ARE Motor is in!
<img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
After a few heat cycles and 150 miles of break-in driving, I've started to do a street tuning. It's been a blast raising the shift points to hit 6800 in second gear. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> First gear is a guess; no traction. The car feels very strong, but my SOTP meter isn't all that accurate after no WOT runs for a couple months, so we'll set that aside; I'll have track times next weekend.
I have my idle now set 900 rpm (the same speed I used for my 218/218 cam) and it is pretty smooth, with only very little lope. My IAC count is still high, so I just need a minor adjustment to the TB idle set screw and I'll be all set. At 1000 rpm in park, the idle is smooth enough that I could pass the car off as having a stock cam to most people.
I've used LS1 edit to set my injectors and dialed in my LTRIMs using the MAF setting (-5% adjustment). I'm running the LTRIMs a bit negative and have my O2s at WOT in the 895 - 910 range; 28* of timing and no KR. Since the heads are milled, I will not bring them down to 870 unless I get a wideband.
The grot headers sound a bit nasty (rasp), so I'll probably add a bullet muffler in the I-pipe or redo the POS Y-Pipe with bullets and a real collector.
A big thanks to Nick for his help and patience on the motor & cam. Every time I talked with him, he was upgrading something as new or better parts became available. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Congrats on getting the car running again. I'm anxious to hear your results next weekend! BTW, your old converter goes in tomorrow as a PT4400. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Dalswon: Drop me a line, We can do a little test & tune on the Cabin John Pwky. Also a bunch of us are going to MIR on saturday. Can you join us?
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What size injectors did you go with? I'm undecided as to whether or not I should change mine right away. I know the stock '98 injectors will support a decent amount of hp, but I'm planning on spinning this motor pretty high... Maybe some SVO 36#'s...
I went with SVO 30lb injectors. I thought about trying a set of 98/01 injectors, but decided for high rpm use I'd rather have the extra capacity. it's not just the HP level so much as the duration that raised my concern. At 6800 rpm the time the injector has to support 400 HP is less than at 6000.
For my set-up, they should be adequate and did not require too big an adjustment to the computer. I had 36lb SVOs with the blower and I was not confident that the tuning (mail order) really dialed them in. However with LS1 Edit, I now realize that I could dial them in. If you spin to 7200 rpm, 36lb injectors may have be a smarter choice.
Patrick

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.






