Thought you guys would enjoy these clips. Car went 10 teens at 130 mph first trip out. Still have some more tuning to do. These are all motor and running winter blend E85. I'm kind of nervous about turning on the N2O without a wheelie bar.

Got out of it when I realized I was not going the direction I wanted to. :eek: Sixty foot was 1.361

http://s29.photobucket.com/albums/c274/Eric68/?action=view&current=2009_04_04testandtunewall.flv

This one hooked and booked -- this was a 10.13 pass. Sixty foot was 1.358

http://s29.photobucket.com/albums/c274/Eric68/?action=view&current=2009_04_04testandtunenew427.flv

Motor is 427" SBC, AFR 227 heads, 13:1 compression, 260* roller cam.

Very nice Eric! :thumbsup:

Nice :D

Mark

Very Nice Eric!!!

Very nice! Should run great on the nitrous! :beers:

Whew :)

WOWWWW!!!! Lots of air under the front tires there. I would be nervous too about the juice with that kind of power already. Congrats!

Nice! Cool to go N/A what you used to go on the spray.

Holy cow. Good going.

Wow very cool, time to update your sig.

That thing is flyin for 1st pass,
9s are close with some tuning and more track time.
Great 60ft too. Whats it flash too?
That’s a killer pump gas SB

That's going to be a trip if you spray that thing right off the line! I can see why you want to get some bar's on it first. Congrats!

10.13, .14 faster and...do you have a license?

Hey Eric. Just noticed that you are here in Michigan. What track do you run your car?

Nice :thumbsup:

Very nice air under them tires :thumbsup:

WOW! Nice job Eric! I don't remember see that kind of air under the fronts we JimM and I saw you a few years ago at Cordova. Any plans on running DragWeek again this year??

Way cool Eric!
Congrats!

Ron

Nice Eric....VERY nice!

Nice job, Eric. Below 9.90 & over 135 MPH, you'll need a 'chute and suit.
Keep it up........

You Michigan guys make sure you don't tell any of the boys about my ETs yet, OK? I have a race pending with a guy that runs 10.20-10.30's NA with a 555 BBC Camaro before the cat gets out of the bag LOL. He wants to run me on the bottle too, but like you guys said I need the cage, suit and chute. I might make one outlaw run on a street car chaos evening.

I've thought about doing Drag Week Tom, but I have things to deal with if I do . . . . first is gassing up on E85 the entire route. The compression is too high to get stuck in BFE with nothing but 92 octane gasoline. The second is Jeff McConnel and his bad-azz Malibu. He has some real high end cylinder heads and should be able to run low-mid 9's on motor.

I might ride shot gun on Drag Week this year with my friend in his 69 Procharged Camaro. The 383 we are putting back together went 8.99 @ 150 in its old configuration; it should go a few tenths faster this year.

I race at MidMichigan usually. US131 is my usual test and tune spot since it is closer.

Very good! Spray it in 2nd gear to see what it does.

Eric that thing is sick :thumbsup::thumbsup::thumbsup:.... Congratulation on first time out, i can only imagine how much better it will be next time out... You gotta get a cam inside that looks like a awesome ride :yes:.

Great job Eric so close you can smell the nine's :beers:

I have a race pending with a guy that runs 10.20-10.30's NA with a 555 BBC Camaro before the cat gets out of the bag LOL. I want front row seat - anytime a SBC can pull out a can of Whoop Ass on a BBC, I'm all for it.
You know who I'm rooting for...........

:thumbsup: :thumbsup: :thumbsup:

Eric,
Any plans to come to Cordova this year?
Smitty

Hey Eric. Just noticed that you are here in Michigan. What track do you run your car?

i'm in mi too, you eastside?

Eric, you are always on top with your stuff, hopefully i can get mine out to the westside this summer and get a few pointers

Make a trip out to MidMichigan on a street tire shootout night asnd hang with the gang Darko.

Won't get to Cordova, but maybe a couple tracks down in Indiana (Brown County for one).

way to go Eric, ill never catch ya now. that thing is gona fly when ya get the tune just right. and on spray, thats gona be unreal. Dave

i'm in mi too, you eastside?




Southeast. If your in Rochester, i'm about an hour or so south of you. I have been planning to get to Mid Michigan motorplex. I heard it's a great track. Unfortunately Milan is the closest track for me.

Wowsers, thats intense. How much HP is that mill making?

