Opinions on my LS1/TVS1900 Setup

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Jan 25, 2019 | 09:20 AM

stng_96

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From: Marion Illinois

Opinions on my LS1/TVS1900 Setup

I am adding a TVS1900 blower to my LS swapped miata. Car has been fun for a few years but I've got the itch again and I have finally located a GTO TVS1900 to install, should be here early next week.

My current setup:

2002 LS1/T56
stock engine
stock 241's
TSP 228R
1-3/4 Kooks LT's into a straight dual custom 2.5 system with borla mufflers
No EGR/Evap/Emissions of any kind
Made 405 at wheels on Dynojet when tuned

The few questions I have:

-Obviously boost levels vary wildly depending on your setup, but anyone want to take a guess at what boost number I'll be in with the above setup? Likely will run 3.0 front and 1:1 rear cogs. I am wanting to be in the 8-10psi range, and I believe I'll be at or below that.

-Think it will be worth it to change the cam out? I have enjoyed everything about that 228r (228/228, .588/.588, 112) and at 4 degrees overlap I don't think it will perform terribly. I know a cam with a longer exhaust stroke will be better, but for the additional trouble I'm just not sure its worth it.

Jan 25, 2019 | 11:30 AM

ddnspider

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Id leave the cam alone. You should be able to make 10 psi with that setup since they're stock heads. You could consider 317's if you wanted to drop the compression a bit.

Jan 25, 2019 | 12:16 PM

stng_96

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From: Marion Illinois

I'm leaning toward leaving the cam alone too. I'm not overly concerned about the compression, if I need to I'll spray some meth but I'm thinking this setup I can just stay on pump gas.

Jan 29, 2019 | 08:25 AM

stng_96

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220 views and 1 reply? I guess with LS3 parts out there, there just aren't as many ls1 guys doing this kind of thing anymore. Blower gets here today, can't wait to get her on there.

Jan 29, 2019 | 09:28 AM

hellbents-10

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It will run pretty good with that cam in there. Also the overlap will help things with pump gas too. Run it and have fun.

Jan 29, 2019 | 09:40 AM

Gav

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From: UK

Hi,
please could you do me a favour whilst you are installing it? Height of tvs1900 manifold top from valley plate?
btw, did you get it new?
regards
gav

Jan 29, 2019 | 09:45 AM

stng_96

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From: Marion Illinois

Quote:

Originally Posted by Gav

Hi,
please could you do me a favour whilst you are installing it? Height of tvs1900 manifold top from valley plate?
btw, did you get it new?
regards
gav

Sure, only because it would've really helped me if I could have had that info when I was buying! I am going off best interpretation against other engine parts that it will fit my application. I may end up having a blower pulley out of my hood!

No I did not buy it new, honest to god I couldn't stomach the 7k or so for a kit that wasn't actually set up for my application. I found it used and it took about a month to get the seller to sell it to me because it was part of a package deal with a GTO, but he finally did. $4500 to my door, Teflon coated rotors, 8 rib pulley setup, ported snout for 102TB. Should make my little miata scoot!

Last edited by stng_96; Feb 7, 2019 at 10:35 AM.