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Old 11-15-2012, 04:51 AM
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Quote:
Originally Posted by vinniekq2 View Post
curious,what mph and ets are you getting?Im thinking high 11s?or low 12s
My best ET was a 12.43
Best MPH was 108
Best 60ft. was 1.73

Not all in that order. This was all with the small cam

I did run a 12.47 on a 1.87 or 1.89 60ft. though.
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  #17 (permalink)  
Old 11-15-2012, 06:19 AM
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The car looks like it is performing as it should.If that is your E.T, with mufflers,its actually decent.

what I would check,or look to improve:
Do you get enough fuel at the end of a 1/4 mile race?

I believe a victor junior and 850 D.P. would add another 3-4 M.P.H.

If the manifold/carb/fuel delivery added 5 m.p.h. then,,,I would use the hooker 1 3/4 primary pipe headers.
if that helped,then I would change cams after looking what helped the most
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Old 11-15-2012, 07:52 AM
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The little cam normaily goes in 5 deg advanced. you want to cehck the timing before assuming it needs moving. You may have moved the big cam in the wrong direction.
If you did not degre it and jsut moved it to another keyway position.
This always gets you a inaccurate result.

Start degreeing your cams. you will go a lot faster.

12.4 @108 is fine for the little cam. the 60ft and et can be worked on.
launch. not enough gear if you want fast...
The high stall 4200 stall should produce the best ET with any cam.
The harder you leave, the better.

I bet that car weights more than you think.

A big solid will make more power and make the car faster but must rev to do that.
(gears) and the 4200 stall. Its going to have a rough idle and low manifold vacuum too.
Must have a free flowing exhaust to work. fuel system must keep up.
I don;t see you getting much further with 3.70 gears.

The heads need full porting to get the best from a camshaft.
the non platinum series 200cc IE is not near the Platinum series head.
need work to wake it up.
The 180cc IE head sucks....definatly needs serious work to get it going.
(modest out of the box flow for a 180cc head)

solid heavy casting head but needs work.
They were intended to be ported.

Solid lifter cam for your 406

Crane Saturday night special solid cam
Crane # 110921 or 110922 w lifters... makes a lot of street strip 406's go fast.
Degree it this time. 102 intake C/L ya it matters.
fix up the IE heads or swap to a good aluminum head (Profiler, Brodix IK200, AFR, Dart Pro 1)
use the 4200 stall and consider more gear.
The rpm manifold is fine.
A single plane manifold wants rpm,, will really like the gears, with that cam.
4.56's are not too much w a tall tire.
exhaust must be free flow or open. Get collector extensions.

Air-Lift rear air bags ("Drag Bags") work very well in those cars.
rear lower control arm relocation brackets help too.. launch traction.

Last edited by F-BIRD'88; 11-15-2012 at 08:22 AM.
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Old 11-15-2012, 08:26 AM
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Solid lifter cam for your 406

Crane Saturday night special solid cam
Crane # 110921 or 110922 w lifters... makes a lot of street strip 406's go fast.
Degree it this time. 102 intake C/L ya it matters.
280-288 244 252 .518 .536 106LSA 102 in C/L .026 .026 hot
when setting the valve lash cold et it at .020" to .022". it will be just right

Get busy on those heads. They need work.
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Old 11-15-2012, 08:35 AM
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f bird,that cam looks good to me,just not sure why you would advance that small of a cam in a 400?
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Old 11-15-2012, 08:53 AM
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Quote:
Originally Posted by vinniekq2 View Post
f bird,that cam looks good to me,just not sure why you would advance that small of a cam in a 400?
Torque.. highest average torque----power.

This is where this cam likes to be. 100 to 103 intake C/L
especially in a 406.

( the herbert ..510" cam would have worked better than it did if it was also installed correctly.)
101 to 104 in C/L..... I suggested 103 for this one.
Its all about finding the best sweet spot. You can play a bit withe the valve lash setting too, on a mechanical cam.
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Old 11-15-2012, 09:28 AM
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Im sure the torque would be huge,just figured that there is a lot of horse power left on the table as that engine would likely roll off the power about 5800 rpm
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Old 11-15-2012, 10:47 AM
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Quote:
Originally Posted by vinniekq2 View Post
Im sure the torque would be huge,just figured that there is a lot of horse power left on the table as that engine would likely roll off the power about 5800 rpm
Moving the cam effects the mid range torque more than the hP.

This car does not have near enough gear in it to worry about top end power
roll off. Its not reving high enough thru the traps.

There at lots of things/areas that need attention to get the MPH up.
Starting at the air cleaner.