Eric,

I'd love to hear more about that motor - what block, how much head work, any details on the cam you be willing to share, how much gain you think the E85 conversion was worth, header and carb size, etc.

Thanks and great looking passes!!

Brian

Nice work Eric but I have a question about your track. The wall is right next to the sweet spot on the pavement. You have no room for error or recovery. Why? You can't even pull to the side with a broken engine. Any failures WILL OIL the track. Just wondering,,,,

Congrats :beers:

Great 1st runs on new combo.

Nice work Eric but I have a question about your track. The wall is right next to the sweet spot on the pavement. You have no room for error or recovery. Why? You can't even pull to the side with a broken engine. Any failures WILL OIL the track. Just wondering,,,,

I never thought of that Fred. They do have a lot of oil downs at this track and there are a lot of street cars racing there too (doesn't help). I have seen a couple cars hit the wall here, I wonder if that is why . . . .

While its the closest track to me I actually prefer a different track and only do test and tune at this one. I don't race there very often.

Looks like you are pretty close right out ofthe box. Now that you guys have thawed out up thre and you can get some tuning in, I bet the car will be comfortably in the 9's real soon. :hurray:

Wheelie Bars?? On a street car? :noway:

Congrats Eric:hurray:!!!!

Microgiant -- the dyno said 625 HP @ 6500 and 579 lb/FT TQ at 5000.

Funny thing about thawing out Royce, after the nice weather for test and tune last weekend it got cold and snowed 6" east of here. LOL. Weather looks good again this weekend . . . I dunno, might have to make another trip to the track.

Great going!!

pdq67

Eric,
The car is leaving great. Kinda looks like my twin: YouTube - Camaro Wheelie

Believe it or not, too much wheelie can kill ET. I went 9.85 on the pass above. Then on the same day I went 9.75 tightening up the front rebound. See below.

YouTube - SBC Camaro vs. BBC Camaro

P.S. The car in the tower lane runs a 434 SBC. He needs to talk to you. :D

Awesome Eric! :thumbsup:

I went back to test and tune yesterday Garret to do some carb tuning and play with the suspension some. The intent was to get it launching clean (a little less wheelie like you said) and the track was crap. Tons of street tires and bald spots on the line and I could only get a 1.39-1.40 out of it. I did get some jetting done, I think my tuneup was already very close.

Time for new tires and a decent track. Heading to MMM soon . . .

Eric,
List the specifics of your front and rear suspension. I might be able to assist.

You'll never hook it on a crap track. Been there done that. If the track is loaded with street cars and there are bald spots you're done.

Yeah, it was real crowded with a lot of street cars, the big boys all packed up and went home after a couple hours -- now I know why. LOL

Here's the front:

Factory A-arms with del-a-lum bushings and l/f ball joints
No sway bar
Koni SPA 1 shocks.
Moroso Trick springs
5.75" travel
Took 40-60# off the nose this winter by dumping the factory pwr steering and pwr brakes for a manual r/p and a strange manual m/c.

Rear:
Calvert split monos
QA1 adjustables (1 way)
C/E slide-a-links. Special bushings to adapt the Calvert springs to the slide-a-links.
DSE weld-in subframe connectors
Hoosier Drag radials. 275-60-R15 on 15x8 rim. 18.5 psi. tread is gone (left overs from last season)

Eric, I think you will find some value in rear double adjustible shocks. I'm running AFCO's on mine. I have found that tighening up the rebound while leaving the bump full stiff can help on a poor starting line. When the prep is killer I can run full loose rebound and have picked up as much as .02 - .03 in 60 foot in A-B testing. Same track, same day, same lane, simple cool down time, shock adjustments and could see each rebound change show up on the timeslip.

Also, I have found that my combo likes less preload in the bars. I'm down to simple spring contact with driver weight in the car. Next time I try some testing I might try a small gap.

Will see what I can come up with for shocks in back. As you can probably see most of my rear suspension stuff is either used or hand-me-downs that I got in exchange for work I did.

My rear end doesn't seem to have much squat or anti-squat regardless of where I set my shocks. If I can figure a way to do it, I may try raising my IC to get a little more anti-squat then try to control it with the shock.

On the slide-a-links, I run about a 1/16" gap (no preload, bushing almost touching). With your Caltracs, you don't have the option of leaving a gap . . .

With your Caltracs, you don't have the option of leaving a gap . . .

I absolutely do.

I never realized that the bar was two piece on the CalTrac. Do you leave a gap or light preload?

