LT1/LT4 hp/tq numbers?
Thread Starter
Joined: May 2004
Posts: 1,593
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From: Halfway back on the Highway to Hell...again!
LT1/LT4 hp/tq numbers? I would like to see some of the hp/tq numbers people are pushing with their setups. If not in your sig, post them here. I think it would be a great sticky.
My LT1 is a 94 Impala SS(4200lbs), LT4 hotcam kit, home P&P alum. LT1 heads, 1.94/1.60, ported MAF,52mm, TB, slight port work to intake, 30# inj., u/d pulley, MSD coil/Dig 6 box,Taylor wires, AC Delco plugs, LT4 k/m, Hypertech tuning (soon changing to PCMforless L.Y.O.), SLP Intake, !AIR, Hooker Spagetti headers, Cat delete, flowmaster 2 chambers, 2800 stall, 3.08's(need 3.73's)
puttin down 368rwhp/387rwtq. w/ 135k mi on motor
Last run was 1/8 mi 8.46@81.78, 1.71 60', 52degF
Thinking of juicing after this winters rebuild.
My LT1 is a 94 Impala SS(4200lbs), LT4 hotcam kit, home P&P alum. LT1 heads, 1.94/1.60, ported MAF,52mm, TB, slight port work to intake, 30# inj., u/d pulley, MSD coil/Dig 6 box,Taylor wires, AC Delco plugs, LT4 k/m, Hypertech tuning (soon changing to PCMforless L.Y.O.), SLP Intake, !AIR, Hooker Spagetti headers, Cat delete, flowmaster 2 chambers, 2800 stall, 3.08's(need 3.73's)
puttin down 368rwhp/387rwtq. w/ 135k mi on motor
Last run was 1/8 mi 8.46@81.78, 1.71 60', 52degF
Thinking of juicing after this winters rebuild.
Last edited by SAPPER; Dec 14, 2004 at 04:42 AM.
Great numbers! I think your MPH would increase significantly with a gear change. Be thankful your not like me. I am running similar mods...but with a 2.59 rear in my Vette 
Below is what mine made. The numbers were done without the E water pump and some other items, so the NA numbers should be a little higher. And that is on a stock tune! I no longer have the TNT kit, I have been starting a buildup for a force inducted 357 CI LT1. I'm hoping to go over 600RWHP with it.
Dynojet results
Motor: 300.3RWHP 314.RWTQ
75 Shot: 343.2RWHP 379.5RWTQ
100 Shot 404.8RWHP 469.0RWTQ
150 Shot 443.7RWHP 514.2RWTQ
Black 1996 Z-28, 6spd with Pro 5.0 and Lou's Short Stick and MBA ****, K&N cold air, 52MM polished TB, Granatelli Mass Air Flow sensor with polished ends. Crane valve springs, Comp hardened push rods w/guide plates, Comp Pro Magnum roller rockers. Hooker ceramic coated long tubes with mufflex Y pipe, SLP Dual/Dual Cat back with Moroso Spiral Flow bullet in Intermediate Pipe. MSD 6A, MSD coil, MSD plug wires, NGK TR55 plugs. March underdrive pulleys. Auto meter electric Fuel pressure gauge in pod and Scanmaster. Granatelli 255lph in tank pump. Aeromotive adjustable fuel pressure regulator. 6AN braided fuel lines rerouted from factory location. DMS drop springs, BMR control arms, adj. panhard rod. Spohn weld-on lower control arm relocating brackets. Enkei Win wheels with 275/40/17's in front and 315/35/17's in back. Polished aluminum radiator cover, polished aluminum valve covers, polished aluminum Vortech elbow, chrome alternator, ceramic coated intake, ceramic coated water pump housing with Mezeire Electric water pump, ceramic coated accessories bracket.
