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Mikey303LSZ

A big thank you - 240 LS Conversion

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Beautiful Colorado weather today.  Got the car out and logged 60 miles.  Was driving by a gravel yard so I decided to pull in to check the weight of the car - I've always wondered but never verified.  The scale read 3040 lbs with me and my wife.  I decided to drive by the local landfill on the way home so I checked the weight there too - 3020 lbs. Subtract my wife's and my weight and the car is ~2710 lbs +/-20. 

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She seemed good with the drive and checking the weight.  Got to say I'm pretty lucky because she's supportive of the car hobby/therapy.  She was the first one to mention she weighs 115lbs and I make-up the balance!  Her thought is if I want a faster car I better loose some weight! 

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During the water pump R&R "while I was at it" I installed a TexasSpeed 224 cam, LS7 lifters, LS2 heads, matching springs, retainers, push rods and updated the problimatic LS1 oil pump with a Melling.  My intent was to do my own tuning but ran out of time.  I took it in for a dyno tune - ~340HP at the wheel.  Not too bad for a cobbled car/engine.  I suspect the cam/heads added 60 to 75HP making it a wanna be an LS6 with a slightly larger cam.

 

Need to get the car on a Dyno and get it tuned.  I'm betting you'll find another 50-70 HP.  My totally stock '98 LS1 dynoed at 311 HP on a single 2.5" exhaust the first time out.  My son's 2000 LS1 came in around 380 HP.

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I believe the turbo vs non-turbo R200s are the same except for gear ratios.  I have a 3.54 ratio which (according to the internet) is from a turbo vehicle.  It didn't have limited slip so I added the Phantom Grip. 

 

So far it's holding up well after a few 1/4mile runs a day of road racing and multiple burnouts.  I don't have sticky tires or a manual transmission making it more forgiving on the diff.

 

 

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The Z31 LSD R200 had a 3.70:1 ratio.

Interestingly the Z32tt had a 3.69:1 R230 while the NA version had an R200 with about a 4:10:1 ratio.

The S130 NA had a 3.90:1 R300 while the 280Z manual had a 3.54:1 R200.. If I remember right the S130 turbo had a 3.54:1 R200.

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Wasn't too happy with the inline fuel pump I orginally installed so I picked up an OEM tank from Craigslist, cut the top out, bought a Tanks, Inc. kit and installed a 400lph in tank pump.  I found a steel utility cover from Grainger, modified it and welded it into the body - if the pump fails I can remove it from the top w/o dropping the tank.  I ran -8 to and from a C5 Corvette filter/regulator. 

 

Last month I took the car on 2016 PowerTour for a total of 3500+ miles door to door - No problems.  It ran three 1/4mi. passes in BayTown, TX without fuel starve.

 

I'm really happy with this setup - it's nice and quiet with no fuel starve issues during accelleration, braking or hard cornering. 

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