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91mm on Built 346ci????

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Old 09-05-2008, 11:39 PM
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Originally Posted by Zombie
wat??

LoooooL
Old 09-06-2008, 12:13 AM
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Originally Posted by venom ws7
Thanks a lot for replies guys.


He is not planning to run th400 any time soon the car have less than 40k miles and will be garage queen we're trying to buy another 99Z28 for race car build.
Do you think it will help to spool faster if We ran 9:5.1 compresstion????

the highest boost we're plannng to run is 16-17psi with race gas and 13psi on 93octane.

Just talked to my brother and he really wants to try this setup since no one ever done it on 346-348ci before and he's very sure the car will be laggy SOB but wants to know how laggy!!! hehehe

I will let you guys know if he's going witht he setup and will post some pics of the build.




Hussam.
why not just do a 408ci and not worry about lag and make MORE power? Doesn't make sense to do a 346 with an S91, its not the proper set-up. Its like putting ported LS1 heads on a 454ci with a stock ported TB. Not smart.
Old 09-06-2008, 12:44 AM
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when i was looking in to the turbo stuff i was wanting a 76 mm seems to be good for everything??
Old 09-06-2008, 12:49 AM
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80 or 85mm will be plenty for the boost you want on a 346ci. When you get a bigger motor, sell the turbo and get a bigger one. Get a T6 if you want to have room to grow.
Old 09-06-2008, 03:41 AM
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go for the 85mm that will be planty for 800hp .then when you go for 408CI you can sell it and go for the s91 for the new big turbo that DRTurbo sell .
Old 09-06-2008, 09:20 AM
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It will be very laggy trust me. And I'm running a converter that is on the looser side for racing.

If I slapped a 91 on my car I'd also have a 100 shot going on too.
Old 09-06-2008, 09:30 PM
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Originally Posted by Pro Stock John
It will be very laggy trust me. And I'm running a converter that is on the looser side for racing.

If I slapped a 91 on my car I'd also have a 100 shot going on too.


Thanks man 91mm with will be mean as hell
Old 09-07-2008, 09:57 AM
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T56 + 348ci + 91mm = You won't like the lag, trust me. You'll have to leave the car in 2nd gear all the time to race folks from a roll.

You should consider twin 61's.
Old 09-07-2008, 06:41 PM
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Originally Posted by Pro Stock John
T56 + 348ci + 91mm = You won't like the lag, trust me. You'll have to leave the car in 2nd gear all the time to race folks from a roll.

You should consider twin 61's.
Listen to everyone in the thread. It WILL be laggy as hell. You will not get full spool by 4500rpm, it will be after 5000. Either go auto or turbo down.
Old 09-07-2008, 08:09 PM
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Originally Posted by CrazyChris
Listen to everyone in the thread. It WILL be laggy as hell. You will not get full spool by 4500rpm, it will be after 5000. Either go auto or turbo down.
auto or manual trans will make no difference in spool.
Old 09-07-2008, 09:03 PM
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Originally Posted by topend
auto or manual trans will make no difference in spool.
LOL....

Thats the second time you've said that in this thread. And now you sound twice as dumb.

I have a m6 turbo car. All my buddies have an auto behind theirs. Guess which one spools regardless of what speed/rpm/gear you're in.....


THE AUTO. If it wasn't better for spooling a turbo, then all the fast ford guys running thumper turbos and 300 ci small blocks would not be using an auto. Add to the fact the power is ALWAYS on, and you've got a definite winner.

Please, cut this nonsense you know none of......

P.S. -Do you know how a torque converter works? If so, you can admit you're wrong now.
Old 09-07-2008, 09:14 PM
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Originally Posted by topend
auto or manual trans will make no difference in spool.
^^^^Wrong. And since it seems you said it twice in one thread I feel the urge to name call....MUST RESIST!!!!!! lol
Old 09-07-2008, 09:36 PM
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Full spool at 5000 means that if you are loafing around in 5th gear, and drop down to 4th and nail it, say while you sitting around 2000 rpms, you need to get that motor to travel 3000 rpms to full spool. Trust me, that can take a while.
Old 09-07-2008, 10:15 PM
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Originally Posted by Mike 01WS6
LOL....

Thats the second time you've said that in this thread. And now you sound twice as dumb.

I have a m6 turbo car. All my buddies have an auto behind theirs. Guess which one spools regardless of what speed/rpm/gear you're in.....


