Post divorce looking for more power
And thanks, I thought it would grab attention.
My buddies stock Hellcat Challenger will hang with a local guys SN95 with a built terminator engine, Whipple blower, manual car which he claims is nearly 800whp, so you'll need to make some jam.
The challenge is that SBE LS1 of yours, popular opinion is once you go over 600whp its basically a grenade with the pin half pulled.
I made 700whp with my last SBE LS1 car for years which I credit largely due to the tuner (Pat G.), that would be my goal if I was you because it is very doable and easy without getting too crazy.
My old combo was an SBE LS1 on 14 lbs. of boost pump gas only, 317 CNC heads, LS6 intake w/ stock TB, mystery turbo cam, deka 80lb. injectors, stock fuel system with twin pumps in the tank with one pump on a Hobbs switch so a very simple setup.
Pony up for a decent twin disk because you'll end up there anyway, I ran the Monster S Series twin disk and it was a fantastic piece, stock pedal effort and drivability plus its rebuildable, singles in the 700whp range tend to be harsher.
You'll need to build the trans at some point so start saving for a used built unit or save up for a Magnum would be the move, same with the rear end, the Moser 12 bolt isn't bad, just tends to whine so I'd look for a 9" or an S60 if that might bother you.
Don't forget the driveshaft, the factory aluminum one tends to blow apart with decent horsepower and traction, there's a steel one that can be found in the V6 cars iirc.
Procharger claims the D1SC is good to 925chp so I'd focus on the things above since the limiting factor will be the SBE LS1 anyway, then upgrade the blower once the foundation is set.
If you can run E85, that would be a big help or if you're limited to pump gas like I am, a methanol injection kit might be worth considering.
Just my $.02.
I ran a sbe ls1 with stock heads at 14 psi for a couple years and never did hurt it on pump gas. I sold that short block when I knew I wanted more. It looked perfectly fine when I opened it up.
A d1x is going to make more power with lower IAT than a D1sc which helps. If you can run e85 that sbe will be fine at 700 rwhp.
I run e85 and meth but if I could only run one or the other, I would choose e85 over meth every time.
Keep things cool enough with e85 or meth and you will not have any issues with the ring gaps either.
Nothing is infallible plenty of people break built motors even with good tuning, but it should hold up to 700 rwhp for a while with good fuel and low IAT's.
You are also at least 600 pounds lighter than a hellcat.
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I found a lq4 for $600 with 220k miles I'm really debating on grabbing and building from the pistons up or just using that money instead and get my cam and valve train going in the ls1. I went out again last night and lost to some crazy bmw so I'm a little butt hurt at the moment lol
as far as rear, driveshaft, trans, etc go i think i would be the type to run it till it breaks kind of guy.
oh also cool thing is for the first time in my life I have access to e85, it's like 5 miles away if even and right in the heart of where all the cars come out to play on weekends so totally could run it with ease of access
I found a lq4 for $600 with 220k miles I'm really debating on grabbing and building from the pistons up or just using that money instead and get my cam and valve train going in the ls1. I went out again last night and lost to some crazy bmw so I'm a little butt hurt at the moment lol
as far as rear, driveshaft, trans, etc go i think i would be the type to run it till it breaks kind of guy.
oh also cool thing is for the first time in my life I have access to e85, it's like 5 miles away if even and right in the heart of where all the cars come out to play on weekends so totally could run it with ease of access
Even a used T56 is incredibly expensive these days, very possible to break one and damage the case, then instead of just rebuilding a working unit, you may now be looking at $2,000 just for another working stock unit only to then have it built.
Second is the diff, I knew a guy who thought the same only his diff broke, locked up and he crashed the car.
Lastly is the driveshaft, I've seen those break and damage both the diff and the trans and even sometimes the engine.
Keep the power down and make the tires are spinning for now.
Watch the classifieds for a used diff and stage 2 T56 or Magnum, I see them pretty regularly.
Source a steel drive shaft from a V6 car or pony up and get one from someone, my MWC aluminum unit is really nice.
Even a used T56 is incredibly expensive these days, very possible to break one and damage the case, then instead of just rebuilding a working unit, you may now be looking at $2,000 just for another working stock unit only to then have it built.
Second is the diff, I knew a guy who thought the same only his diff broke, locked up and he crashed the car.
Lastly is the driveshaft, I've seen those break and damage both the diff and the trans and even sometimes the engine.
Keep the power down and make the tires are spinning for now.
Watch the classifieds for a used diff and stage 2 T56 or Magnum, I see them pretty regularly.
Source a steel drive shaft from a V6 car or pony up and get one from someone, my MWC aluminum unit is really nice.
I just got the rear wheels swapped for the c5 18s, running nitto 295/35 and this thing still just spins the hell out of them and the back end SLIDES like crazy. Maybe I'm just romping it to hard because with the traction control on it definitely doesn't spin like that anymore. Already been doing my work on reading about lowering, rear lca upgrades and relocation, etc. When grip is resolved I figure that's when I really start risking everything else you mentioned, at least a lot more so than I currently do.
I am definitely not use to dealing with the supporting mods that come with this level of power let alone adding to it. If I could be safely, for me and the car, be at north of 600hp or close to it I think I would be happy lol.
I just got the rear wheels swapped for the c5 18s, running nitto 295/35 and this thing still just spins the hell out of them and the back end SLIDES like crazy. Maybe I'm just romping it to hard because with the traction control on it definitely doesn't spin like that anymore. Already been doing my work on reading about lowering, rear lca upgrades and relocation, etc. When grip is resolved I figure that's when I really start risking everything else you mentioned, at least a lot more so than I currently do.
I am definitely not use to dealing with the supporting mods that come with this level of power let alone adding to it. If I could be safely, for me and the car, be at north of 600hp or close to it I think I would be happy lol.
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I just got the rear wheels swapped for the c5 18s, running nitto 295/35 and this thing still just spins the hell out of them and the back end SLIDES like crazy. Maybe I'm just romping it to hard because with the traction control on it definitely doesn't spin like that anymore. Already been doing my work on reading about lowering, rear lca upgrades and relocation, etc. When grip is resolved I figure that's when I really start risking everything else you mentioned, at least a lot more so than I currently do.
I am definitely not use to dealing with the supporting mods that come with this level of power let alone adding to it. If I could be safely, for me and the car, be at north of 600hp or close to it I think I would be happy lol.
My stock T56 lived behind my 600whp turbo setup for about two years before it started popping out of third on decel, that's a telltale sign that things are getting worn out.
Don't bang shift it or reef on it, keep the harder tires on it for now and it'll live for a bit.
Those spindly stock 7.5" diffs are way weaker, they'll break with stock HP if you abuse them.
You'll just have to learn to apply judicious amounts of throttle under power, my last car was a T56 car at about 700whp and with the Nitto NT05's, you had to be on point with the throttle application.
Hence the guy I sold the car to wadded it up in less than a month.
Also, definitely what Bob mentioned about sub-frame connectors too, totally forgot about those.
The UMI spider brace works really well and ties everything together nicely.
Go ahead and do the items you mentioned, just be kind to the trans/diff and it'll help.
Suspension mods will definitely help, an aftermarket diff will have three to four different spots for LCA mounting which will really help.
A better torque arm would also help.
You'll be alright, just keep a sticky tire off it for now, if the tires are spinning then nothing is breaking immediately lol.
The car has the Tick Performance Stage 2 blower cam. its 227/243 .625/.615 LSA 115+4. I love the cam and it has a great sound, good bit of chop for 115 LSA. <---Id recommend it. with all the supporting valvetrain & pushrod upgrades.
I have the Monster twin disc LT1-S with the tick master and it feels very stock. Well as stock as anything with the Tick Master 2/3rds ish pedal travel when adjusted.
The 9" does have a whine to it but its not that annoying.
Dont forget some head studs if you plan on really cranking up the boost along with the sub frame connectors. if you plant all of it you want to keep the car from twisting too much.















