How many of you have a modded C4?
04-19-2014, 09:19 PM
#21
Melting Slicks
Body update to 91-96.
Coilovers.
Intercooled vortec supercharger, 10 psi boost.
Long tube headers, free flowing exhaust.
Adjustable Fuel Pressure Regulator, bosch 111 injectors.
J55 Brakes and Hawk HP Plus brake pads.
383 4 bolt mains, forged steel crank ,forged steel rods, forged pistons.
Coilovers.
Intercooled vortec supercharger, 10 psi boost.
Long tube headers, free flowing exhaust.
Adjustable Fuel Pressure Regulator, bosch 111 injectors.
J55 Brakes and Hawk HP Plus brake pads.
383 4 bolt mains, forged steel crank ,forged steel rods, forged pistons.
04-19-2014, 09:41 PM
#22
Le Mans Master
Mods
Pete Kane 383 Stroker, Dart 180cc Pro 1 heads..Crane Gold 1.6 alum rockers..Erson 218/226/112 custom grind cam...Mega Ported Plenum...Accel high flow runners...Edelbrook High flow Intake..24 lb Bosch III injectors...Stage 2 700r4 trans...EGR and AIR Delete... Dewitts Radiator + Fan...Hooker headers...Blowerworks MAF sensor......WW
Pete Kane 383 Stroker, Dart 180cc Pro 1 heads..Crane Gold 1.6 alum rockers..Erson 218/226/112 custom grind cam...Mega Ported Plenum...Accel high flow runners...Edelbrook High flow Intake..24 lb Bosch III injectors...Stage 2 700r4 trans...EGR and AIR Delete... Dewitts Radiator + Fan...Hooker headers...Blowerworks MAF sensor......WW
Last edited by WW7; 07-29-2015 at 05:18 AM.
04-20-2014, 12:10 AM
#23
Burning Brakes
Working on my '88 now. Mods are as follows:
Speed Pro cam p/n 1062R-304 intake/287 exhaust Adv Dur, Duration @.050 220 intake/231 exhaust, Valve Lift .468 intake/.480 exhaust, Lobe C/L 110
1.5 roller-tip rockers
Double-roller timing chain
Hedman Elite coated LT headers
Stage III ported factory TPI base, runners and plenum
Custom chip
D.U.I HEI distributor
Removed 'frisbee'
Muffler eliminators
Later,
Lee
Speed Pro cam p/n 1062R-304 intake/287 exhaust Adv Dur, Duration @.050 220 intake/231 exhaust, Valve Lift .468 intake/.480 exhaust, Lobe C/L 110
1.5 roller-tip rockers
Double-roller timing chain
Hedman Elite coated LT headers
Stage III ported factory TPI base, runners and plenum
Custom chip
D.U.I HEI distributor
Removed 'frisbee'
Muffler eliminators
Later,
Lee
04-20-2014, 12:29 AM
#24
Racer
1988 Z51
No emissions, American Racing Headers/Exhaust, Stage 3 Intake port, Tune - 300/345
Building a 383 for the car as we speak, all forged lower end, SCAT Crank, TRW Flat tops.
No emissions, American Racing Headers/Exhaust, Stage 3 Intake port, Tune - 300/345
Building a 383 for the car as we speak, all forged lower end, SCAT Crank, TRW Flat tops.
Last edited by S S0DEN; 04-20-2014 at 12:33 AM.
04-20-2014, 12:57 AM
#27
Max G’s
Forged 406 w high flow TPI. Putting down @ 380 rwhp/ 450 rwtrq, modded trans, suspension, and now on a diet, working on losing 350lbs. Where does it end? 
04-20-2014, 08:52 AM
#28
Race Director
Most of the time it doesn't. 
'85 4+3
Hooker headers, B&B cat back, cut air filter lid, Taylor wires, J55 front brakes, and 17" ZR1s.
I really don't think there is much of a power increase over stock but I will say it feels noticeably quicker than the '86 4+3 I had with SLP runners, adjustable regulator a Ansa exhaust.
'85 4+3
Hooker headers, B&B cat back, cut air filter lid, Taylor wires, J55 front brakes, and 17" ZR1s.
I really don't think there is much of a power increase over stock but I will say it feels noticeably quicker than the '86 4+3 I had with SLP runners, adjustable regulator a Ansa exhaust.
04-20-2014, 09:23 AM
#29
Le Mans Master
Thread Starter
Most of the time it doesn't.
'85 4+3
Hooker headers, B&B cat back, cut air filter lid, Taylor wires, J55 front brakes, and 17" ZR1s.