The bar on Cal Tracs is one piece with rod ends. The "gap" is adjusted where the "lever" contacts the spring. http://calvertracing.com/caltracs.php If you look at the picture and look at the top of the leaf spring there is a silver tube/bar, that's where the gap/preload is measured it is adjusted by making the bar longer or shorter bia the rod ends. The operation is very simple but, works very well. I can't wait to put mine to use.

I never realized that the bar was two piece on the CalTrac. Do you leave a gap or light preload?

The bar is one piece but I can choose to adjust the spring contactor pivot to positive, neutral or negative preload. I run mine with neutral preload. (no preload with driver weight)

Gotcha. I think we're doing the same basic thing then.

Will play with shocks if I can next time out. I might try tightening extension in the front too if I can't get any anti-squat out of the rear.

With the Calvert split mono's you're not going to get the separation that you did with stock GM mono's. I can show you any early video of my car leaving with the GM mono's and it's close to topping out the rear shock on launch. Now, with the split mono's you can barely detect any separation. The 60 foots being the same. The car is, however, hooking better and more consistantly than ever before.

With the Calvert split mono's you're not going to get the separation that you did with stock GM mono's.

Can I ask how the GM spring and Calvert spring differ in design? Is it spring rate that makes the separation different?

Spring rate. The stock GM monos are 120-130 lb. I'm running the 200 lb split monos from Calvert now. Much stiffer!

I ran your two videos a couple times and the first shows a little separation (barely) the second, I couldn't see any.

I did the same with mine and one shows no separation at all, the other shows a little squat.

All in all, I think our rear suspensions behave pretty similarly -- except I agree that I'd like to see a little separation to help "drive through" the wheelstand and keep the motion down track.

We'll see how things go when I do some suspension tuning on a decent track.

Thanks for the tips Garret

WoW! Sweet Alky, Eric

Thought you guys would enjoy these clips. Car went 10 teens at 130 mph first trip out. Still have some more tuning to do. These are all motor and running winter blend E85. I'm kind of nervous about turning on the N2O without a wheelie bar.

Got out of it when I realized I was not going the direction I wanted to. :eek: Sixty foot was 1.361

http://s29.photobucket.com/albums/c274/Eric68/?action=view&current=2009_04_04testandtunewall.flv

This one hooked and booked -- this was a 10.13 pass. Sixty foot was 1.358

http://s29.photobucket.com/albums/c274/Eric68/?action=view&current=2009_04_04testandtunenew427.flv

Motor is 427" SBC, AFR 227 heads, 13:1 compression, 260* roller cam.Nice car:thumbsup: I wouldnt even consider spraying that car till it was a solid 9 sec car, spend the time dial it in, you have somthing cool there.

When you do spray the car, start out small and work up. And use your delay timer! Hitting it out of the hole with an already good hooking car will only make it hook better and things can get out of hand real quick!

http://i16.photobucket.com/albums/b14/RonSS/Wheelie-1.jpg

Ron

Thanks guys.

I'm not too fired up about spraying it honestly. I definitely plan on using the delay timer.

Spring rate. The stock GM monos are 120-130 lb. I'm running the 200 lb split monos from Calvert now. Much stiffer!

So stiff spring controls squat and anti-squat? Is there an advantage to running a monoleaf, I mean a 200 lb spring is a 200 lb spring, mono or multi and should give the same control?

There must be something to the split design on the calvert springs.
They are stiff as a board, I was able to lower the car over an 1” in the rear
without worring about cutting the tires on the fender. Also when you
raise the rear and let the suspension hang it only drops about 4”, with
the stock springs it would drop a whole lot more. The calvert splits
just don’t move much either way which I think is the design more then
the spring rate. Since I don’t have a real engine in the car now I cant
say that it helps it hook, but just looking at the way the spring works
tells me it would really help a low 10sec (or faster) car hook better.
If youre in the 9s I would strongly recommend the calvert splits.
If youre in the 10s or slower I’d say just get some good adjustable shock.

I believe Calvert's springs are reversed engineered of the famous Chrysler Super Stock springs.

You want a stiff spring to prevent spring wrap-up, the reaction to the action of torque being applied, lost energy in wrap-up.

These things wont rap up, theyre about ½” thick.

My car is pretty slow, 11.80's...just trying to learn everything I can about how the suspension should work. My GW multileaf springs are front biased and pretty stout so I suppose they work similarly to those monos in that they control wrap.

