LT1 intake engine combo's
#1
LT1 intake engine combo's
I have a converted LT1 intake and I was wondering what people have for engine combo's.
I have a 383 right now but 350 combos are good too.
I would like to know:
cid
compression ratio
cam
heads
exhaust
dyno #'s
track numbers
Thanks!
I have a 383 right now but 350 combos are good too.
I would like to know:
cid
compression ratio
cam
heads
exhaust
dyno #'s
track numbers
Thanks!
#3
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Car: 92 Z28 convertible
Engine: Miniram 383
Transmission: T-56
Axle/Gears: 4.10 stk 10 bolt
I have a Miniram and my old L98 combo looked like this,
350
9.8 CR
TPIS ZZ9 1.6 intake/1.52 exhaust
Trick Flow 23*
Edelbrock TES, Flowmaster 3" cat back
312 RWHP (very rich)
never got a chance to check
Ive now built up a 383 and it looks like this
383
10.4 CR
TPIS ZZ409 1.6 rockers
Pocket ported Trick Flow 23*
SLP 1 3/4 headers, Flowmaster 3" cat back
and the last two I havent checked yet.
350
9.8 CR
TPIS ZZ9 1.6 intake/1.52 exhaust
Trick Flow 23*
Edelbrock TES, Flowmaster 3" cat back
312 RWHP (very rich)
never got a chance to check
Ive now built up a 383 and it looks like this
383
10.4 CR
TPIS ZZ409 1.6 rockers
Pocket ported Trick Flow 23*
SLP 1 3/4 headers, Flowmaster 3" cat back
and the last two I havent checked yet.
#5
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Car: 92 Z28 convertible
Engine: Miniram 383
Transmission: T-56
Axle/Gears: 4.10 stk 10 bolt
Yes, I would have gone to 11 to 1. Im actually upgrading to AFR 210 Eliminator heads, TPIS ZZX cam, Hooker longtube headers, Mufflex 4" cat back and a 58mm TB. Hoping to make around 530 FWHP. Ill proably end up getting different pistons to get to 11 to 1 seeing out the AFR 210 heads have a slightly larger chamber.
I have access to a wideband so tuning was not as hard as it could have been. Theres still some work to be done on it.
I have access to a wideband so tuning was not as hard as it could have been. Theres still some work to be done on it.
#6
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Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
I put down 346rwhp years ago when I had the LT1 intake. 383, 10.5:1, afr 190's, 230-236-114lsa cam, slp 1 3/4 headers with 3" slp catback, 30lb injectors, 58mm tb, maf tune by me. Never got to the 1/4 with it but it went consistent 8.10's at 86 mph on the 1/8 mile. Can't remember the torque number, it was like 355 or so. 3500 stall and 3.73 gears.
#7
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Car: 1991 Z-28
Engine: AFR ELIM 195s,280xfi,58mmLt1 Intake
Transmission: 2200stl,700r4 shift kit,vette servo
Axle/Gears: 28 spline, 3.42 gears, SLP Posi
Converted Lt1 Intake bored for 58mm throttle body
383 cubes
9.12:1 CR
1 5/8 hedman longtubes catless 3" y and 3" flomaster cat-back.
230/236 .541 I .537 E 113 lsa
200 Dart platinum Iron Eagles
1.5 roller rockers
700r4/ 2200 stall
through a stock 48mm throttle body i made 330rwhp @5400 360rwtrq @4000
----------
i also had 24lb injectors, speed density dyno tune, 3.42 gears and this is a short rod stroker (5.7 not 6.0)
383 cubes
9.12:1 CR
1 5/8 hedman longtubes catless 3" y and 3" flomaster cat-back.
230/236 .541 I .537 E 113 lsa
200 Dart platinum Iron Eagles
1.5 roller rockers
700r4/ 2200 stall
through a stock 48mm throttle body i made 330rwhp @5400 360rwtrq @4000
----------
i also had 24lb injectors, speed density dyno tune, 3.42 gears and this is a short rod stroker (5.7 not 6.0)
Last edited by CamaroCrazy23; 02-08-2007 at 04:10 PM. Reason: Automerged Doublepost
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#8
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Car: 1987 GTA
Engine: High reving 332ci monster
Transmission: T-5
Axle/Gears: 3.73 posi
Havent thown the engine together yet but this is the plan
lt1 converted, and bored to 58mm
10.8 CR
334 stroker
284/292 0.525I & 0.546E
081 heads with a valve job and and a 1.6" ex valve
1.6 roller rockers
lt1 converted, and bored to 58mm
10.8 CR
334 stroker
284/292 0.525I & 0.546E
081 heads with a valve job and and a 1.6" ex valve
1.6 roller rockers
#10
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Car: 1991 Z-28
Engine: AFR ELIM 195s,280xfi,58mmLt1 Intake
Transmission: 2200stl,700r4 shift kit,vette servo
Axle/Gears: 28 spline, 3.42 gears, SLP Posi
N/a??? could be tough
But boosted, juiced, or blown oh hell yeah. Exspecially with a miniram. I know a guy with over 700 FWHP with a miniram and a procharger and thats all with a 355!!!!!
