'98 Z28 LS1

[GP6T]

The Beacon of Reality must chime in. It is rumored around here that I am a defender of the ls1, well Im not. I think you have a real good chance, especially with your lighter car. Also if you get your gears in I believe you will have a BETTER chance. good luck
The Hated Beacon of Reality
p.s. (get new heads)

anyone?

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'69 Coupe with 351W
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Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
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[fastang]

GP6T, Nobody here hates you. Your last post was constructive and helpful. A few before came off as rude whether you wanted to be rude or not. I personaly appologize for anything rude I may have said to you before. If you want to join us next saturday let me know, and we can meet you.

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95GT B303 cam, 1.7 rockers, 65mm TB, 73mm MAF, milled heads, 355's K&N, off road pipes, pulleys, msd coil, 9mm wires, Tremec 3550, Pro5.0 shifter,10.5 Motorsport clutch, FMS aluminum driveshaft, weld in subframe connectors

[Rev]

BennyBoy, I'd think twice about those 3.89 gears. That's pretty much for a street driven C-4. That will spin your motor at almost 3600 RPM at 70 mph cruise. I use 3.25 with mine and turn 3000 at 70. That's about the most that I want to cruise at. Also the HP numbers you're referring to are gross HP. That's quite a bit higher than the net HP that manufactuers use now. I agree with your original assumption. I'm betting you'll run low 14's. The LS1 will probably win, but it'll still be fun. Just more inspiration for future mods. Good luck anyway.

Rev

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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.

[Dark Knight]

you might beat it off the line, but it'll drive by you on the top end.. unless you get a set of better heads..

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84 convt,'95 302,AFR's, performer
3.55's, underdrives stock shorties
stock cam, 1.7's
14.06@100.21, 255RWHP on a hot day
265 on the mph/weight chart

Dark Knight, the bad thing is that I'm 16 and I am a 3 sport athlete in high school, so I'm pretty busy with that and don't have a job. I do however have a job in the summer, but almost all of that goes into the bank for college. I did manage to get $3k for just the car this summer. But I didn't put quite enough into the bank though. So this summer I'm putting less into the car and more into the bank. I do plan on getting a damn good scholarship though. I have a 4.0 GPA in school and I just took a test that told me that I'm supposed to score a 30-33 on my ACT. And I'm pursuing a football scholarship pretty hard already too. So maybe if I do end up getting a scholarship I can dump a lot of money into my car. Then I can get those Edelbrock RPM heads that I need so badly.

Rev, 3.89s are too much huh? At first I was planning on going with 4.11s, then about everyone and their dog told me to not go that steep, so I figured 3.89s would be just fine. I don't think 3.55s will be enough, do you? I have 3:1 gears now and I HATE them with a passion. My dads 2000 Jeep Grand Cherokee (4.7l and 3.73s) will beat my car the first 30 feet of the race because my gears are so doggy then I hit my powerband and they spin forever. I still smoke him through my first gear even when I do spin though. The Jeep's only got 220 or 225 horsepower and nothing much above 3000 rpms. What gears would you recommend?

And also Rev, so those numbers, ~350 bhp and like ~425 lb-ft torque, is there a way to figure them to net hp and net torque? Or rwhp and rwt? Thanks guys for all the help. This site is awesome.

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
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[This message has been edited by BennyBoy (edited 03-20-2001).]

[Rev]

BennyBoy, the Jeep and all late model cars have over drive and so can use a 3.73 or a 4.10 with no problem. They cruise at 70 mph at 2500 or so. With the C-4, we don't have that advantage (over drive) so we can't use those as well and still cruise at a decent rpm.

Gross hp as was used before 1970 is about 25% higher than net that we use now. Or to say it another way, net is about 80% of gross. Standard shift drivetrains have an effiency of about 83% according to Ford. Automatic drivetrains are usually considered about 78-80% efficient for newer ones and possibly as bad as 75% for our old C-4's. That means we only put 75-78% probably of our net hp to the rear wheels.

Hope this helps a little.

