Procharger D1 users, how much boost are you seeing?
FormerVendor
Joined: Mar 2006
Posts: 1,540
Likes: 0
From: Hell AFB
Keep in mind, we ended up using a +1in crank pulley to get the boost that high. So these d1sc's were maxed out.
I think 18#'s for the D1SC is the average from what I have seen. Mine maxes at 15#'s and is at its max impellor speed at 6500 RPM. I would like to see 18#'s, but even if I change the crank pulley, I feel I may just see 15#'s at a lower RPM, as then it would be maxed out at a lower RPM as well.
I more or less was just wondering if what everyone was getting both on their LT1 engine's and the LS1's. I agree that the bigger the cubic inches, the less potential boost most will see.
I more or less was just wondering if what everyone was getting both on their LT1 engine's and the LS1's. I agree that the bigger the cubic inches, the less potential boost most will see.
FormerVendor
Joined: Mar 2006
Posts: 1,540
Likes: 0
From: Hell AFB
I think 18#'s for the D1SC is the average from what I have seen. Mine maxes at 15#'s and is at its max impellor speed at 6500 RPM. I would like to see 18#'s, but even if I change the crank pulley, I feel I may just see 15#'s at a lower RPM, as then it would be maxed out at a lower RPM as well.
I more or less was just wondering if what everyone was getting both on their LT1 engine's and the LS1's. I agree that the bigger the cubic inches, the less potential boost most will see.
I more or less was just wondering if what everyone was getting both on their LT1 engine's and the LS1's. I agree that the bigger the cubic inches, the less potential boost most will see.
I won't lie, I have thought about it, as the motor would easily take a maxed out F1, however I am pretty happy with my ability to hook up in 1st gear with 614 RWHP, and with an F1 (or even a few more pounds of boost on the D1SC for that matter) I have a feeling I wouldn't have the traction I do now.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Most D1SC's max out at 18#'s of boost or so. Most D1's can go as high as 20#'s, but thats ideal setups. As stated earlier, the more the cubic inch motor, the less likely you are to see these higher boost numbers. The rest has a bit to do on the specifics you left out.
The D1 uses the same oil your car does from your oil pan. It is less restricted that way and that accounts for the ability to give a few more pounds of boost. However the down side is since it uses the same oil from the same pan, if the blower goes out on you into pieces as they sometimes do, it can take your motor with it.
The D1SC is the D1 unit self contained (hence the SC), meaning it has its own seperate oil, so if it goes out, it won't take anything with it, but because it is self contained it usually won't see the boost level that the D1 would.
Most guys I know run the 12 rib (myself included), as you are correct by saying belt slip can limit your boost level. With a 12 rib and a tensioner though, even maxed out I have heard of very few people with belt slip issues (in fact I don't remember reading or hearing about anyone with slippage with that setup).
The D1SC is the D1 unit self contained (hence the SC), meaning it has its own seperate oil, so if it goes out, it won't take anything with it, but because it is self contained it usually won't see the boost level that the D1 would.
Most guys I know run the 12 rib (myself included), as you are correct by saying belt slip can limit your boost level. With a 12 rib and a tensioner though, even maxed out I have heard of very few people with belt slip issues (in fact I don't remember reading or hearing about anyone with slippage with that setup).
ProCharger DOES NOT offer bracketry for the D1 head units on LSx applications. Everyone that has a LSx and they say they have a D1 is wrong. They have a D1SC.
Most guys I know run the 12 rib (myself included), as you are correct by saying belt slip can limit your boost level. With a 12 rib and a tensioner though, even maxed out I have heard of very few people with belt slip issues (in fact I don't remember reading or hearing about anyone with slippage with that setup).
Just clarifying some things for you Ben.
I hear a D1-sc is good for 20PSI , Thats on a 346 , depending on compression, I hear not to go under 9.0 compression because it gets harder to make boost , 9.2-9.5 is where you want to be on a 347-382 forged street/strip LS1/LS6 motors.
The SD-concepts auto spring tensioner has helped and solved a lot of the belt slipping problems, and on few F-body cars i know they picked up 3 PSI with the SD concepts system and another 2-3 with a bigger-better home made air inlet instead of the procharger intake hat.
The SD-concepts auto spring tensioner has helped and solved a lot of the belt slipping problems, and on few F-body cars i know they picked up 3 PSI with the SD concepts system and another 2-3 with a bigger-better home made air inlet instead of the procharger intake hat.
I have heard people claim to see 20#'s of boost on the D1SC, however this has never been proven that I have seen anywhere on paper. Some guys I have seen personally are in the same boat I am with seeing only 15#'s of boost with it maxed. I am still throwing out there that 18#'s is about the most to expect on an ideal setup.
BTW, I have 8.8:1 CR, but I don't think thats whats limiting my boost. If you plan on running 20#'s of boost 9:5.1 CR, on pump gas it will be too high, and you will need a lower CR to run that boost level on pump gas safely.
BTW, I have 8.8:1 CR, but I don't think thats whats limiting my boost. If you plan on running 20#'s of boost 9:5.1 CR, on pump gas it will be too high, and you will need a lower CR to run that boost level on pump gas safely.
IN the GM High tech mag a few issues ago (2 0r 3) a convertivle orange SS with a 382 claimed to make 800 RWHP at 20 PSI with a D1-sc
they supposedly picked up like 75RWHP with proper tune true duel exhaust , and fuel system , to get to 800 HP
hard to believe but hoping it was true
they supposedly picked up like 75RWHP with proper tune true duel exhaust , and fuel system , to get to 800 HP
hard to believe but hoping it was true