On those monos are they very stout on the front half of the spring? That's the most important part right?

All of the spring is important. The front section locates the rear axle keeping it parallel & perpendicular to the centerline, depending upon the manual assembly of the all the body parts, day of the week, good work ethic, Boss likes you, etc.

The front section also transfers the forward torque of the wheels to the body to get the car to move forward, if a forward motion is selected, and keeps the axle from any reaction effect due to this forward motion, aka, spring wrap-up.

The rear section of the spring keeps the rear section of the body off the ground and gives a significant factor to the ride quality along with the shock absorbers selected.

Man, that was a group of smart arse remarks for a simple yes/no answer..........

My car is pretty slow, 11.80's...just trying to learn everything I can about how the suspension should work. My GW multileaf springs are front biased and pretty stout so I suppose they work similarly to those monos in that they control wrap.

On those monos are they very stout on the front half of the spring? That's the most important part right?

11.80 is NOT slow by any means.

Thought I would post a little update for you guys.

No more test and tuning, but we did put it on the chassis dyno. While on the chassis dyno we found an interesting problem with my 850.

The secondary idle adjustment screw was hitting the bracket for my N2O microswitch. This was acting like a throttle stop -- the secondaries were only opening about 60% and the primaries about 90%. It picked up 16 more rear wheel HP when we fixed that.

The mixture was good on the 850 and we only made a minor jet change to get best power. Overall, we picked up 18 HP with the 850 at peak HP. The 850 made 558 rear wheel HP, 470 lb/ft of TQ

We tested my E85 Dominator and found that it was dead lean. I added more and more jet to it until I had #104 jets front and back and a .081 PVCR front and back. It was still too lean, but I was out of jet and out of time.

With the Dominator we went from 542 HP and 456 lb/ft of TQ to 566 HP and 476 lb/ft of TQ. That was a gain of 24 HP and 20 lb/ft of TQ. The best part is that our gains started low and carried through the RPM band.

Prior to the dyno session, my best MPH was with the Dominator and it went 10.15 @ 130.2 mph. My best ET was with the 850 and it went 10.13 @ 129.3 mph. I also replaced my steel hood with a lightweight fiberglass pin on hood.

If the weather stays nice I'll be back at test and tune next weekend to see how much ET our dyno tuning got us.

Mo power = mo better Eric! Yeehaw!!! :thumbsup:

I was all excited to go to the track the other day, but it was crap from the get-go, a funny car burned up and only made two spinning passes for the night...so depressing. But...can't wait to read your next post about hitting 9's! :thumbsup:

Sounds like easy 9's now.

Paul, I'm following along too :yes: may catch a :secret: or two.

Eric.... 9.80's NA but 1st weekend of next month :D

I'd sure like to see a high 9 second pass on motor, that would be cool.

I think I figured out what was causing the Dominator to be lean too. I'm going to try swapping boosters in it before next weekend and do some testing. It would be sweet if the car would run a 10.0 with the 850 carb and into the high 9's on the Dominator.

:thumbsup:I was thinking with your gains this weekend you'd see 9.9's with the 850 and maybe 9.8's with the Dominator.:yes:

Eric, are you still running an 8.5" 10 bolt?

No, I'm running a Moser 9" now.

did you switch because of the obvious punishment it would be subjected to or did the 10 bolt let go at some point?

keep up the good work, those times are getting "scary fast"

Eric, I was telling a friend about your dealings with E85 and sent a clip from your post. He was asking what type dyno and are they rear wheel numbers... He said if those numbers are right... 9's should be no problem.

His was 620 something and 9.1's (If I remember right)

Dynojet, Winpep 7 software. Yes, all rear wheel numbers. I have heard the Dynojet is a little more generous than the Mustang version, but I didn't go to get a number to brag about LOL.

dylanjans, the 10 bolt is fine but I got into some tire shake on an N2O pass last year and hurt an axle flange. Go figure . . . hurting a 33 spline axle. I need to replace that axle and should probably sell it on race junk to make my Wife happy and pay for all the stuff I bought this spring.

I have a 68 red Camaro also with Caltracs but still restoring it. It will be done in two months. You hook good at the track. What rear and front shocks are you using and what kind of leaf spring are u using. I have the Calvert set-up (split leaf mono, rancho 900 shocks, front 90/10's, and Caltracs). What is your pinion angle set at also.

Eric, its all listed at the bottom of page 3 of this thread. Pinion angle is about 3.5* down as I recall.