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Old 02-16-2012, 10:51 AM   #1
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355 daily driver turbo?

i have came from my daily driver being a turbo awd talon, i used a 35r on it and i love the feeling of boost.

i now have my 91 camaro rs, block and rotating assembly is still in the machine shop. i have 4.10 gears, built 700r4, v6 converter, 9.3 compression(speed pro hyper pistons) , gm performance vortec heads, magnum 1.52 rockers, dual plane intake, 600cfm carb and im using a howards custom ground .470/.470 lift cam. it is a 355 and bottom end will be internally balanced.

i am looking to make it single turbo very shortly. i want to do either a t76 or t70. because of the higher compression and the pistons not being forged it will be intercooled.

i want to run between 6-8 psi and get into the low 11s high 10s with drag radials. i want to know if im on the right track? will this be good enough for my goals? also i will be switching to a carb shop 750 blow through and be tuning using an aem wideband. i am only looking to rev the car to 5500 or 6k MAX.
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Old 02-16-2012, 11:14 AM   #2
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Re: 355 daily driver turbo?

T70 should do that. Only need 500whp for high 10's. Heck may do it with 450whp in a light car set on drag mode.

P trim turbine T4, .96 a/r is what I'd try for that power. It should live at that compression with a good tune and being a blow thru setup.

I dont like dual plane intakes since distribution can be bad. have to check into that more but a small vic jr single plane setup could work. Give up abit of low end response but on boost it should have better fuel distribution.
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Old 02-16-2012, 11:25 AM   #3
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Re: 355 daily driver turbo?

thanks, i was looking into a turbonetics hurricane series t70? but i think its only t3 flanged? ill have to look at the a/r size again and would the heads have enough intake runner only being 170s to put me in the 10s? i want to keep the heads because they are cast and ive had bad luck with warping aluminum heads( ruined a set of afr's due to overheating).
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Old 02-16-2012, 11:26 AM   #4
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Re: 355 daily driver turbo?

also whats the dimensions of your intercooler core? so i have a rough idea of what i need.

also does anyone here use the holsets? could i use a t3 flanged hx40?

thanks,
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Old 02-16-2012, 11:32 AM   #5
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Re: 355 daily driver turbo?

Quote:
Originally Posted by 355sleeper
i want to run between 6-8 psi and get into the low 11s high 10s with drag radials. i want to know if im on the right track? will this be good enough for my goals? also i will be switching to a carb shop 750 blow through and be tuning using an aem wideband. i am only looking to rev the car to 5500 or 6k MAX....
Ken Crocie ran a dual plane while keeping it under 5500-RPM with his poncho turbo build, and made 744 pound feet of torque at 3400-RPM, and 537 horsepower at 4400-RPM. Cam was a 224/230 537"/533" stuffed in a 489 Pontiac engine with 2.11/1.77 intake and exhaust valves running 8.3:1 compression @ 8-psi of boost... running a quadrajet if you can believe it. Turbo specs were kept secret though for some reason.
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Old 02-16-2012, 10:48 PM   #6
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Re: 355 daily driver turbo?

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Ken Crocie ran a dual plane while keeping it under 5500-RPM with his poncho turbo build, and made 744 pound feet of torque at 3400-RPM, and 537 horsepower at 4400-RPM. Cam was a 224/230 537"/533" stuffed in a 489 Pontiac engine with 2.11/1.77 intake and exhaust valves running 8.3:1 compression @ 8-psi of boost... running a quadrajet if you can believe it. Turbo specs were kept secret though for some reason.
this will be my daily driver in the warmer months, im running 1.94/1.55 valves. i will be doing 1 3/4 tubing and a crossover pipe to the battery box.

where are you turbo guys feeding the turbo from? and how about drain? into the pan or elsewhere?

also how much psi are you seeing from this oil feed? is it enough to run a journal bearing turbo? i know all cars will be different as im using a melling hv pump, just want a general idea.
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Old 02-17-2012, 07:38 AM   #7
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Re: 355 daily driver turbo?