I really don't think there is much of a power increase over stock but I will say it feels noticeably quicker than the '86 4+3 I had with SLP runners, adjustable regulator a Ansa exhaust.
'85 4+3
Hooker headers, B&B cat back, cut air filter lid, Taylor wires, J55 front brakes, and 17" ZR1s.
I really don't think there is much of a power increase over stock but I will say it feels noticeably quicker than the '86 4+3 I had with SLP runners, adjustable regulator a Ansa exhaust.
It felt very fast and surprised a lot of unsuspecting folks. In the 90s the L98 was no Joke.
04-20-2014, 10:23 AM
#31
Le Mans Master
Thread Starter
04-20-2014, 10:43 AM
#32
Melting Slicks
04-20-2014, 11:32 AM
#33
Racer
Mine is a 92 LT-1. Added Trick Flow heads, LT-4 hot cam, 3.55 gears, 2500 rpm converter, American Racing long tube headers and a new "tune" by Ed Wright. Those changes probably yielded an additional 100 HP at the flywheel. On deck is a 52 mm TB and 30 lb Bosch injectors.
04-20-2014, 12:04 PM
#34
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
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St. Jude Donor '05
I can appreciate both stock and modded cars
solid roller 383
Textbook "too big heads/cam" single plane 850 etc
Easily more than 500 less than 6
Honestly dont know dont care on a real dyno #
Its fun and hauls azz.
solid roller 383
Textbook "too big heads/cam" single plane 850 etc
Easily more than 500 less than 6
Honestly dont know dont care on a real dyno #
Its fun and hauls azz.
04-20-2014, 12:23 PM
#35
Instructor
My '96 auto: D44 rear end swap with 3:73, chambered exhaust, line locks. and the "regular" mods like TB coolant bypass, IAT relocate, airfoil, high-flow air box. I lost a bit of top-end speed, but the car pulls like a tractor.
Last edited by 06_LT1; 04-20-2014 at 12:39 PM.
04-20-2014, 12:24 PM
#36
Banned Loser
Member Since: Aug 2009
Location: They say you learn from your mistakes, I must be a genius
Posts: 52,808
Received 248 Likes
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114 Posts
2017 Corvette of the Year
2016 C4 of Year Finalist
Creator of the "Original" whining and crying thread
St. Jude Donor '14-'15-'16-'17
By far the best engine ever installed in a C4.
04-20-2014, 12:37 PM
#37
Le Mans Master
.. Hand build by the Mercury Marine Company in Stillwater Oklahoma....WW
04-20-2014, 12:49 PM
#39
Instructor
@ Ch@os,
How did your LS3 swap go?
I lost the trail.
I have a special project coming up and plan on using the Lingenfelter LS3 @ 550 HP crate.
The project will start when I return from Kentucky next weekend.
How did your LS3 swap go?
I lost the trail.
I have a special project coming up and plan on using the Lingenfelter LS3 @ 550 HP crate.
The project will start when I return from Kentucky next weekend.
04-20-2014, 01:32 PM
#40
Drifting
1988 base
Edelbrock 3860
SLP runners ported
Smooth coupler
Open lid filter K&N filter
Heads exhaust ported
1.5 roller rocker arms
Gasket matched air intake
Adjustable fuel pressure
24lb Bosch injectors
8mm wires
Hypertech coil
Comp Cam 08-501-8
Hedman long tube ceramic coated w/ EGR, O2
Magnaflow cats
Flowmaster 44 mufflers w/LT-1 tips
2.5" true dual exhaust
Edelbrock water pump
2 row all aluminum radiator
DeWitt fan
No Frisbee !
balanced motor
J55 brakes
I test drove a bone stock 1988 last week and it was a disappointment. I am so used to my cars performance. It made me happy to be reminded of how different my car is today.
Edelbrock 3860
SLP runners ported
Smooth coupler
Open lid filter K&N filter
Heads exhaust ported
1.5 roller rocker arms
Gasket matched air intake
Adjustable fuel pressure
24lb Bosch injectors
8mm wires
Hypertech coil
Comp Cam 08-501-8
Hedman long tube ceramic coated w/ EGR, O2
Magnaflow cats
Flowmaster 44 mufflers w/LT-1 tips
2.5" true dual exhaust
Edelbrock water pump
2 row all aluminum radiator
DeWitt fan
No Frisbee !
balanced motor
J55 brakes
I test drove a bone stock 1988 last week and it was a disappointment. I am so used to my cars performance. It made me happy to be reminded of how different my car is today.
Last edited by C4in mesa; 04-21-2014 at 05:57 PM.