engine question

[Camaroextra]

i know that the mach1's have the dohc that the cobra has minus the blower right? are the internals the same?

[PNYKLR2]

no they are not the cobra has forged internals the mach does not.

[drenath]

Old post, but Mach are very similar to the N/A Cobras of 96-01. The 03-04 "Terminator" Cobras are an entirely different beast...

Manual Machs have the same forged crank. Autos use a cast crankshaft.

Machs use 10.1:1 compression hypereutectic pistons and cast rods. 03/04 Cobras have forged Manley H-Beam rods and Forged pistons, 8.5:1 c/r.

Depending on your setup/tune, the Mach shortblocks are good to around 450-500 crank horsepower. If you look around you'll find 800+rwhp Terminators still on the stock block.

[The EnforceR]

whoa i didnt know that little tid bit of info, i learned somethin new today. always thought the cobra was the same exact 32 valve as the machs

[drenath]

Machs also use a cast aluminum engine block as well (WAP). Saves about 100lbs :)

We share our transmission and rear end with GT's (Tremec 3650, 4R70W for the autos, all with 28 spline SRA) 96-98 Cobras were SRA also with I believe the T-45, which also made it into the 99 model. 99+ Cobras are IRS.

As far as transmissions, 01 cobras use the Mach/GT trans, terminators use a 6-speed T-56

[98chevyman]

yea we use to know a guy that had a 250 shot on a stock gt around about 00 ro so model that his engine didnt stick around long so im guessing the gt have a hype piston and cast crank but i gota buddy with a 99 cobra so is his all forged u think its convertible so to make it fast he needs a charger or some nos

[drenath]

yea we use to know a guy that had a 250 shot on a stock gt around about 00 ro so model that his engine didnt stick around long so im guessing the gt have a hype piston and cast crank but i gota buddy with a 99 cobra so is his all forged u think its convertible so to make it fast he needs a charger or some nos99 cobra is similar to the machs. Aluminum block, forged crank, cast rods and pistons, high compression. The fully forged cobra motors were 03-04

Here's a stock block TT 03 Cobra. If only the guy could drive!!!!
http://videos.streetfire.net/video/ef20691a-c6ca-4373-9030-98770170b36b.htm

Edit: clarified some yearly differences for the cobras -Pete