THE AUTO. If it wasn't better for spooling a turbo, then all the fast ford guys running thumper turbos and 300 ci small blocks would not be using an auto. Add to the fact the power is ALWAYS on, and you've got a definite winner.

Please, cut this nonsense you know none of......

P.S. -Do you know how a torque converter works? If so, you can admit you're wrong now.
i always wondered why they came out with automatic transmissions , was it for lazy people or was it too hard to educate ppl how to drive a manual. after reading your post i think its the education part. ppl with evo, viper , mustangs ,bmw, porsche etc all with turbos and manual trans , have no problems running 7-9 seconds quater-mile times .

Full spool at 5000 means that if you are loafing around in 5th gear, and drop down to 4th and nail it, say while you sitting around 2000 rpms, you need to get that motor to travel 3000 rpms to full spool. Trust me, that can take a while.
Why not downshift to 2nd or 3rd............
Old 09-07-2008, 10:30 PM
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Originally Posted by topend
Why not downshift to 2nd or 3rd............
because by then the guy in the next lane with a smaller motor, bigger turbo and an auto is already collecting your $$

With the right converter you just push the tall skinney pedal on the right

although you are right, it will spool at the same time/RPM no matter what the trans is, the head/cam/turbo setup will determine where the motor makes its power. the converter just lets you reach that RPM with little effort on the drivers part


That being said, the properly sized hot side on a 91mm turbo could work with a 346" motor. I would probably suggest a solid roller setup and a single plane to take advantage of the extra RPM you will get with that sized turbo though.
Old 09-07-2008, 10:31 PM
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Well you said you were running a custom turbo kit and also you wanted it fot the street. I would put twins on it. I had a t70 60 mm turbo from ebay and a ebay intercooler on my Mustang gt(04 2v..turd..) And it ran 11.8xs @120 with 10 psi. We next built a 2v with a forged motor and twin 60s and still havnt got it tuned yet. All in all the twins were a whopping $800 more...

My friend large frame 91mm on a 4v cobra with a p/g and 3.73 gear and 15psi it pull 9.9xs but was laggy as ***** from any role...

My suggestion; stci with a stout short block, big cubes for single turbo to spool it up. 400ci+ with a 88-106mm

I would do a 370-400ci motor with master powers 70mm turbos...It would make a good 800rwhp on pump gas and a easy 1100+ with a good tune.

If i didnt dump my money on my turbod turd, i would have a twin 70 lsx in the making...

If your staying single turbo, A 408ci with h/c/i and a 88mm and glide or tranny will have no probs hitting low 9s and pulling hard. If you dont believe ill throw some links in.

this is a 377 with twin 60s and it making 922rwhp..

http://video.google.com/videosearch?...1&sa=N&tab=wv#
Old 09-07-2008, 10:34 PM
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Originally Posted by topend
auto or manual trans will make no difference in spool.
Yes it will!
Old 09-07-2008, 10:39 PM
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Originally Posted by topend
auto or manual trans will make no difference in spool.
You need to learn about turbo cars before posting in threads like this.
Old 09-07-2008, 10:48 PM
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do a t4 88mm. my buddy has a gt47-88 on his 347 and its spools to 13psi by 4k. this is a 6 spd car also. pump gas. thats what i had planned to do before my wallet got the best of me.
Old 09-08-2008, 12:06 AM
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Originally Posted by Pro Stock John
T56 + 348ci + 91mm = You won't like the lag, trust me. You'll have to leave the car in 2nd gear all the time to race folks from a roll.

You should consider twin 61's.

I trust man I already to changed my beother's mind about this.
He's thinking about 85mm What do you think?????

Twin wil be a lot of custom work right???? That's the reason we want single.



Originally Posted by CrazyChris
Listen to everyone in the thread. It WILL be laggy as hell. You will not get full spool by 4500rpm, it will be after 5000. Either go auto or turbo down.

Thanks a lot man Oh I love your car BTW Very sick.
at what RPM do you see full boost with your setup????
I remember you car is an M6 Right????



Originally Posted by topend
auto or manual trans will make no difference in spool.

Oh O.K



Originally Posted by ls2 bait
do a t4 88mm. my buddy has a gt47-88 on his 347 and its spools to 13psi by 4k. this is a 6 spd car also. pump gas. thats what i had planned to do before my wallet got the best of me.

Thats a nice setup how much power did it make on pump gas??? H/C/I

WHen did you dyno your new setup Congrats man those are awesome numbers.


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