Rev

Congratulations on your academic and atheletic success. I too had a 4.0, I got a full ride for academics. I will graduate from college this summer with an Electrical and Computer Engineering degree. If I had more size I could have played college football. At 5'9" 165 lbs I was not a tight-end or a middle linebacker size (that is what I played). I was Academic All State for Football. Keep going and don't let your car interfere with your school. Get an education first, then you can build whatever you want .

I figure my car has at least 360 gross hp then. Considering it was rated at 250 stock with a 2-bbl carb/intake. On all my estimates I'm going low on, so I don't get my hopes up then get them shoved in my face. Start with 250+15(exhaust), 265+40(750 cfm carb), 305+20(intake), 325+30(cam)=355. And I figure an increase of 30 hp for the cam is very low. It's probably closer to 40-45. Which then it's 370 gross hp. That may be a little much. So I'll just use 360. So, 80% of 360 is 288. 75% of 288 is 216, and 80% of 288 is 230. So I probably have about 220-225 rwhp? At the most is probably 225-230, using 370 gross hp? I guess that's not as good as I thought, but it is a lot better than it could have been. So my car weighing 3200-3300 pounds and having 220-225 rwhp...is that good for low to mid 14s? Thanks for all the help everyone.

Rev, so you have about 230-235 rwhp right? And you hit 13.97@100.3. So it's definitely possible to get into the 13s for me with what I have right now. I just need small things. How did you have your car set up suspension-wise and how was the weather? And what elevation? What gears do you have, and how were your 60' times? I feel like I'm about 6 right now because I'm asking so many questions. So I'll just stop for this post. Thanks Rev, and everyone else who has replied.

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
=========================

[This message has been edited by BennyBoy (edited 03-22-2001).]

Anyone? Rev?

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
=========================

[Rev]

BennyBoy, my car dyno's at 223.5 @ 5100 and 262.8 at 3750 at the rear wheels. 223.5/.75 = 298 SAE hp. If you convert SAE to standard hp like you get from the engine dynos in the magazines you add about 4-4.5%.

My car weighs 3020 lbs. without me in it. I weigh about 220, track wt. is about 3250 with 1/2 tank of gas.

My intention is to have a good street driver, so my car has more or less a road racing suspension, not a drag racing suspension. I'm using 620 front coils cut about a 1/4 turn. I have 1 1/8" front sway bar and a 3/4" rear sway bar. Adjustable Gabriel Strider shocks at all 4 corners set at the stiffest setting. 5 leaf springs with mid eyes at the rear. 235/60/15 BFG Radial TA's at the rear and 215/60/15's at the front. This set up makes the car handle well and still hooks well with my 8" 3.25 Traction-Lock and C-4.

Best 60'......2.107
Best 330'.....5.889
Best 660'.....8.978/80.17
Best 1000'....11.656
Best 1320'....13.951
Best 1320'....100.35

All these times are from different time slips, but are the best times for the different points on the track.

If there's anything else you want to know about my set up, feel free to ask.

Rev



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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.

I have everything pretty much stock suspension-wise on my car. I have new Ford shocks on the front with the stock sway bar. How much would it help for me to remove this before I went to the track? I won't be driving it around at all without it on, just at the track so that's not a problem because we're hauling it on a trailor. I have no sway bar in the rear and I have KYB gas-a-just shocks in the rear with shock extensions. We are replacing the old leaf springs with new ones when we replace the rear end. I was figuring my track weight to be about 3250 also, with me in the car. I weigh about 150 pounds right now, by the time I go to the track I may weigh 20 pounds more because of my track/football program I'm on right now. Is that about right? I will have it weighed at the dump before I go just to know. I think that's all for right now. Thanks again man.

Since 3.89s are too much would 3.70s be low enough? Or should I just go down to 3.55s?

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
=========================

[This message has been edited by BennyBoy (edited 03-26-2001).]

[Rev]

BennyBoy, just try to decide how fast you're willing to spin your engine while cruising. Right now with the 3.00/1, I bet you're turning about 2750 @ 70. If you go with a 3.73, you'll get 2750 X 3.73/3.00 = 3420 @ 70. 2750 X 3.55/3.00 = 3250 @ 70. 2750 X 3.25/3.00 = 2980 @ 70. Slight variations occur depending on tire diameter. You will have to be the one who decides what cruising rpm you can live with.

