Well I was running a consistant 13.03 with the 100 shot of NOS, never dipped into the 12's, so I just had to try the 150 shot As soon as i hit the button, BOOOOOOM. I did a compression test and I have 0 pounds in pistons 1 and 2 and about 170 on all the rest. Does anyone know where I can can find Jahn's 11-1 pistons?????? Now that I am going to have to tear down the motor, I think I might try beefing it up a little. Do you guys have any suggestions???? Right now I am bored out to 238 can I go any further???? Thanks for the advice!!!!! Keep up the good work!!!!

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D.J.
67 Cuda
Slant Six Powered

Have you torn it down yet? No sqeeeze side by side sounds more like a head gasket.

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Official Cookie and Mater Tormentor.

How do the spark plugs look, any "aluminiumized" (metal sprayed) tips?
Any of the plugs smashed-up?
If not, head gasket failure.
DD

I tore it down tonight, and I see no visible damage to the pistons or the cylinder walls, but it was very obvious that I blew the head gasket. There was a 3/4 inch hole blown through the gasket between cylinders one and two, and another one on the bottom side of cylinder one. I have a couple questions though, what is the BEST head gasket I can get. I want to be able to run nitrous with no problems (100 shot, no more 150). One thing that I saw when I tore down the motor that was reassuring was that I do have flat top pistons. Another question, I had some pretty good blow down coming out of the haeders right off the head (black marks on the head), should I double gasket the Intake/Exhaust gaskets, or does anyone have any suggestions on that. Thanks for the help everyone.

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D.J.
67 Cuda
Slant Six Powered

Can't really help on the gasket. I am running a solid copper gasket, with an "O" ringed block, on the engine I am running now. On a previous engine, I used the Mopar "shim" gasket, and did blow it once. I thing a Felpro might work OK. I would suggest retarding the timing a couple degrees. A blown head gasket is a sign of detonation. Also make sure you are not going lean, on one or two cylinders.
For a intake/exhaust gasket, contact the Cox Bros.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I *know* i'm gonna make a fool outta myself but here I go... What's an o-ringed block? I'm trying so hard to figger out.... maybe we call that diffrent way down here (most of the words makes instant sense and you don't have to crack your head open, but this one bited me in the....)

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

I don't think that I can retard the timing anymore, I am sitting at 500 rpm at idle in gear, if I go any further, I have a hard time starting it. Also, do you have a website for the Intake/Exhaust gasket? Also, I have a question about my ignition, I am running MSD ignition, does anyone make a racing distributor for a slant six, or does it not make any difference? Thanks for the help guys!!!!!

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D.J.
67 Cuda
Slant Six Powered

http://www.highperformancepontiac.com/t ... UpPowerbb/

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Cox Bros Columbus Ohio has some nice thick gaskets they stamp out there selfs Thanks Ron Parker











Hell Hath No Wrath Than A Possum Scorned

I forgot the phone number Cox Bros Fabircation
614-268-9920 Thanks Ron Parker

You may have to do what I am going to do. Weld up the advance slots in the distributor so you can run more intial so it will idle, but limit total to a number that will not destroy parts.

No aftermarket distributor available for the Slant.

I have a regular Fel-Pro head gasket in mine. I am at almost 11-1 and did not blow it out after 4 150 shot passes last week. I have my timing at 30* total, vacuum advance unhooked completely, and a mixture of 100,111,and 114 octane in the tank. MSD6-AL for ignition, shifting at 6000.

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Official Cookie and Mater Tormentor.

Hey Slantzilla, what carb are you running. I am running a Holley 570 straight out of the box. I have to shift at right around 5200, and that's pushing it. Also, are you running a micro switch for your NOS, the way my carb is set up, I don't see how I could mount one, so I have to use the button. I pretty much hit it off the line though. Is there anything else that I can do so that I won't have any problems running NOS?? Thanks for the help!!

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D.J.
67 Cuda
Slant Six Powered

I am running a 390 Holley on a Clifford intake and a 1" open spacer. I also had the carb plate for the intake milled open instead of the 4 hole setup.

I run mine on the horn button. I did make a bracket for a micro switch, but it is too short on the Clifford intake. (I started with an Offy) I purge through the motor, that is why I am on a button.

Biggest things for spraying. Good fuel pressure, retard the timing, colder plugs, and run the absolute best gas you can.

I run a Holley blue pump and regulator and start with 8.5 psi fuel pressure. By the end of the run it is down to around 7.5. I also have a nitrous pressure gauge and bottle heater. I try to keep bottle pressure between 900-1000 psi.

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Official Cookie and Mater Tormentor.

I have a single pickup no advance distributer for a computer controled slant (not good for a street driver). Timing is set at 24 degrees all the time. My compression is less then 8-1(was going to be turbo motor). I use Unocal 114 octane leaded. Bottle pressure (heated) 1050, fuel pressure 6.5lbs. Shift at 6,000 rpm. Short ground electrode NGK plugs. I have a holley 500 cfm 2 bbl. on a modified stock 1 bbl manifold. Micro switch on the carb, and a button on the console for backup. 150 hp shot.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I run #25 Autolite plugs. Pulled them after the other day and they actually looked rich. That was probably from driving back to the trailer though.

Next stop, a 200 shot.

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Official Cookie and Mater Tormentor.