Next step up from SY4000?
Thread Starter
Launching!
Joined: Nov 2001
Posts: 294
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From: Dallas, TX
Next step up from SY4000? I bought the SY4000 because 99% of my racing is on the street, and I have 3.73 gears...
but I already feel like I want more...
just curious as to what would be considered a next step up...
for a car with 245 DR, so too much STR is not a good thing
looking for mostly "from a jump" gains
thanks for any advice
but I already feel like I want more...
just curious as to what would be considered a next step up...
for a car with 245 DR, so too much STR is not a good thing
looking for mostly "from a jump" gains
thanks for any advice
Re: Next step up from SY4000? A Yank Pro Thruster 4400 is the next step up. Don't let the higher STR fool you into thinking it's not easy to launch on the street. It is quite manageable to launch and it will KILL the SY4000 from a roll. I swapped from the SY4000 to a PT4400 a few years ago and never regretted it. The Pro Thruster is THAT good.
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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.
Re: Next step up from SY4000? Next step up is a YTP 4400. At that stall you're loose enough to step into throttle on the street; it requires just a little more care than what you've got.
The gains will be mostly from a roll. If you don't mind the looseness, Mike could swap the YTP 4400's stator and drop the STR down to around 2.2 This would increase the midrange gain, shift extension, and efficency.
For a bolt-on car or mild cam car, I wouldn't go any higher stall.
The gains will be mostly from a roll. If you don't mind the looseness, Mike could swap the YTP 4400's stator and drop the STR down to around 2.2 This would increase the midrange gain, shift extension, and efficency.
For a bolt-on car or mild cam car, I wouldn't go any higher stall.
Thread Starter
Launching!
Joined: Nov 2001
Posts: 294
Likes: 0
From: Dallas, TX
Re: Next step up from SY4000? I am planning on putting a cam in within the next month or two, and obviously getting new springs, rods, and retainers in....Is that a must for thet high if a stall ( the valvetrain )?
also, what RPMs would I be at during up-shifts at WOT?
once again, thanks for all the help!
also, what RPMs would I be at during up-shifts at WOT?
once again, thanks for all the help!
Re: Next step up from SY4000? [quote] Is that a must for thet high if a stall ( the valvetrain )?
<hr></blockquote>
<img src="images/icons/confused.gif" border="0">
[quote] also, what RPMs would I be at during up-shifts at WOT?
<hr></blockquote>
5200 - 5400 is a pretty good estimate.
[ January 20, 2002: Message edited by: Ragtop 99 ]</p>
<hr></blockquote>
<img src="images/icons/confused.gif" border="0">
[quote] also, what RPMs would I be at during up-shifts at WOT?
<hr></blockquote>
5200 - 5400 is a pretty good estimate.
[ January 20, 2002: Message edited by: Ragtop 99 ]</p>
Thread Starter
Launching!
Joined: Nov 2001
Posts: 294
Likes: 0
From: Dallas, TX
Re: Next step up from SY4000? Sorry if that was confusing..I just meant is it a good idea to put have the upgraded valvetrain for a converter that revs that high?
Hope that makes more sense...
Alex
Hope that makes more sense...
Alex
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Joined: Nov 2001
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From: Baton Rouge, LA
Re: Next step up from SY4000? Tonight cruising around in my Camaro on 15 inch drag radials (good tires, right pressure) from a 35 mph punch my car got sideways. Pretty cool--try the tp4400 =)
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Re: Next step up from SY4000? Super: The valvetrain needs to be upgraded because of the stress from the higher lift and faster ramps of the cam combined with the fact that you will spin the motor a few hundred rpm higher because of the increased top end power. The converter has no impact on that decision.