Forget the dimensions but the intercooler is Treadstones largest core twin turbo setup. 25" X 9" X 3.5" is the main core size then add on the side tanks and such.

My oil line comes from the port on the rear of the block china wall. Plenty of pressure for a journal bearing turbo. Too much and you will blow seals. -4 line feeding it. -10 line draining it straight to the batterys.

Now my new setup will likely have -6 line for drains to a scavenge pump to help get oil back to the motor.
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Old 02-17-2012, 10:16 AM   #8
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Re: 355 daily driver turbo?

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Forget the dimensions but the intercooler is Treadstones largest core twin turbo setup. 25" X 9" X 3.5" is the main core size then add on the side tanks and such.

My oil line comes from the port on the rear of the block china wall. Plenty of pressure for a journal bearing turbo. Too much and you will blow seals. -4 line feeding it. -10 line draining it straight to the batterys.

Now my new setup will likely have -6 line for drains to a scavenge pump to help get oil back to the motor.
good deal, thank you, i will be picking up a hx40 then and most likely get the new batmowheel for it, over on dsmtuners a guy seen almost 75lbs/min out of one. and you can pick these turbos up dirt cheap. thanks for all your help
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Old 02-17-2012, 10:27 AM   #9
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Re: 355 daily driver turbo?

For a DD I wouldn't recommend the carb.
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Old 02-17-2012, 10:59 AM   #10
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Re: 355 daily driver turbo?

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For a DD I wouldn't recommend the carb.
i was thinking about that and i might go fuel injection, a carb is almost a grand and for a efi setup its 2-3k but i have the benefit of easier starts and better fuel economy. how do you like your holley efi setup? i will take it somewhere to have it tuned if i go efi
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Old 02-17-2012, 11:31 AM   #11
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Re: 355 daily driver turbo?

Quote:
Originally Posted by 355sleeper
i was thinking about that and i might go fuel injection, a carb is almost a grand and for a efi setup its 2-3k but i have the benefit of easier starts and better fuel economy. how do you like your holley efi setup? i will take it somewhere to have it tuned if i go efi...
For the street, you can't beat a Holley w/vacuum secondaries, and many turbo guys have gone that route. You just need to run an enclosure box with it and not a carb hat, as this will ensure that the secondaries stay open during boost. The below pic is not my setup, but was fabricated by a fellow member on the Turbo Forums, and works flawlessly...

Click the image to open in full size.
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Old 02-17-2012, 12:37 PM   #12
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Re: 355 daily driver turbo?

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For the street, you can't beat a Holley w/vacuum secondaries, and many turbo guys have gone that route.
I've never seen that picture before and that's some pretty original fab work. Unless initial cost is the only factor, to say that a carb can't be beat for the street is pretty disingenuous.

As far as the Holley 950 system, it works very well. The majority of tuning can be performed on the street and then a dyno can be used for the last bit of tweaking. Or, the new efi systems have autotune where you just drive the car around and it sets itself.
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Old 02-17-2012, 12:41 PM   #13
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Re: 355 daily driver turbo?

Quote:
Originally Posted by calebzman
I've never seen that picture before and that's some pretty original fab work. Unless initial cost is the only factor, to say that a carb can't be beat for the street is pretty disingenuous...
No no, what I said above meant that a vacuum secondary carb can't be beat for the street if he has his heart set on going with a carburetor. Fuel injection is a different story...
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Old 02-17-2012, 01:01 PM   #14
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Re: 355 daily driver turbo?

Oops, completely misunderstood. Thanks for clearing that up.
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Old 02-17-2012, 01:45 PM   #15
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Re: 355 daily driver turbo?

Quote:
Originally Posted by calebzman View Post
I've never seen that picture before and that's some pretty original fab work. Unless initial cost is the only factor, to say that a carb can't be beat for the street is pretty disingenuous.

