested it afew times before it exploded the engine. I think they got it into the low 11's before destruction.

RedDaemon · Feb 1, 2006

damn, thats still impressive

tomustang · Feb 1, 2006

-=NightHawk=- said:
damn, thats still impressive

not really, same powder rods

RedDaemon · Feb 1, 2006

tomustang said:
not really, same powder rods

just shoot my dreams down like that

u do have a point...but out of an aluminum block?

600hp is pretty fast dont you think? (its fast enough for me...until i have it )

tomustang · Feb 1, 2006

-=NightHawk=- said:
true...but out of an aluminum block?

600hp is pretty fast dont you think? (its fast enough for me...until i have it )

doesnt matter, you are limited by power on ALL parts in the block, the rods sucks, the pistons suck, the block and crank doesn't make up for the weak internals

RedDaemon · Feb 1, 2006

who said anything about keepin the internals stock

RedDaemon · Feb 1, 2006

in all seriousness tho

the reason why i inquired is because if i ever came across a mach 1 engine for a good deal, i wanted to know how responsive it is (like the cobra engine is) to mods, in theory if you were to put the same parts on a mach 1 engine that are on an 03 cobra, would it net you the same numbers / what limit does this block have?

if its 600hp then i think thats good enough for me

sorry if i confused u or anyone else tomustang

RedGTvert · Feb 1, 2006

If your talking about the raw block, it will withstand quite a bit more than 600hp. Now if you want an Aluminum block that can really withstand some power, look for a 96-98 Teksid block, there are guys running 1400rwhp on them.

RedDaemon · Feb 1, 2006

RedGTvert said:
If your talking about the raw block, it will withstand quite a bit more than 600hp. Now if you want an Aluminum block that can really withstand some power, look for a 96-98 Teksid block, there are guys running 1400rwhp on them.

yeah theyre awesome but theyre expensive, 600-700rwhp is all ill really ever need since anything more is pushing whats streetable and what isnt

mach 1 block vs cobra block

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