Stock bottom end goes 11.6's NA

I don't usually post here but felt compelled to post due to the fact that Joe Overton frequents the LT1 forum on this board (Joe's got the fastest NA LT1 record).

In short: 11.66 @ 117.2mph on a stock bottom end IROC-Z. Basically just MiniRam, Heads, Cam, Long Tubes, and a converter with the usual little mods. Drove to the track 2 hours each way and then bolted on some front skinnies. Swaybars, interior, etc intact. Joe's Lethal EFI Performance Camshaft did exactly what he said it would do in my motor. It definitely required my tuning knowledge to make it work ... but, once it was working - BAM! - awesome times. I'll have dyno numbers later.

Full story and video is here...
http://www.thirdgen.org/techbb2/showthread.php?s=&postid=1566114

Tim

11.66 :O *wets his pants*

thats so sick.and its still street legal?? i love the way the steam comes out of the tail pipes on the video b/c of the cam...its so phat. congradualtions on the car!

Thats sick, maybe one day I'll have that kind of power...one day

What're you running with the new engine stealth??

*thunk* oh by the way that was the sound of my jaw hitting the floor. First of all thats just incredible not only am i surprised that the bottom end is holding together those are just some really nice time slips congrats. Second i need to thank you. Some day i plan on building a 383, with afr 195's, mini-ram, long tubes but i had no idea what type of times id be running. The news of what your engine is doing makes me horribly excited for the plans i have now. Too bad im 17 and it will be some time before that happens but its still really encouraging news. Keep up the good work man! :bow:

Finally got my electrical/fuel problems sorted out, 1 day after having the car running right, the brand new starter kicked the can. It had been shrieking/grinding after the engine started ever since we put it in, after shimming it 100 times we finally all agreed that the solenoid that brings the gear back in wasn't working, I pulled the starter off tonight, hopefully next week I'll be running again. Then it's just a matter of getting the SPohn SFCs I have in my basement welded in and I'm off to the track. I'm hoping for a 13 second timeslip....we'll see.

As soon as I get a highperf tranny put in, I'm going to start saving up for an LT1, I'm definately looking for 500HP on the street for my 2nd engine build, I would love to see the dyno numbers on that engine trax, great job, I thought I would HAVE to go ATI procharger to get those kind of numbers, but who knows, maybe with some good AFRs and the right cam I can get 450-500HP NA.

edit: Oh yea, thats just crazy how bad you walked that other car, 12.9 and it looked like he wasn't even moving....is your car streetable? It sounded bumpy...

Thanks guys. My car is totally streetable. In fact, a couple of my buds were surprised at just how streetable it is ... and how smooth once you get into part throttle. There's no problem firing up the car and driving it to and from work.

Also - the car that I raced is a friend's car. However, I MUST give credit where credit is due. That is one fast car. In that video the owner wasn't driving. It was somebody else. They ran a 12.9@111mph. However, with the owner behind the wheel it went 12.0s @ 112mph and gave me a VERY good run for my money! It's a sweet thirdgen convertible.

Tim

Tim!
We like the drop top better...:D :p ANYWAYS...! Awesome run! I'm glad to see the stock bottom end is surviving at well over 6000 rpm and at times 6800! I might try something like that soon myself if things go as planned. :o

What's the old girl weight? If I may ask.

Hey awsome times ( unheard of to be honest) You got to love those Overton cams:bow:

As amazing as it is the real question is how long do you think its gonna be before you toss a rod and destroy over 2500 dollars in heads and intake?

Originally posted by AutoRoc
Tim!
We like the drop top better...:D :p ANYWAYS...! Awesome run! I'm glad to see the stock bottom end is surviving at well over 6000 rpm and at times 6800! I might try something like that soon myself if things go as planned. :o

What's the old girl weight? If I may ask.

Hey Denny - the last time I had it weighed it was 3550. Subtract the difference for front skinnies and that should be what she weighs.

Tim

Originally posted by doug791
As amazing as it is the real question is how long do you think its gonna be before you toss a rod and destroy over 2500 dollars in heads and intake?