Dynojet results
Motor: 300.3RWHP 314.RWTQ
75 Shot: 343.2RWHP 379.5RWTQ
100 Shot 404.8RWHP 469.0RWTQ
150 Shot 443.7RWHP 514.2RWTQ
Black 1996 Z-28, 6spd with Pro 5.0 and Lou's Short Stick and MBA ****, K&N cold air, 52MM polished TB, Granatelli Mass Air Flow sensor with polished ends. Crane valve springs, Comp hardened push rods w/guide plates, Comp Pro Magnum roller rockers. Hooker ceramic coated long tubes with mufflex Y pipe, SLP Dual/Dual Cat back with Moroso Spiral Flow bullet in Intermediate Pipe. MSD 6A, MSD coil, MSD plug wires, NGK TR55 plugs. March underdrive pulleys. Auto meter electric Fuel pressure gauge in pod and Scanmaster. Granatelli 255lph in tank pump. Aeromotive adjustable fuel pressure regulator. 6AN braided fuel lines rerouted from factory location. DMS drop springs, BMR control arms, adj. panhard rod. Spohn weld-on lower control arm relocating brackets. Enkei Win wheels with 275/40/17's in front and 315/35/17's in back. Polished aluminum radiator cover, polished aluminum valve covers, polished aluminum Vortech elbow, chrome alternator, ceramic coated intake, ceramic coated water pump housing with Mezeire Electric water pump, ceramic coated accessories bracket.
hmmm well ive got 112k on the car now. its bone stock except for ngk tr55 plugs, msd wires and a K&N filter.put down 272/309. got my headers and catted ypipe on now, just havent dynoed it yet. cars a 96 ws6 m6
hey sapper, I'm puttin down about 366 RWHP, with damn near same combo, ....do you have the flow numbers on your heads, I did mine myself, and was wondering aproximately how well I did.
z28boysteve, do you have any 1/4 mile runs? Am running a similar engine setup with my vette except my heads are stage III ported with 2.0" X 1.57" valves. Stock A4 with stock 2.59 rear 
(I know its killing me) Just curious to see what your trapping.
(I know its killing me) Just curious to see what your trapping. well, with the worlds crappiest 4,000 stall converter, and plug wires that were arcing (didnt know at the time of course) I ran a 12.12 @ 110...7.69 @ 87mph, Swapped to a dynamic converter, and new plugs and accel ferro 8.8 wires and went 7.5049 and 7.5051 @ 90.55 and 90.xx <--forgot a full .2 faster and 3 more mph, in the 1/8th! I would assume now a 114mph trap, and 11.7s-8s 1.59 60' next time i go down to houston (when I get another camaro for a daily driver cause I totalled my 2000) Ill remove AC, PS, carpet pad, and front and back bumpers, and pass and rear seat to try to get 200#s out of the car. that and not a full tank of gas this time! Hopin for 116mph with the hotcam.
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203 rwhp, 15.6 @ 91 mph in my 94 Z28 'vert. 
Oh, that's with a 4.3L L99 motor out of a Caprice in it. My h/c motor that ran low 13s blew up last year. Will build a 383 after I get my 79Z back on the road...
Oh, that's with a 4.3L L99 motor out of a Caprice in it. My h/c motor that ran low 13s blew up last year.
Will build a 383 after I get my 79Z back on the road... 
just strapped it down again today. now with TPiS long tubes headers and a Random Tech dual cat ypipe, i put down 285/320 to the wheels. no tuning was done. i just drove it for a while. i think i may be able to tune it some, but im not sure im already at a 12.7 AFR. just have to see.
oh thats through a stock WS6 muffler system
oh thats through a stock WS6 muffler system
Launching!
Joined: Jul 2004
Posts: 273
Likes: 1
From: HighDesert California
some of you guys are really sick.. putting down those kinda numbers is pretty dam shocking.. 
forgive my lack of trends, how exactly are some of you guys bringing about a 396LT1?? is it a kit like the 383??
forgive my lack of trends, how exactly are some of you guys bringing about a 396LT1?? is it a kit like the 383??
Last edited by LT1Burnout; Dec 22, 2004 at 10:13 PM.
Originally Posted by LT1Burnout
some of you guys are really sick.. putting down those kinda numbers is pretty dam shocking..
forgive my lack of trends, how exactly are some of you guys bringing about a 396LT1?? is it a kit like the 383??
forgive my lack of trends, how exactly are some of you guys bringing about a 396LT1?? is it a kit like the 383??
The only difference between a 383 and a 396 is the crank. The 396 has a longer stroke than the 383. Both have the same 4.03 bore but the 383 has a 3.75 inch stroke vs 3.875 inch stroke for the 396.
Originally Posted by Bizzzatch350
After the converter I havent done any power mods to effect my dyno numbers. No clue what it makes now, It pulled 256/294 back in 00 w/ 41K miles. I'll dyno it after LTs and gas.