Rev

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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.

[Skyman]

Benny- Sorry to burst your bubble, but your way of adding up HP just doesnt compute in the real world. You probably have about 290-300fwhp to be correct. If I added up like you did I would have 450hp probably... Which cirtainly isnt the case. Only way your gonna know is get to the track. I think the 3.70 gear would be good for you.

The M6 Ls1's are a ***** to launch. Get the gears, and leave hard. He will be trying to make up and probably won't be able to launch it worth crap. Ive raced several of these on the street and they can't hook. Just hope he doesnt blow by you in 3rd gear.

Sky



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-1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows.
12.55@107mph
Runs on 87 Octane and gets 24mpg!

Rev, so at about what RPMs would I be crossing the finish line at in the quarter? That's the only thing I'm worried about. I don't really care much about cruising speed at all.

Skyman, 290-300 fwhp? That's exactly what I figured. My figures that were like up around 360-380 were gross hp. Not net hp. So I was about right then, correct?

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
=========================

[StreetStang37]

Sounds about right. Maybe just SLIGHTLY lower?

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1993 Mustang GT - March Ram Air & Pullies, K&N, C&L 73mm MAF, Super Competition Hooker Headers, 2 1/2 in. mandrel bent cat back, High Flow H-Pipe, Pro 5.0 Shifter, 16* Timing Advance

Well, yes. I came up with about 288 net hp. And I'd give or take about 15 with that number. That's even a little under what Skyman said. So if anything, I'm estimating a little on the low side here.

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
=========================

[Rev]

With 3.70's I think you'll be turning about 5000-5100. That ought to be perfect for the 1/4 mile. I had thought you were shooting for a street cruiser. I'd pick 3.70's for the strip.

Rev

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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.

[91LX2Bfast]

When my Stang had the stock 2:73's, I raced a '99 WS6 LS1. I had him by an easy car through first gear, but by halfway through second he blew by me like I was his ***** . If I had 3:73's, i think I would have been ahead until third, and then I would have been his ***** , lol. No lie, these LS1's are pretty sick.
At the track in the fall, the only LS1 there was a T/A running 12.7@108 w/ only a muffler (not full catback), bored throttle body, and MAF w/ a K&N. Whats that? like $500 worth of stuff. Good luck though.

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2001 SVT Lightning (red): Many mods to come- Let the Vette killer begin to take shape

1997 Thunderbird 4.6L: Dynomax exhaust, Mustang intake tube, SVT Lightning 80mm MAF, Accufab MAF adapter, 7" Auto-physics powerstack filter, ram air, B&M 24,000GVW trans cooler, Custom chip, FMS 9mm wires, many more to come...

No Longer own: 91 LX 5.0L 5 spd Red w/ black interior
2 chamber flowmasters, Bassani off-road X-pipe, MAC cold air induction, Kirban short throw, Heavy duty 3 core radiator, FMS 3

5000 at the stripe would be perfect! Well, I'm pretty sure I'll be getting 3.70s now. Thanks Rev. That helps a ton. So being in the low 14s what would be easiest/cheapest to get into 13s? That is my goal before I graduate. And I still have over 2 years. But I am giong to be spending very little on my car (besides rear end swap this summer), so that sucks.

I have heard that about the LS1s...that they are pretty quick in 1st and 2nd gear, but once they hit 3rd they pull like a mofo. With my 3:1 gears right now my 2nd gear kicks butt, and 1st gear is decent.

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'69 Coupe with 351W
=========================
Edelbrock Performer-RPM intake manifold, Edelbrock Performer-RPM cam, Edelbrock lifters, Edelbrock 750 cfm carb, Accel coil, Moroso Blue-Max spark plug wires, Hedman headers, 2 1/2" pipe, glasspacks, Edelbrock double roller timing chain, Edelbrock valve springs, Flex fan, C4, Lakewood traction bars, 3:1 open rear-9" 3.89:1 posi coming this summer
=========================