LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Taking some weight out of EPPs LT1 project car

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Old 01-20-2008, 08:10 AM
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Default A couple of pics









On the bottom left on the last pic you will see the caliper brackets. I will be working on the spindles today.
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-20-2008, 02:13 PM
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Default Update

New manual BMR K-member= +1.72 lbs.
ATI Balancer vs stock= +1.8 lbs.

Power steering system w/fluid= 32.3 lbs.
New flaming river manual rack set up= 15.73 lbs.
total savings in manual= -16.57

A/C compressor= -15.37 lbs.
A/C bracket and idler pulley= -8.00 lbs.
Accumulator and lines= -4.3 lbs.
Condensor= -8.21 lbs.
Washer bottle= -1.69 lbs. -8.23 lbs. when full (It was full when in car)
Crash bar= -16.53 lbs.
Front foam support w/clips= -3.28 lbs.
ABS unit= -12.44 lbs.
Cruise control= -3.01 lbs.
Brake booster= -9.73 lbs.
Replaced single adjustable QA1 struts with double adjustable QA1= +.29 lbs.
Replaced 315 lb. QA1 springs with 300 lb. QA1 springs= +3.76 lbs.
Strange front brakes= -40.9 lbs.
Cut LH spindle= -3.83 lbs.

Total reduction so far= -142.83
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be


Last edited by silver95; 01-20-2008 at 02:22 PM.
Old 01-20-2008, 02:20 PM
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Originally Posted by daniel6718
please post pics of your cut spindles...ive heard this a bunch and its a great free mod but thats kinda dangerous and i wanna see how far you go so i can go a little less maybe save 3-4 pounds pre side




Saved 3.83 on the left side. Not really dangerous, the only thing you don't want to do is run these brakes on the street on a daily basis.
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-21-2008, 02:48 PM
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you can get a ton of weight out of the inside of the dash as well.That passanger airbag is heavy and all the duct work and junk in there is heavy too.I also took out the heater core and hoses as well as the heaterbox is heavy too.I have to attack my doors in the spring also lots of extra steel I can cut out of there also.my goal is 3000 lbs and 3200 with me in it for the spring.Its like free rwhp
Old 01-21-2008, 06:44 PM
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Originally Posted by Davey J
you can get a ton of weight out of the inside of the dash as well.That passanger airbag is heavy and all the duct work and junk in there is heavy too.I also took out the heater core and hoses as well as the heaterbox is heavy too.I have to attack my doors in the spring also lots of extra steel I can cut out of there also.my goal is 3000 lbs and 3200 with me in it for the spring.Its like free rwhp
LOL....I bought this thing new and I feel like my wife is getting raped when I pull these parts out. As each year goes by I tear into it more...maybe in a couple I'll go at it like you.
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-21-2008, 09:18 PM
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After looking at those pics, I can totally see why you can lose so much weight with those Strange brakes. Is there such a thing as aftermarket spindles? If not, couldn't someone fab up some lightweight ones?
Old 01-22-2008, 05:17 AM
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Originally Posted by Evaporate
After looking at those pics, I can totally see why you can lose so much weight with those Strange brakes. Is there such a thing as aftermarket spindles? If not, couldn't someone fab up some lightweight ones?
I was at the shop yesterday looking at the spindles on the LS F-body cars..those are the ones us LT guys need! They have two little tabs that hold the caliper on. They have very little cutting to do to put the Strange brakes on.
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-23-2008, 04:51 AM
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Originally Posted by silver95








On the bottom left on the last pic you will see the caliper brackets. I will be working on the spindles today.
What is really amazing about looking at these pic's of your '95 Formula is that the engine has never been out of the car, never rebuilt, nothing! It practically looks new! Bob
Old 01-23-2008, 06:37 AM
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Replaced BMR K-member with one for manual rack= +1.72 lbs.
ATI Balancer vs stock= +1.8 lbs.

Power steering system w/fluid= 32.3 lbs.
New flaming river manual rack set up= 15.73 lbs.
total savings in manual= -16.57

A/C compressor= -15.37 lbs.
A/C bracket and idler pulley= -8.00
Accumulator and lines= -4.3 lbs.
Condensor= -8.21 lbs.
Washer bottle= -1.69 lbs. -8.23 lbs. when full (It was full when in car)
Crash bar= -16.53 lbs.
Front foam support w/clips= -3.28 lbs.
ABS unit= -12.44 lbs.
Cruise control= -3.01 lbs.
Brake booster= -9.73 lbs.
Replaced single adjustable QA1 struts with double adjustable QA1= +.29 lbs.
Replaced 315 lb. QA1 springs with 300 lb. QA1 springs= +3.76 lbs.
Strange front brakes= -40.9 lbs.
Cut LH spindle= -3.83 lbs.
Cut RH spindle= -3.69 lbs.

Total reduction so far= -146.52

I talked to tech rep from Weld Racing, the Magnum PRO 1 piece 3.5" wheel only weighs 7.5 lbs. Combined with MT ET fronts you get a total tire/wheel weight of 20.5 lbs. My current 5.5" Weld XPs with MT Sportsman front runners weigh 32.6 lbs. I will save approximately 24 lbs. just in front wheels/tires. Guess what, my XPs from the front are now for sale!
Old 01-23-2008, 07:25 AM
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thnaks for the pics....good job sofar...
Old 01-23-2008, 06:19 PM
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Originally Posted by Exotic Performance Plus
What is really amazing about looking at these pic's of your '95 Formula is that the engine has never been out of the car, never rebuilt, nothing! It practically looks new! Bob
That is the crazy part. Mine doesn't even look nearly that clean and it's a 98.
Old 01-23-2008, 11:50 PM
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Originally Posted by Beaflag VonRathburg
That is the crazy part. Mine doesn't even look nearly that clean and it's a 98.
Thanks, I tell the maid to clean her every day!
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-24-2008, 05:04 PM
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Originally Posted by silver95
Replaced BMR K-member with one for manual rack= +1.72 lbs.
ATI Balancer vs stock= +1.8 lbs.

