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12-07-2025, 06:04 PM #1171Administrator
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- Shaun
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- 1994 Formula
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generally 15atdc or less for any turbo boost. supercharger is different because the exhaust is not restricted. na cams usually play decently well with superchargers, turbos are where the headache comes in. I do have another cam spec'd if i end up swapping, be like 239/243 .600/.600 114lsa
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1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
10.16 @ 138mph. Shooting for 9.99 for Frank/Gail Cahall!
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12-07-2025, 07:36 PM #1172LTX Regular
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- Sep 2015
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- Brandon++S
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- 1997 camaro z28
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- Alabama
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Good info, thank you! I'm running 227/235 .565/.579 109 lsa. I have a 6psi supercharger sitting under workbench and thought about throwing it on. Thanks again
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12-07-2025, 08:28 PM #1173Administrator
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- Shaun
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- 1994 Formula
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it'll be alright, you'll lose a little boost thats all. 6psi on a stock engine will be like 4psi on a healthy engine that breathes.
please dont judge my welds. they suck, and this Hobart 0.025 wire kept kinking ON THE ROLL. wastegate merge is mocked up. hotside is burned together less both header side vband flanges. ive learned alot so far.


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1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
10.16 @ 138mph. Shooting for 9.99 for Frank/Gail Cahall!
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12-08-2025, 01:28 AM #1174LTx Guru
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- Apr 2013
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- Fred
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- 1994 Formula - SOLD
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- Central NJ
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Wow…. into the Twilight Zone. Just don’t have any of the plumbing sticking out of the hood. Keep the “sleeper” look.
😀😀😀😀😀😀😀😀😀😀😀😀😀😀SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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12-08-2025, 09:03 AM #1175
Make sure you have clearance to get a ratchet on teh crank bolt for setting valves etc.
Correlation does not imply causation.
Una salus victis nullam sperare salutem
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12-08-2025, 09:21 AM #1176Administrator
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- Shaun
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- 1994 Formula
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LTX Hoarder
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
10.16 @ 138mph. Shooting for 9.99 for Frank/Gail Cahall!
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12-08-2025, 09:24 AM #1177Administrator
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- Shaun
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- 1994 Formula
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I really wanted to keep it hidden except the intercooler. but these damn as&m headers, that #1 primary comes out real wide then goes back to the collector, I can barely fit a 3" tube thru there. I may do what @shownomercy sent me a pic of, 4" dump tube to bumper exit with a boost actuated cut out, and 3" y off of it back to the exhaust. quietish until boost
Sent from my SM-S938U using TapatalkLTX Hoarder
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
10.16 @ 138mph. Shooting for 9.99 for Frank/Gail Cahall!
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12-08-2025, 06:16 PM #1178LTX Regular
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- Sep 2015
- Name
- Brandon++S
- Vehicle
- 1997 camaro z28
- Location
- Alabama
- Posts
- 213
Better welds than I could do. It doesn't have to look pretty to be fast

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12-08-2025, 06:18 PM #1179Administrator
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- Shaun
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- 1994 Formula
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a grinder and paint make me the welder I aint!
LTX Hoarder
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
10.16 @ 138mph. Shooting for 9.99 for Frank/Gail Cahall!
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12-10-2025, 10:32 AM #1180
Dam you get alot done fast. I don't see nothing wrong with those welds, metal looks pretty melted together to me. I do gorilla welds, grinder and paint too. LOL
Nolan'97 SS SLP,T56, Spec stage 2+ clutch,385 stroker,AFR210,XFI292,Moser 12 bolt eaton posi 4.10's. NO traction til top of 3rd gear.
'57 Chevy 3100 p/u LT1/T56
Wife's '94 Z28 has been sold.
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