stage 2 V6 twin turbo question?

nasty351w · 01-29-2009, 07:25 PM

i have a stage 2 274ci V6 set up for twins. im looking to put 2 precision 70mm hpq turbos on it. i wanna make 1300-1400hp. people are telling me to go with smaller turbos like two 67's. i wanna a quik spool up with out messing with nos. what A/R ex ratio would i need? what brand turbo? would like to hear what u guys think.

ray jr · 01-29-2009, 10:52 PM

i made 1300-1400 hp with my buick twin turbo v6. went 8.04 at 3300 lbs. i ran some john craig turbo's that were a 70 housing with a 72 wheel. awesome setup but slow spooling. that was 8 years ago so the computers and convertors might be better. i know when i was racing v6's duttweiler really liked the turbonetics 66's. alot of buick also ran precision turbo's but i dont remember the sizes. i would call precision and ask them , they would know your answer. good luck !

JayC · 01-30-2009, 04:21 PM

We have two 75s on our V6 and we made over 1300 at the wheels.

If you wanna shoot me a PM or call me at the shop, Ill be happy to talk to you about it. Shop number is 919 207 0677.

DrTurbo · 01-30-2009, 06:45 PM

Quote:

Originally Posted by JayC

We have two 75s on our V6 and we made over 1300 at the wheels.

If you wanna shoot me a PM or call me at the shop, Ill be happy to talk to you about it. Shop number is 919 207 0677.

This car right

http://www.turbobuick.com/forums/2004635-post428.html

MIGHTY6 · 01-30-2009, 09:04 PM

What kind of torque numbers do these motors make @ 1300-1400 hp?

Dustin11 · 01-31-2009, 08:07 AM

Quote:

Originally Posted by nasty351w

i have a stage 2 274ci V6 set up for twins. im looking to put 2 precision 70mm hpq turbos on it. i wanna make 1300-1400hp. people are telling me to go with smaller turbos like two 67's. i wanna a quik spool up with out messing with nos. what A/R ex ratio would i need? what brand turbo? would like to hear what u guys think.

How much rpm will the motor make? There's a big difference in shifting at 7500 vs shifting at 8500. What compression?

2 67's from Precision will get you there. The 70's will work but will need a looser converter. If you don't plan to shift at higher than 7500 you need the smaller 67's. The ball bearing version will help it spool without the n20.

.82 a/r for twins

Louie L · 01-31-2009, 08:40 AM

How bout 2 of those new PTE 62-62 BB turbos? Those would get the job done. Most are making more power with em than rated.

nasty351w · 02-01-2009, 04:28 PM

Quote:

Originally Posted by Dustin11

How much rpm will the motor make? There's a big difference in shifting at 7500 vs shifting at 8500. What compression?

2 67's from Precision will get you there. The 70's will work but will need a looser converter. If you don't plan to shift at higher than 7500 you need the smaller 67's. The ball bearing version will help it spool without the n20.

.82 a/r for twins

shift about 8500 maybe a lil higher. 8 to 1 compression.

TwinT66 · 02-01-2009, 05:16 PM

We had 2 turbonetics T70 bb turbos with q trim exhaust wheel with.69 pte exhaust housing.We used a tight converter so spool up suffered.We put a looser converter which helped spool up but hurt top end. Ran at Atco nj and crossed line at 9200.

Tony

Dustin11 · 02-01-2009, 08:26 PM

Quote:

Originally Posted by nasty351w

shift about 8500 maybe a lil higher. 8 to 1 compression.

Converter tech has come a long way. I have a 9.5" converter in John Gallina's car. It will spool twin GT 42-76's without n2o and only slip 5%. Car has been 6.90's and 202mph. I think I could get twin 70's going if you can shift at 8500. Anything you buy will greatly benefit from a DBB design at this point.

What weight, rear tire size and gear will you be using?

