Twin 76mm on a LT1?
10-10-2011, 09:32 PM
#1
Registered User
Thread Starter
Join Date: Oct 2010
Location: The concrete jungle
Posts: 16
Twin 76mm on a LT1?
Has anybody ever put twin 76mm on a lt1 before? I am sure that turbos that big would be more than any LT1 block could handle if you really pushed them. I am just wondering how a 383ci motor would spool the turbos. I have 2 PTE 76gts turbos with the .96ar. I just wonder if they would lag to much and not spool well. Any thoughts? I already have most all the parts to put this together. It is going to be my winter project and I plan on making a build thread with lots of pics if I go through with it.
10-11-2011, 07:13 AM
#2
Registered User
Join Date: Dec 1999
Location: Upstate New York,USA
Posts: 1,791
Re: Twin 76mm on a LT1?
Tiago in Houston put two 76mm on his street purposed LSx T/A. It reputedly puts out about 1,300hp. It murders his transmissions. I think the last time I spoke to him, he'd killed six T56 transmissions. He now has a purpose built TH400 but it's a tough compromise to have a street car in the expanses of Houston (normal commute from one side of Houston to the other on the tollway is still 45 minutes with no traffic!) that uses a transmission without an overdrive. Big Rick(another Houstonian) put a 90mm on his T/A LT1 that went 8's in the quarter in bad air (High humidity) so the LT1 can hold it fine. All an LT1 is , is a SBC with Reverse cooling. It has no more inherent weakness than a traditional SBC and those things have run astonding HP for decades.
Keep us posted on your progress. I know it's an excess to have that much HP on the street but that's why we all wish we could do it
Keep us posted on your progress. I know it's an excess to have that much HP on the street but that's why we all wish we could do it
Has anybody ever put twin 76mm on a lt1 before? I am sure that turbos that big would be more than any LT1 block could handle if you really pushed them. I am just wondering how a 383ci motor would spool the turbos. I have 2 PTE 76gts turbos with the .96ar. I just wonder if they would lag to much and not spool well. Any thoughts? I already have most all the parts to put this together. It is going to be my winter project and I plan on making a build thread with lots of pics if I go through with it.
10-11-2011, 08:03 AM
#3
Registered User
Thread Starter
Join Date: Oct 2010
Location: The concrete jungle
Posts: 16
Re: Twin 76mm on a LT1?
Tiago in Houston put two 76mm on his street purposed LSx T/A. It reputedly puts out about 1,300hp. It murders his transmissions. I think the last time I spoke to him, he'd killed six T56 transmissions. He now has a purpose built TH400 but it's a tough compromise to have a street car in the expanses of Houston (normal commute from one side of Houston to the other on the tollway is still 45 minutes with no traffic!) that uses a transmission without an overdrive. Big Rick(another Houstonian) put a 90mm on his T/A LT1 that went 8's in the quarter in bad air (High humidity) so the LT1 can hold it fine. All an LT1 is , is a SBC with Reverse cooling. It has no more inherent weakness than a traditional SBC and those things have run astonding HP for decades.
Keep us posted on your progress. I know it's an excess to have that much HP on the street but that's why we all wish we could do it
Keep us posted on your progress. I know it's an excess to have that much HP on the street but that's why we all wish we could do it
10-12-2011, 08:59 PM
#5
Registered User
Join Date: Oct 2001
Posts: 2,685
10-16-2011, 10:03 PM
#7
Registered User
Join Date: Aug 2006
Location: Orem, UT
Posts: 1,497
Re: Twin 76mm on a LT1?
Your average built-383 would take like 30psi of boost to get there...
Possible? yes. Completely ridiculous? yes.
10-17-2011, 05:29 PM
#8
Registered User
Thread Starter
Join Date: Oct 2010
Location: The concrete jungle
Posts: 16
Re: Twin 76mm on a LT1?
No its a street car, and the system is actually one of your single 76 kits modified. There is no way I am going to be able to push these turbos to their maximum capability. I just want more power than a single 76 can give so why not slap another one on there?
10-17-2011, 07:31 PM
#10
Registered User
Join Date: Feb 2002
Location: Bridgewater, MA
Posts: 5,645
Re: Twin 76mm on a LT1?
Hmm... interesting! Which kit of mine do you have?
10-21-2011, 02:18 AM
#11
Registered User
Join Date: Nov 2002
Location: Jacksonville
Posts: 4,784
10-21-2011, 04:55 PM
#12
Registered User
Thread Starter
Join Date: Oct 2010
Location: The concrete jungle
Posts: 16
Re: Twin 76mm on a LT1?
Single 76 header kit. I used to have another name on here. I never got that build finished because I got laid off from work. Now that I have a new job and am starting to get back to work on the car, all my friends are way faster. Now I have to try and play catch up.
That is just life I guess.
That is just life I guess.
10-21-2011, 04:58 PM
#13
Registered User
Thread Starter
Join Date: Oct 2010
Location: The concrete jungle
Posts: 16
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
10-31-2016 11:09 AM
stockssn2o
Parts For Sale
14
05-25-2015 08:54 AM