Power steering system w/fluid= 32.3 lbs.
New flaming river manual rack set up= 15.73 lbs.
total savings in manual= -16.57

A/C compressor= -15.37 lbs.
A/C bracket and idler pulley= -8.00
Accumulator and lines= -4.3 lbs.
Condensor= -8.21 lbs.
Washer bottle= -1.69 lbs. -8.23 lbs. when full (It was full when in car)
Crash bar= -16.53 lbs.
Front foam support w/clips= -3.28 lbs.
ABS unit= -12.44 lbs.
Cruise control= -3.01 lbs.
Brake booster= -9.73 lbs.
Replaced single adjustable QA1 struts with double adjustable QA1= +.29 lbs.
Replaced 315 lb. QA1 springs with 300 lb. QA1 springs= +3.76 lbs.
Strange front brakes= -40.9 lbs.
Cut LH spindle= -3.83 lbs.
Cut RH spindle= -3.69 lbs.

Total reduction so far= -146.52

I talked to tech rep from Weld Racing, the Magnum PRO 1 piece 3.5" wheel only weighs 7.5 lbs. Combined with MT ET fronts you get a total tire/wheel weight of 20.5 lbs. My current 5.5" Weld XPs with MT Sportsman front runners weigh 32.6 lbs. I will save approximately 24 lbs. just in front wheels/tires. Guess what, my XPs from the front are now for sale!
Since this car was deadly consistent, running 11.31/11.32, it will be interesting to see what the weight reductions yields in et. Bob
Old 01-27-2008, 12:51 PM
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Default update with rear race brakes

Replaced BMR K-member with one for manual rack= +1.72 lbs.
ATI Balancer vs stock= +1.8 lbs.

Power steering system w/fluid= 32.3 lbs.
New flaming river manual rack set up= 15.73 lbs.
total savings in manual= -16.57

A/C compressor= -15.37 lbs.
A/C bracket and idler pulley= -8.00
Accumulator and lines= -4.3 lbs.
Condensor= -8.21 lbs.
Washer bottle= -1.69 lbs. -8.23 lbs. when full (It was full when in car)
Crash bar= -16.53 lbs.
Front foam support w/clips= -3.28 lbs.
ABS unit= -12.44 lbs.
Cruise control= -3.01 lbs.
Brake booster= -9.73 lbs.
Replaced single adjustable QA1 struts with double adjustable QA1= +.29 lbs.
Replaced 315 lb. QA1 springs with 300 lb. QA1 springs= +3.76 lbs.
Strange front brakes= -40.9 lbs.
Cut LH spindle= -3.83 lbs.
Cut RH spindle= -3.69 lbs.
Strange master cylinder vs stock= +1.97 lbs.
Old rear brakes= 23.10 lbs. each
Wilwood race brakes= 11.37 lbs. each
Total savings in rear brakes= -23.46 lbs.

Total reduction so far= -168.01

Just a side note, I saved 5.00 lbs. on each rear rotor alone. That is alot of rotating mass! I am also going to delete all the emergency brake equipment and I am sure the aluminum spool is going to save alot. This reduction total also doesn't include the front wheels and tires I will be getting, another -24 or so. I ordered some aluminum intercooler tubing to replace some of ATI's steel, that will be weighed when done.
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-27-2008, 06:19 PM
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Nice work measuring everything. I'm doing some of the same stuff now. I just hate the fact that I had to add the cage. I don't want to know how much weight I just added.
Old 01-27-2008, 08:34 PM
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Originally Posted by jakesz28
Nice work measuring everything. I'm doing some of the same stuff now. I just hate the fact that I had to add the cage. I don't want to know how much weight I just added.
I estimated my molly 6point to be 50lbs but yeah I understand what you mean.I added th400 and the 12bolt as well both are heavy but I need them
Old 01-28-2008, 10:00 AM
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Davey J...how do you like your Kooks headers?
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-28-2008, 02:17 PM
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Originally Posted by silver95
Davey J...how do you like your Kooks headers?
I like them however I have only used them on so I have nothing else to compare them to.The car is loud considering I have mufflers but it sounds good and it seems to make decent power.When I shift 3rd it feels like a launch
Old 01-31-2008, 06:33 PM
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Originally Posted by Davey J
I like them however I have only used them on so I have nothing else to compare them to.The car is loud considering I have mufflers but it sounds good and it seems to make decent power.When I shift 3rd it feels like a launch
If you get some engine bay pics post them up! I would like to see them.



I sent the spindles to Jet Hot for coating, I'll get some pics of the finished front brake set up when done. With some new upper a-arms from BMR, this front end will look new again.

I had to order a different hat for the rear Wilwood brakes, the 12 bolt kit from Moser had a 2.81 offset and these f-bodys have a 2.66. I'll also get pics of these when done.

She is coming together and the engine should be running again this weekend. I would like to thank Josh at Procharger for sending some new tubing for my intercooler set up, changing things around to ATI's new piping.

Ultimate goal is in the 10s with this set up. I'll be happy to pull the engine to go faster then.
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95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Old 01-31-2008, 09:20 PM
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Love the car. Interested to see how far you can push the stock engine.


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