TTGN · 02-02-2009, 11:04 AM

look into GT 3584 with 67 compression wheel / that will do it!

ragtt4.5 · 02-02-2009, 02:19 PM

I am still in the process of collecting parts for my stage 2. Any helpful tips or sugestions, used parts maybe? I am really interested in the info. For th erecord I have 2 older hifi 60-1 turbos.

snoopstang · 02-03-2009, 10:53 AM

nasty 351 and ragtt what kind of motors are you going to use?

nasty351w · 02-03-2009, 02:19 PM

Quote:

Originally Posted by snoopstang

nasty 351 and ragtt what kind of motors are you going to use?

stage 2 buick V6

nasty351w · 02-03-2009, 02:21 PM

Quote:

Originally Posted by Dustin11

Converter tech has come a long way. I have a 9.5" converter in John Gallina's car. It will spool twin GT 42-76's without n2o and only slip 5%. Car has been 6.90's and 202mph. I think I could get twin 70's going if you can shift at 8500. Anything you buy will greatly benefit from a DBB design at this point.

What weight, rear tire size and gear will you be using?

car should weight about 3100lbs and a 28 in tall tire with 3.73 gear. i might step it down to a 3.42

01-29-2009, 07:25 PM	#1
nasty351w Junior Member Pre-Staged Join Date: Oct 2007 Location: eastside michigan Posts: 96	stage 2 V6 twin turbo question? i have a stage 2 274ci V6 set up for twins. im looking to put 2 precision 70mm hpq turbos on it. i wanna make 1300-1400hp. people are telling me to go with smaller turbos like two 67's. i wanna a quik spool up with out messing with nos. what A/R ex ratio would i need? what brand turbo? would like to hear what u guys think.

01-30-2009, 04:21 PM	#3
JayC Junior Member Burnout box Join Date: Mar 2008 Location: Garner, NC Posts: 22	We have two 75s on our V6 and we made over 1300 at the wheels. If you wanna shoot me a PM or call me at the shop, Ill be happy to talk to you about it. Shop number is 919 207 0677. __________________ Jay Carter Big Wood Racing

01-31-2009, 08:40 AM	#7
Louie L Senior Member Smoked another BBC Join Date: Nov 2006 Location: Melbourne, Florida Posts: 1,218	How bout 2 of those new PTE 62-62 BB turbos? Those would get the job done. Most are making more power with em than rated. __________________ Louie L 1987 Buick Grand National Dart 400ci 23 deg SBC, PT106, FAST-XFI, AMS 1000 Hartline Performance . Com

02-02-2009, 02:19 PM	#12
ragtt4.5 Junior Member Burnout box Join Date: Feb 2009 Posts: 17	twin turbo v6 I am still in the process of collecting parts for my stage 2. Any helpful tips or sugestions, used parts maybe? I am really interested in the info. For th erecord I have 2 older hifi 60-1 turbos.

02-03-2009, 10:53 AM	#13
snoopstang Junior Member Spooled up Join Date: Jan 2008 Location: poplar bluff, mo Posts: 187	nasty 351 and ragtt what kind of motors are you going to use? __________________ Snoopstang II 2001 Ford Mustang 347 blowthrough 88mm with a glide on a true 10.5"

01-29-2009, 10:52 PM	#2
ray jr Senior Member Smoked another BBC Join Date: Dec 2005 Location: ohio Posts: 1,236	i made 1300-1400 hp with my buick twin turbo v6. went 8.04 at 3300 lbs. i ran some john craig turbo's that were a 70 housing with a 72 wheel. awesome setup but slow spooling. that was 8 years ago so the computers and convertors might be better. i know when i was racing v6's duttweiler really liked the turbonetics 66's. alot of buick also ran precision turbo's but i dont remember the sizes. i would call precision and ask them , they would know your answer. good luck !

01-30-2009, 09:04 PM	#5
MIGHTY6 Junior Member Spooled up Join Date: Dec 2005 Location: Victoria, Texas Posts: 153	What kind of torque numbers do these motors make @ 1300-1400 hp?

02-01-2009, 05:16 PM	#9
TwinT66 Junior Member Pre-Staged Join Date: Sep 2007 Location: Swansea Ma Posts: 85	We had 2 turbonetics T70 bb turbos with q trim exhaust wheel with.69 pte exhaust housing.We used a tight converter so spool up suffered.We put a looser converter which helped spool up but hurt top end. Ran at Atco nj and crossed line at 9200. Tony

02-02-2009, 11:04 AM	#11
TTGN Junior Member Pre-Staged Join Date: Sep 2007 Location: Limerick PA Posts: 96	look into GT 3584 with 67 compression wheel / that will do it!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode