Still pulling away like a freight train supercharged 944 LS1

Hey gents. I want to step in here & say you guys keep at it. Any of you that are still tinkering, or on the fence about a 944 Hybrid ~ get out there & make it happen.

I am over 10 years now with mine - and its still what some call their favorite car that I have.

I have a lot of fun in this car, sneaking up on unsuspecting "fast" car owners and then playing with them like a cat-toy. You cant beat that feeling of debauchery you get. Go FINISH YOUR CAR (or make plans to start one).  It can be a lot of work, but its worth the efforts.

Do yourself a favor & join in the fun.

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Great stuff man.

Andy

what kind of hood crowl and any videos to motivate others :O ? sweet looking ride !

You know way back when a guy was selling those hoods. Nice clean bulge that gave me a start towards what I needed to fit the blower pulley. I cut it up & added more clearance then viola, my hood was born.

Better than good quality, excellent hinge & latch areas. Pretty solid fit too.

Vids? Hell yes, 10 years of 'em:

The real question... 10 years with a blown LS1, still on the same 951 gearbox?

superman22x wrote:The real question... 10 years with a blown LS1, still on the same 951 gearbox?  

Yes sir. Back in the day I rem-polished the internals, installed a Quaife with axles from a German tank (GKN racing axles). Its still in place - in one piece - and I use it as such. I just don't drive it like I hate it.

That's confidence inspiring! My LS3 has an NA transaxle still... Definitely needs a 951 transaxle soon.

Can you tell me the compression of your motor. How much boost are you pushing?

Stock 2002 Pontiac Trans Am WS6 LS1, which I believe is 10.0:1. I started with only 6lbs of boost and left it that way for years (road racing mainly). But then (years ago) I swapped the pulley to a smaller size & brought the boost up over 10PSI now (half-mile events mainly).

It does not seem to care. But again, I don't beat on it like a loon.

Thank you. From what I have read the concensus is max 13 psi. At that compression. They said for long term running with great reliability stay at 8 to 10 a's a good safe area. This info is from varoius magazine tests that i read on line about boosting a LS 3 .Did you notice a big difference when you uped the boost to 10

superman22x wrote:The real question... 10 years with a blown LS1, still on the same 951 gearbox?  

A 951 transaxle can be ruined with far less HP. I let a friend drive my car an he spun third gear on the pinion shaft. My car has around 350 RWTQ much less than Michael B's. He was sidestepping the clutch and shifting very aggressively. So, don't drive like an idiot an the transaxle will be fine.

kevin924kevin wrote:Thank you... Did you notice a big difference when you uped the boost to 10

The car Dynoed at 550 prior to the small pulley, I may have added fifty more with the change. It nearly overwhelms the chassis at 400 honestly (sideways at any speed right?), so anything up there over 500 is just for giggles. It was a bunch of power before the small pulley, an it is just more bunches after.

Its noticeable to me sure, but anyone else would say its just more sideways.

Arthropraxis wrote:

superman22x wrote:The real question... 10 years with a blown LS1, still on the same 951 gearbox?  

A 951 transaxle can be ruined with far less HP. I let a friend drive my car an he spun third gear on the pinion shaft. My car has around 350 RWTQ much less than Michael B's. He was sidestepping the clutch and shifting very aggressively. So, don't drive like an idiot an the transaxle will be fine.

Can I have a Amen!

I have had pals drive my stuff and beat on my cars thinking they are "the man." I don't let that happen anymore.

I now say to them "Hey, driving this car at 75% is more car than you have ever had before, you don't need to get every little bit out of it." 75% of it is plenty 'ya know? Its that or I keep 'em out of it.

Arthropraxis wrote:

superman22x wrote:The real question... 10 years with a blown LS1, still on the same 951 gearbox?  

A 951 transaxle can be ruined with far less HP. I let a friend drive my car an he spun third gear on the pinion shaft. My car has around 350 RWTQ much less than Michael B's. He was sidestepping the clutch and shifting very aggressively. So, don't drive like an idiot an the transaxle will be fine.

Oh absolutely, it's amazing how being off by a couple hundred RPM and dropping the clutch can add more than a couple hundred ft-lbs of inertia torque!

