Tvs1900 on 402/408 stroker
I own a 2.9 Whipple, 2.3 ZR1 blower and a couple 1900 LSAs. I would have a hard time picking between the 2.9 and 1900.
There's no comparison as far as price goes. You can get a fully CNC ported and rebuilt LSA with Lid, and rails for roughly $3200. Don't see a used and abused 2.9 Whipple going for under $4500. By all means I'm a Whipple guy but the gains from a 2.9 Whipple over a properly put together 408 LSA isn't worth it.

There's no comparison as far as price goes. You can get a fully CNC ported and rebuilt LSA with Lid, and rails for roughly $3200. Don't see a used and abused 2.9 Whipple going for under $4500. By all means I'm a Whipple guy but the gains from a 2.9 Whipple over a properly put together 408 LSA isn't worth it.
if the originator posted and had said he was on a $4500 budget and hopes to makes 700rwhp, then sure, give the 1.9L a try. Most FI guys don't want to build it a setup that hits the ceiling quick... room to grow is good (if that interests the originator).
if the originator posted and had said he was on a $4500 budget and hopes to makes 700rwhp, then sure, give the 1.9L a try. Most FI guys don't want to build it a setup that hits the ceiling quick... room to grow is good (if that interests the originator).
He asked how that blower will perform on a bigger bore. Which OP should've asked how it would perform on a bigger stroke. Regardless that blower will perform amazing. Yes from personal first hand experience with both blowers. I'll put that 1900 against any 2.9 LS vehicle around. The 1900 will keep up with a 2.9 on a 376, 388, 402, 408, 416, 417.
Last edited by supermaro; May 6, 2017 at 08:17 PM.
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He asked how that blower will perform on a bigger bore. Which OP should've asked how it would perform on a bigger stroke. Regardless that blower will perform amazing. Yes from personal first hand experience with both blowers. I'll put that 1900 against any 2.9 LS vehicle around. The 1900 will keep up with a 2.9 on a 376, 388, 402, 408, 416, 417.
OP, what are your goals for the car?
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And what are you claiming as "impressive" numbers ? And are they supported by "impressive" real world results ?
If it is for a tow vehicle that might never go over 3-4000rpm, it might work just fine.....depending on exactly what you're wanting it to do though
Too many clueless turbo experts chiming in
Too many clueless turbo experts chiming in

OP, go to camaro5.com and search for LSA setups. A lot more guys running them with different setups you can read thru. You could always reach out to ADM who sell hundreds of these setups, see if they think it's a good blower for a 408ci. Depending on your goals they might say "it's fine, but not ideal". You can see your aren't getting many responses here...
OP, go to camaro5.com and search for LSA setups. A lot more guys running them with different setups you can read thru. You could always reach out to ADM who sell hundreds of these setups, see if they think it's a good blower for a 408ci. Depending on your goals they might say "it's fine, but not ideal". You can see your aren't getting many responses here...
If you want to go on other forums. Go on the CTSVowners forum. You'll see the big boys pushing that blower to its potential. Heck what would they know those are the original vehicles that came equipped with that blower. You'll also see countless let downs of that famous 2.9 blower. Yea turns out they don't like to be spun at say that rated RPM continuous speed.

Btw RealQuick those numbers on your sig with an M6 and turbo are kinda pathetic. You should change your name to NotQuick. Shouldn't you be like in the 1k+hp range? I highly doubt with those numbers you've ever seen a 10 sec pass. I guess you're right you should swap out that hotcam you're probably running.
Last edited by supermaro; May 7, 2017 at 12:57 PM.
OP, go to camaro5.com and search for LSA setups. A lot more guys running them with different setups you can read thru. You could always reach out to ADM who sell hundreds of these setups, see if they think it's a good blower for a 408ci. Depending on your goals they might say "it's fine, but not ideal". You can see your aren't getting many responses here...
Whipple 2.9 - 2.9 x 18,000 = 52,500 L per min
Eaton 1.9 - 1.9 x 26,000 = 49,400 L per min
So even though the blower volume is 35% bigger on the whipple, the total output is only 5-6% more. Mind you, this is without porting of the 1.9 and honestly with the porting they become virtually identical in flow.
What the OP needs to consider in the combo though is what fuel he will run and there fore the boost. Where the whipple will shine over the eaton is when it will be above 16psi or so. The eaton starts tanking in efficiency once you go above that so considering that his motor is over 400", it should be just fine. There are simple spreadsheets you can find on the interwebs to calculate what to expect with both blowers given the cubes and I think if I were in the op's shoes I would put money into compression (10.5-11), E85, and a ported 1.9L.
bigger blower = more airflow at a more manageable IAT, that's why it is better.
No different than running an undersized turbo... compressor is out its efficiency range and pushes hot air.
like you mentioned.
If you want to go on other forums. Go on the CTSVowners forum. You'll see the big boys pushing that blower to its potential. Heck what would they know those are the original vehicles that came equipped with that blower. You'll also see countless let downs of that famous 2.9 blower. Yea turns out they don't like to be spun at say that rated RPM continuous speed.

Btw RealQuick those numbers on your sig with an M6 and turbo are kinda pathetic. You should change your name to NotQuick. Shouldn't you be like in the 1k+hp range? I highly doubt with those numbers you've ever seen a 10 sec pass. I guess you're right you should swap out that hotcam you're probably running.
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http://www.lingenfelter.com/PRI2014s...heet%201.1.pdf
Here's a chart of what LPE suggest.





