Super Charging vs Crate Engine
Thread Starter
Pro
Joined: Sep 2010
Posts: 707
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From: Murrysville PA
Super Charging vs Crate Engine
I was considering supercharging my LS1 vert until I read that the boost doesn't really come and is not reached until 1500 rpm or greater; so not instantaneous. So you don't feel it at 700 rpm in first gear?
Is this correct?
Would a crate engine GM LS376, 525 hp and 489 tq be a better option for an instant send off in first gear. Although that torque is not reached until 4,400 rpm.
http://www.jegs.com/ECatalog/full.asp?page=8
Do you have to go to a bigger block engine to get those results.
I guess that I am looking for immediate results as soon as you hit the gas pedal; it's o.k. to laugh my skin is getting thicker.
Please excuse my technical ignorance.
Thank you
Is this correct?
Would a crate engine GM LS376, 525 hp and 489 tq be a better option for an instant send off in first gear. Although that torque is not reached until 4,400 rpm.
http://www.jegs.com/ECatalog/full.asp?page=8
Do you have to go to a bigger block engine to get those results.
I guess that I am looking for immediate results as soon as you hit the gas pedal; it's o.k. to laugh my skin is getting thicker.
Please excuse my technical ignorance.
Thank you
Former Vendor
Joined: Aug 2011
Posts: 1,307
Likes: 115
From: Tampa Fl
St. Jude Donor '12
Corvette Camaro GTO GM Truck perforamnce tuning in Tampa
you want boost while idling ?
The best part about the supercharger application is it runs like stock, until you tip into the throttle, then hold on!
Not all superchargers built boost at the same pace/level. Determine what you use the car for the most. Rear mount units feel differant than front mounts. E-Force builds power differant than ProCharger.
If you use the car for quarter mile racing, you may want to consider a differant unit than a road racers.
Then when you did your homework, call Chris at Eastcoast Superchargers.
www.TampaTuning.com
The best part about the supercharger application is it runs like stock, until you tip into the throttle, then hold on!
Not all superchargers built boost at the same pace/level. Determine what you use the car for the most. Rear mount units feel differant than front mounts. E-Force builds power differant than ProCharger.
If you use the car for quarter mile racing, you may want to consider a differant unit than a road racers.
Then when you did your homework, call Chris at Eastcoast Superchargers.
www.TampaTuning.com
Drifting
Joined: Dec 2000
Posts: 1,833
Likes: 4
From: Calgary, Alberta
My magna charged 04 dumps the boost until about 2200 RPM. That can be changed. If you have boost at RPM's much below that the car will be on boost ALL the time. Not sure I would want to pay the fuel bill for a car that was always on boost much less the longevity unless it were a track only car. Cruising on the highway at 75 in 6th gear my RPM's are about 1500. I would NOT want the car on boost in those conditions. Similar situation in city stop and go driving. Always on boost is something I would not want. A little more mash on the go pedal gets me into boost quickly when I want it.
Safety Car
Joined: Nov 2000
Posts: 4,549
Likes: 30
From: Shenandoah Valley Virginia
If you are looking for IMMEDIATE get up and go at low RPM, forget about a blower. Change your rear gears to a 4:10 ratio. Response will be immediate and snap your head back compared to stock ratios. Cost will be substantially less than either big cubes or a blower.
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
You don't want boost too early. It will just be a smoke show when you try to launch. Centrifugal vs Roots type give a different profile. None of them give you boost immediately since you would be inhaling fuel for no benefit as you cannot get traction down there anyway.
For more immediate power, you can add gear or more cid.
Thread Starter
Pro
Joined: Sep 2010
Posts: 707
Likes: 0
From: Murrysville PA
If you are looking for IMMEDIATE get up and go at low RPM, forget about a blower. Change your rear gears to a 4:10 ratio. Response will be immediate and snap your head back compared to stock ratios. Cost will be substantially less than either big cubes or a blower.
I will go with changing the gear ratio in the diff ( either 390 or 410). Seems to be exactly what I'm looking for.
I had read a few months back that the change to 410 would make first gear useless.
Can you comment on this.
Thank you.
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Safety Car
Joined: Nov 2000
Posts: 4,549
Likes: 30
From: Shenandoah Valley Virginia
You are going to run out of first gear quickly with 4:10's. Two recommendations 1) Do a search in the C5 general and tech sections for threads on gears. There have been a bunch over the past several years, lots of good info there. 2) Find someone locally that has made the swap and get a ride. You can post in the regional section for your area and probably get some response.
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
First of all, I want to thank everyone for there answers and knowledge.
I will go with changing the gear ratio in the diff ( either 390 or 410). Seems to be exactly what I'm looking for.
I had read a few months back that the change to 410 would make first gear useless.
Can you comment on this.
Thank you.
I will go with changing the gear ratio in the diff ( either 390 or 410). Seems to be exactly what I'm looking for.
I had read a few months back that the change to 410 would make first gear useless.
Can you comment on this.
Thank you.
Intermediate
Joined: Jun 2012
Posts: 48
Likes: 0
How often are you even below 1500 rpm's and actually needing boost in the first place? If you're planning on using the boost for any significant reason I'm assuming you'll be racing or trying to go fast for some reason and will almost certainly already be above 1500 rpm's. So, why would it necesarrily matter if it doesn't kick in til 1500?
Former Vendor
Joined: Apr 2006
Posts: 2,470
Likes: 2
From: Portland OR
St. Jude Donor '10-'11-'12
My vote is a big cube n/a beasty.... Our 457 will smoke most s/c on a stock engine and be 100% more reliable. Simple as that. These engines are not built for boost. Abuse one the way you can a proper built engine and it wont last long.
Former Vendor
Joined: Apr 2006
Posts: 2,470
Likes: 2
From: Portland OR
St. Jude Donor '10-'11-'12
quote for you:
My vote is a big cube n/a beasty.... Our 457 will smoke most s/c on a stock engine and be 100% more reliable. Simple as that
Tech Contributor
Joined: Jan 2007
Posts: 19,359
Likes: 1,127
From: Dyer, IN
Former Vendor
Joined: Apr 2006
Posts: 2,470
Likes: 2
From: Portland OR
St. Jude Donor '10-'11-'12
Just stating facts. Stock engines are not built for boost from GM unless its one of their boosted offerings. Compression, piston material, rings .. bunch of differences between an engine built for boost and one for n/a and you very well know that. It's not hard to say what is said at all and its the truth.
Your childish bantering is simply just that.. have a nice night, I wont respond to your BS anymore. Far to many other things to do
Your childish bantering is simply just that.. have a nice night, I wont respond to your BS anymore. Far to many other things to do
Thread Starter
Pro
Joined: Sep 2010
Posts: 707
Likes: 0
From: Murrysville PA
You don't want boost too early. It will just be a smoke show when you try to launch. Centrifugal vs Roots type give a different profile. None of them give you boost immediately since you would be inhaling fuel for no benefit as you cannot get traction down there anyway.
For more immediate power, you can add gear or more cid.
Thank you.