As far as the Holley 950 system, it works very well. The majority of tuning can be performed on the street and then a dyno can be used for the last bit of tweaking. Or, the new efi systems have autotune where you just drive the car around and it sets itself.
i cant find a self tuning one that supports a turbo/blower. if you know of one, please let me know and ill go that route over carb. i want simplicity, not something i have to tinker with for a while to get it right... and budget is not an issue, i will be gathering parts over a long period of time.
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Old 02-17-2012, 01:58 PM   #16
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Re: 355 daily driver turbo?

Well, I'm not being quoted, but I will show you the best way anyway cuz I'm a nice guy...

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Old 02-17-2012, 02:47 PM   #17
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Re: 355 daily driver turbo?

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Well, I'm not being quoted, but I will show you the best way anyway cuz I'm a nice guy...

sweet thats what ill do then, i searched for like 2 hours now and cant find a complete kit, i know you already spoonfed it to me lol, but would you find me a link to a complete kit?
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Old 02-17-2012, 03:00 PM   #18
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Re: 355 daily driver turbo?

http://www.holley.com/types/Dominato...%20-%20ECU.asp

http://www.ebay.com/itm/Holley-Domin...#ht_2678wt_698
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Old 02-17-2012, 03:54 PM   #19
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Re: 355 daily driver turbo?

oh ok, so i would need to buy a manifold, fuel rails and injectors on top of it then, i was thinking it was a complete set up. and thanks for all your help

i cant tell, does it come with the throttle body?

Last edited by 355sleeper; 02-17-2012 at 04:28 PM.
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Old 02-17-2012, 06:27 PM   #20
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Re: 355 daily driver turbo?

If you want to go with Holley, I'd choose the cheaper HP system since the only major difference between that and the dominator ecu is that it can only run 1 O2 sensor instead of 2. The 550-601 includes the ecu and wiring harness.

Then, buy a new or used tpi/stealth ram/ect. setup that comes with the manifold, runners, throttle body, & fuel rails. You'll need larger injectors (50-60lb), fuel pump, and an afpr.

The links Street Lethal posted are ecu only.
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Old 02-17-2012, 06:43 PM   #21
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Re: 355 daily driver turbo?

Quote:
Originally Posted by calebzman
The links Street Lethal posted are ecu only.
I left him to decide which route he wanted to go in terms of intake setup, which is why I only posted the ECU, and the Dominator over the HP was based on the fact that he said that there was no budget, so no point in trying to save any money. If he wants a more complete HP setup, then I would have him go with the 550-820, instead...

http://www.summitracing.com/parts/HLY-550-820/

Click the image to open in full size.
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Old 02-17-2012, 07:04 PM   #22
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Re: 355 daily driver turbo?

Quote:
Originally Posted by Street Lethal View Post
I left him to decide which route he wanted to go in terms of intake setup, which is why I only posted the ECU, and the Dominator over the HP was based on the fact that he said that there was no budget, so no point in trying to save any money. If he wants a more complete HP setup, then I would have him go with the 550-820, instead...

http://www.summitracing.com/parts/HLY-550-820/

Click the image to open in full size.
i will being doing it this way, and they even said it would self tune for turbos also, which is what im after. thank you so much, the car will be my daily for a while so i will have time to accumulate parts. thank you all so much for the help
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Old 03-04-2012, 05:17 AM   #23
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Re: 355 daily driver turbo?

Quote:
Originally Posted by Street Lethal View Post
I left him to decide which route he wanted to go in terms of intake setup, which is why I only posted the ECU, and the Dominator over the HP was based on the fact that he said that there was no budget, so no point in trying to save any money. If he wants a more complete HP setup, then I would have him go with the 550-820, instead...

http://www.summitracing.com/parts/HLY-550-820/

Click the image to open in full size.
well thanks man you give me idea

many thanks
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