If I can get 115.1 MPH out of my 9.8:1 vortec headed 406 in a #3530 car,
There is lots of improvment on this car to be found. (Even my car is still a work in progress)

The cam is just one area. You could work with any of the cams you got now and get improvments.
Start at the air cleaner and tires and work from both ends to the middle. The middle needs work too. (cylinder heads)

The crane solid I suggested has been shown to work very well in 406's like this.
There are even bigger cranes that work well but need RPM (gears, race converter, race single plane manifold and head flow.

Cam install position. You have to degree it to have a start point reference.
If you just wing it and "line up the dots" you get what you invested.

Vehicle weight reduction always works well. getting weight off the front end works well.

Last edited by F-BIRD'88; 11-15-2012 at 10:58 AM.
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Old 11-15-2012, 10:58 AM
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108 MPH..... what are the 1/8th mile ET and MPH?
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Old 11-15-2012, 11:30 AM
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There is no such thing as too much torque or too much power. Just not enough traction.
You can fix that on a cutlass. They are really simple. start with some air bags. They work.
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Old 11-15-2012, 11:47 PM
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The MPH in the 1/8 was 87 at best, I'm at the point of just running a 100 shot & call it good, but i'll need to re-install my 2800 stall, the 4200 just seems a bit much with a 3.70 gear.

Speaking of 3.70 gears, theres a few well in the 11s with these gears in there G bodys with 406s.
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Old 11-16-2012, 03:25 PM
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87 in the 18th and 108 in the 1/4 you are loosing 2.5 MPH in the last half of the run.
You car should be MPHing right at 110.5 MPH, as it is now.

What is the 1/8th et and 1/4 et from the same slips. (a few samples)

Nitrous and the converter stall: you re much better off with the 4200stall, (unless its wounded, needs servicing) especially with nitrous.

There may be other cars that are running 11's with a 3.70 gear but they are makeing a lot more horsepower and the car is likely lighter than your car is.

start by weighting your car, on a accurate scale, with you in it.

Are your heads the newer, revised port Platinum series 200cc heads? They are not the same as the conventional older Iron Eagle head.
Stock, modified, flow test?

you need to get your MPH way way up. (horsepower)

What was going on ith the car that the big cam didn;t work? Besides "it was hard to tune"
couple sample ET slips from that.

Nitrous is just the icing on the cake. You want to get the car to run like it should , on the motor.
Cutlass 's weight more than 3200 # with driver. The plain jane Malibu "Iraq-y- taxi is light. The Cutlass and Regal, not so much.

Last edited by F-BIRD'88; 11-16-2012 at 03:46 PM.
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Old 11-16-2012, 03:41 PM
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If your cutlass does weight 3200w driver and only does 108 in the 1/4 mile that engine is wounded (way down on power)
or the transmisson/converter is wounded or you are starving it for fuel.
just from your data I can see the car is nosing over between the 1/8th and 1/4 mile.
And its not from too much gear . thats for sure.
You are ruunning down the whole track on the converter

weight the car. You are going to need a very very short tire to make a 3.70 gear work.
On a Regal we did, we used a 23" drag radial with 3.73's P225-50-15. That car could have used even more gear and converter.
350CID, big solid that loved rpm.

Right now you are not trapping with near enough rpm, even for the small 224deg cam ( gear ratio.)
I bet you are barely above 5200rpm thru the traps.
what is the tire diameter? measured effective diameter from the ground to the center of the axle.

Last edited by F-BIRD'88; 11-16-2012 at 04:05 PM.
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Old 11-16-2012, 04:13 PM
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Right now you are not trapping with near enough rpm, even for the small 224deg cam ( gear ratio.)
I bet you are barely above 5200rpm thru the traps.
what is the tire diameter? measured effective diameter from the ground to the center of the axle.
You need to get the car to launch much harder (gears, tires rear suspension, converter and get the MPH way up (horsepower/weight ratio) 115 ish MPH for 11sec et's. 6000-6300 rpm shifts, 6600+ rpm trap rpm.
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Old 11-16-2012, 08:34 PM
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It WAS trapping around 5900 with the 4.11s & a 28" MT DR, I did have the car weighed on a reputable scale at the local rock cuarry plant, I wasn't too surprized of its weight, Its a bare bones cutlass, not the fancy ones, I'm only 145 lbs., so i'm a light weight, It would be nice if the car was heavier, it would explain its slower times, Now i did calculate converter slippage & it was saying 12%, that seems a bit high, I'm getting somewhat at my wits ends with this combo, Its like what the heck, I know it should run better but it doesn't, It feels like it just runs out of steam in high gear, it just doesn't pull, but on other accasions it seems better, maybe its fuel, but i'm running a 110 pump with 8 lbs. pressure, the fuel line is all good, so is the tank.
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