#11
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Car: 1988 Firbird
Engine: 406
Transmission: T-56
Axle/Gears: 4.10
1986 Coupe, auto, 3.45 gears, 1973 406, 11.5 to 1 compression, SLP cold air, gutted MAS, 58 MM throttle body, ported plenium, Superram intake, TPIS BASE, ported 23 degree Trick Flow Heads, ZZX cam, TPIS headers, TCI 3000 stall, 3" duel exhaust, Cheap and easy free mods, custom chip, daily driver
RWHP 405 @ 5400 RWTQ 436 FTLBS @ 4000
Best run
60 ft = 1.536
1/8 = 7.116 @ 95.874
1/4 = 11.185 @ 121.04
#12
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Car: 1991 Z28 (sold)
yeah someday i want to do a project C4 that can beat the current day Z06 yet is street driveable. ive heard its very difficult to get LSx engines into the C4 so i gotta go with a small block
#14
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Car: 1991 Z-28
Engine: AFR ELIM 195s,280xfi,58mmLt1 Intake
Transmission: 2200stl,700r4 shift kit,vette servo
Axle/Gears: 28 spline, 3.42 gears, SLP Posi
Im updating my old setup as we speak.
Old Setup:
Converted Lt1 Intake bored for 58mm throttle body
383 cubes
9.12:1 CR
1 5/8 hedman longtubes catless 3" y and 3" flomaster cat-back.
230/236 .541 I .537 E 113 lsa
200 Dart platinum Iron Eagles
1.5 roller rockers
700r4/ 2200 stall
through a stock 48mm throttle body i made 330rwhp @5400 360rwtrq @4000
----------
i also had 24lb injectors, speed density dyno tune, 3.42 gears and this is a short rod stroker (5.7 not 6.0)
NEW SETUP:
Converted Lt1 Intake bored for 58mm throttle body
383 cid short rod stroker (5.7 not 6.0)
9.2:1 CR (slightly smaller combustion chambers and thiner head gasket)
1 5/8 hedman longtubes catless 3" y and 3" flomaster cat-back.
comp cams 230/236 .576 I .571 E 113 lsa
195cc AFR Eliminators 2.05 1.60 65cc chambers
7/16" 1.6 Steel Promagnum roller rockers
Comp 918 Beehive Springs
700r4/ 2200 stall
Twin 58mm throttle body
3" Ls1 Aluminum Driveshaft.
24lb injectors
speed density RWD Dyno tune
3.42 gears
Old Setup:
Converted Lt1 Intake bored for 58mm throttle body
383 cubes
9.12:1 CR
1 5/8 hedman longtubes catless 3" y and 3" flomaster cat-back.
230/236 .541 I .537 E 113 lsa
200 Dart platinum Iron Eagles
1.5 roller rockers
700r4/ 2200 stall
through a stock 48mm throttle body i made 330rwhp @5400 360rwtrq @4000
----------
i also had 24lb injectors, speed density dyno tune, 3.42 gears and this is a short rod stroker (5.7 not 6.0)
NEW SETUP:
Converted Lt1 Intake bored for 58mm throttle body
383 cid short rod stroker (5.7 not 6.0)
9.2:1 CR (slightly smaller combustion chambers and thiner head gasket)
1 5/8 hedman longtubes catless 3" y and 3" flomaster cat-back.
comp cams 230/236 .576 I .571 E 113 lsa
195cc AFR Eliminators 2.05 1.60 65cc chambers
7/16" 1.6 Steel Promagnum roller rockers
Comp 918 Beehive Springs
700r4/ 2200 stall
Twin 58mm throttle body
3" Ls1 Aluminum Driveshaft.
24lb injectors
speed density RWD Dyno tune
3.42 gears
#17
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Car: 1991 Z-28
Engine: AFR ELIM 195s,280xfi,58mmLt1 Intake
Transmission: 2200stl,700r4 shift kit,vette servo
Axle/Gears: 28 spline, 3.42 gears, SLP Posi
stock 350 rods are 5.7 inches long and there are aftermarket rods that you can get that are longer by just .3 inches but that length is said to give more hp and torque.
#18
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Car: Death Mobile
Engine: 666 c.i.
Anyway, the real advantage of a longer rod are: 1) it causes the piston to dwell longer at TDC which is suppose to give more power by allowing the pressure in the cylinder to build longer and 2) it reduces the angle of the rod when travelling and suppose to be better for wear.
The disadvantage of a longer rod is it causes the wrist pin to be closer to the ring package. You must use different pistons depending on which rod you use, so I would ask to see the two pistons so you can see how close the wrist piston is to the ring lands.
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Car: 92 Z28 convertible
Engine: Miniram 383
Transmission: T-56
Axle/Gears: 4.10 stk 10 bolt
Re: LT1 intake engine combo's
I had my current combo dyno'ed,
383
10.4 CR
TPIS ZZ409 1.6 rockers
Pocket ported Trick Flow 23*
SLP 1 3/4 headers, Flowmaster 3" cat back
She put down 375 rwhp and 375 rwtq thru a t-56.
383
10.4 CR
TPIS ZZ409 1.6 rockers
Pocket ported Trick Flow 23*
SLP 1 3/4 headers, Flowmaster 3" cat back
She put down 375 rwhp and 375 rwtq thru a t-56.
#21
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Car: '86 T/A
Engine: 350/LT1 Intake
Transmission: 700R4 - Built
Axle/Gears: 4th gen 3.42
Re: LT1 intake engine combo's
I would like to know:
cid - 350
compression ratio - Stock 8.5:1?
cam - Crane Compucam 2032
heads - Stock
exhaust - Edelbrock headers, borla exhaust, magnaflow cat
dyno #'s - Not sure
track numbers - see sig
cid - 350
compression ratio - Stock 8.5:1?
cam - Crane Compucam 2032
heads - Stock
exhaust - Edelbrock headers, borla exhaust, magnaflow cat
dyno #'s - Not sure
track numbers - see sig
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