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Discussion Starter · #1 ·
Hey Guys, Im Currently Doing A Cobra Bottom End Along With Ford Gt Cams, Ported Heads And Intake, And Maybe A Little Shot, What Kind Of Blower Would You Recommend To Get Along With The Lil Combo I Have??
 

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Discussion Starter · #4 ·
yea i've thought about the f1a and the novi 2000, i've looked at some turbo kits that are pretty decent as far as price, but is it true that you can't use blower cams with a turbo. is that true?????
 

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By Cobra bottom end I hope you dont mean the junk Mahle pistons. The GT cams are not a good fit with a turbo. They were made for a positive displacement blower but work okay with Centrifugals also. Just dont expect to set the world on fire with them. Boost is your friend. The more boost, the more power.
 

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Discussion Starter · #6 ·
No I Mean The Romeo Block With Forged Internals, Not The Original ;mach Setup That Comes Only With The Forged Crank. Another Thing Is That I Have My Heads Ported, Polished And My Intake Is Also Ported And Polished, Should My Compression Go Up On The Motor. I Know That The Compression Stock Is 8.5-1 And I Heard That The Piston And That The Head Work Will Affect Compression. If That Is True Then The Compression Will Go Up Since My Mach 1 Heads Were Designed For 10-1 Compression. Or Will It Still Stay To The Same 8.5 -1 Compression That The Cobra Has???????
 

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First of all the 03-04 Cobra and 03-04 Mach1 share the exact same heads. So the compression wont change because your using different heads. It will depend on what pistons you use plus other factors. Why are you using a cast iron block for your build? The one in the Mach would have been much better being aluminum. What compression you use will depend on what kind of blower you run. For a twinscrew I would go 8:5-1 or even 9:0-1 which is what mine is. Centrifugal I would use minimum 9:5-1 and even go as high as 10:0-1.
 

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I would think of takeing a eaton and porting it to the max.The higer the compression the less the boost needed but if you can have both that multipies the horse power.:tip:
 

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the block is aluminum. it's out of an 04 cobra
03-04 Cobras came with cast iron blocks not aluminum. I think your a little confused.
 

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By Cobra bottom end I hope you dont mean the junk Mahle pistons. The GT cams are not a good fit with a turbo. They were made for a positive displacement blower but work okay with Centrifugals also. Just dont expect to set the world on fire with them. Boost is your friend. The more boost, the more power.
If GT cams arent good for turbos, then why are Ford GT's making 1000+ horsepower with twin turbos?

Im just curious, because the bulit motor with GT cams I have made its way into my Mach 1 and I will be installing a Hellion very soon.
 

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By Cobra bottom end I hope you dont mean the junk Mahle pistons. The GT cams are not a good fit with a turbo. They were made for a positive displacement blower but work okay with Centrifugals also. Just dont expect to set the world on fire with them. Boost is your friend. The more boost, the more power.
Scott the GT cams actually work extremely well for turbo cars. There have been many guys running these upwards of 1000rwhp running GT cams on a turbo combo

No I Mean The Romeo Block With Forged Internals, Not The Original ;mach Setup That Comes Only With The Forged Crank. Another Thing Is That I Have My Heads Ported, Polished And My Intake Is Also Ported And Polished, Should My Compression Go Up On The Motor. I Know That The Compression Stock Is 8.5-1 And I Heard That The Piston And That The Head Work Will Affect Compression. If That Is True Then The Compression Will Go Up Since My Mach 1 Heads Were Designed For 10-1 Compression. Or Will It Still Stay To The Same 8.5 -1 Compression That The Cobra Has???????
Like scott said the heads from the mach and cobra are the same. It will not affect compression. However, you said you ported the heads. So they probably milled them as well. This will affect compression very slightly. Maybe .1 but that is all.

the block is aluminum. it's out of an 04 cobra
04 Cobras do not come with aluminum blocks
 

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Do not forget he said maybe a shot of NOS. So with 550 - 600 HP on a eaton then give it a 150 shot thats 700+ and still be street able.:tip:
 

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Scott the GT cams actually work extremely well for turbo cars. There have been many guys running these upwards of 1000rwhp running GT cams on a turbo combo
I think guys are making good power with turbos despite the GT cams. You and I have no way of knowing how much they actually gain from the cams. Just like with my car Dave. Look at the specs on turbo cams and then blower cams and you'll see they're very different for a good reason.
 

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The Mark8, Terminator, Navigator, Mach1, GT500 all have the same cams, and the 96-98 Cobra have the same exhaust cam, and the GT is only supposed to be a "mild" change.

Ford doesn't put to much research money into cams. In fact many Terminator/Mach1 guys (SC/turbo and NA) swap in 96-01 Cobra intake cams to pick up 10-15hp and not loose any TQ.
 

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Discussion Starter · #17 ·
I Could Of Sworn That It Was A Cobra Block, Well Then I Guess It's Just Another Mach Block. Well It's Fully Built So It Should Take Some Abuse And Handle Some Power. At This Time It's Being Assembled And Put Together. I'm Just Trying To See What Kind Of Numbers I'm Going To Be Pushing. I Guess If I Do Get The Ported Eaton And The Shot It Was Said That I Would Be Making About 700. That's Alright For The Money I'm Going To Put Into It. I Wonder What I Would Be Making If I Go With A Novi Or A Vortech???? Anybody Got Any Numbers??????
 

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I think guys are making good power with turbos despite the GT cams. You and I have no way of knowing how much they actually gain from the cams. Just like with my car Dave. Look at the specs on turbo cams and then blower cams and you'll see they're very different for a good reason.
Yes the specs are different but that doesnt mean that they are bad for turbo cars. Like I said they actually work really well in a turbo app.
 

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Discussion Starter · #20 ·
hey thanks juiced46. i had originally wanted to go twin turbo on my car but i wanted to get that sound that comes from a ford gt. like i said i was told that those cams wouldn't work well with the turbos so i scraped the idea but now that i found out that they actually do well with turbos i'll look for a twin turbo setup. any suggestions????
 
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