Well guess what?

After years of use (and I mean YEARS), I busted up the gearbox.

Admittedly I ham-fisted a shift, then jumped on it while wearing a set of 888's on super porous grooved cement. It spit a chunk of gear out and I had to pull-out the box to check on it. I got the sliver of gear found & out then swapped in a AGR box with hardened Input Shaft, all bearings WPC Treated, new AGR Ring and Pinion (WPC treated), Albins Short 3-5 Gears (WPC Treated), and trying a Custom Ramped OS-Giken super lock differential.

I am going to rebuild the old box as I have a lot of time into it (rem-polished internals), plus I like the Quaife diff, and the super high fifth gear that I put in for highway cruising.

Anyhow, 58 years old here, still driving the thing. Keep at it you guys!

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Any more pictures of the engine and where did you get that front bonnet with the vent I want one hehe

matt889 wrote:Any more pictures of the engine and where did you get that front bonnet with the vent I want one hehe

I have been driving this thing since 2003? I probably have 3000 photos.

I did that vent myself. It is functional, as my mounting for the intake is right behind it. For the last 20 years I have been able to do bit after bit like that, and actually appreciate you taking notice.

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Same here my intake passes there got more pictures of the header panel you made? Mine was dented before I bought the car so it might as well be chopped up for good intake temps!

I will get some more detailed shots of the panel shortly. I used a Volvo grill piece for the opening, so it came out looking OEM like. The car is up on the lift (finishing the new gearbox swap) so... Very soon!

You got a Instagram with pictures hehe?

matt889 wrote:You got a Instagram with pictures hehe?

At 58 I am lucky to have more than a flip phone.

Whew, that's going to be an incredibly short geared transmission!

That AGR ring and pinion combined with the Albin's low 3-5 gearsets will be much shorter geared than even the 944S2 box I use in mine. And I only have a 350hp LT-1.

mad respect on that beast you have but question on how lightly i have to go with my soon to be rolling frankenbuild.

i'm just running a 5.7L LS1 with 224/222 112 lobe separation as NA. connected to a barely used 5R LSD transaxle with cooler and rebuilt torque tube.

is it still pushing the transaxle to hard if say while rolling and you clutch spiritedly and shift and once pedal immediately WOT.

This still classified as driving like an idiot or can the transaxle handle this much giggles.

i know the hard fast rule of throttle once rolling, no hole shots or consider the transaxle exploded; but curious how baby'ing it needs.

probably gonna be 385 to the wheel i am guessing with the cam and 2.5" to flowmaster 3" y pipe and then to my 350 borla s

crazy machine you got there.

Rob44 wrote:Whew, that's going to be an incredibly short geared transmission!

That AGR ring and pinion combined with the Albin's low 3-5 gearsets will be much shorter geared than even the 944S2 box I use in mine. And I only have a 350hp LT-1.

Yeah, I am pretty excited about all that tho' - I am totally into trying something new. I luv-luv a short ratio box. And my prior 200MPH fifth was rarely used for that anyhow.

Gutterboy wrote:
is it still pushing the transaxle to hard if say while rolling and you clutch spiritedly and shift and once pedal immediately WOT.

This still classified as driving like an idiot or can the transaxle handle this much giggles.

i know the hard fast rule of throttle once rolling, no hole shots or consider the transaxle exploded; but curious how baby'ing it needs.

probably gonna be 385 to the wheel i am guessing with the cam and 2.5" to flowmaster 3" y pipe and then to my 350 borla s - crazy machine you got there.

I always had the weakest link as the tires. I would spin the tires up into third - but thought of that as my "governor" keeping me from putting any strain on the gearbox. I think you will be looking good at your power level, but it has to be said that its the driver shenanigan's that mess up the system. You can see that for years I brought the heat, just drove smart. Its not a Mustang, so treat it with respect is all. That & have a tire on there that spins easily

You wont need to baby it. Still can have loads of fun without a nagging feeling.

i switched up to 17" boxster turbo twist wheels with 245's on the back so should still be skinny enough to spin with the extra power as my "governor".

i figure romping on the throttle with spirited clutch shift but not full romp till clutch out should be a good limit of getting on it!