First - I don't care. Although I have no money to rebuild her ... this car is not my everyday driver. It's basically just a huge RC car ... that I don't have to radio control (lol). I've been doing this for the past 8,000 miles so I don't know what to tell you.

Tim

that's damn impressive...truth be told, I'd probably roll it on my way to work :) . That's gotta be hell on a stock bottom end though, I'd feel compelled to upgrade it, even if nothing was wrong.

Originally posted by TRAXION
First - I don't care. Although I have no money to rebuild her ... this car is not my everyday driver. It's basically just a huge RC car ... that I don't have to radio control (lol). I've been doing this for the past 8,000 miles so I don't know what to tell you.

Tim makes sense to me. If i were you id start saving up to buy a stronger bottom end because since you dont have the money to rebuild it what a shame it would be to ruin all of those beautiful parts. Plus if you went all forged you could run a nice little spray of juice and maybe even get into the 10's :) Either way congrats again.

Don't get me wrong guys. I'd love to put a stout bottom end under there. But, you gotta have your priorities. I have a wife, a 1 year old, a new house, and now we're attempting to build a garage (mmmmm I can't wait to have my own lift). Once the garage is done and the house gets it's modifications then I'll start to think about the bottom end. But, IMHO, the bottom end won't go first. The first thing will be the transmission. This 700R has never been rebuilt. It wasn't meant to hold this type of power.

BTW - Anyone spinning thier L98 as high as me should definitely install a very good harmonic balancer. I have been running a Fluidampr since day 1 and give that piece some of the credit that my bottom end has held together so well.

Tim

Nice runs man. I'm loving it.... seeing that stock L98 bottom end holding together!

thanks for the post, I'm hoping to get into the 11's on a stock bottom end.

I agree with you - i would love to have a better bottom end, but i have a house, wife, etc and this is my 'fun' car. If it goes, time to build another motor :)

30k miles on a stock l98 bottom end, carbed, cammed, heads and spray (100)!

That's really very impressive. Not even the ET so much as the MPH. That's some serious top end pull, especially though an automatic.

My one experience with the MiniRam intake on a larger 400 we got 110+ MPH out of it first time down the track. Eventually we worked out some kinks (wrong injectors, etc) and went 112. This was a much milder combo than yours, except for the larger cubes- which is a testament to how much HP you can make with a MiniRam.

Our combo looked something like this (from memory):
409ci, stock crank, stock 400 rods (5.56")
Trick Flow G2 heads- box stock
Crane Energizer flat tappet hydraulic cam (210*/210*, .440/.440 lift on a 110* LSA)
Hooker shortie headers, 3" exhaust
SLP cold air intake
Off-the-shelf TPIS chip, utilizing stock MAF system (it was a 1987 GTA)
700R4 trans- dead stock, just like yours but with shift kit and Vette guts to allow OD at WOT
Stock torque converter
Stock 3.23 rear gears
Pep Boys Futura radials (2.0 60 foot times)
Just shy of 3900lbs race weight YIKES!
Shifted at 5800RPM

The thing made just STUPID bottom end torque. Getting it out of the hole was real artwork. On a dyno it laid 470+ ft/lbs to the rollers at only 2700 RPMs (as low as we could lug it without a downshift) and was flat as a billiard table right up to 5000, dropping off gradually after that. The dyno's HP numbers were way off so I did my own math and came up with about 420HP at the crank- take that with a grain of salt, obviously.

Later on, the cam lost a lobe so we shoved in a larger Comp Cams 270 Magnum (224*/224*, .470/.470" lift on a 110* LSA). Never got that combo dyno'ed but my calibrated butt told me we traded just a smidge of bottom end torque (glad to be rid of it, actually) for some serious mid RPM pull. It would go through the traps at a solid 114-115 MPH and was a little easier to launch out of the hole.

Best race this car ever had- a mid-90s ZR-1 Vette. An arranged highway race. The Vette lost. Nothing like sailing right past a ZR-1 Vette at 120 MPH, hitting overdrive and continuing to walk away.

BTW- most of these runs were made at Cecil County Dragway, just like you. I live near Wilmington, DE so it's my home track, too.

how do we get one of Joe's cams?