[MEJ1990TM]

It was suggested to me to post the engine specs out of this Chevelle to see if it could run a 13.20. I've been told that is the fastest the car ever ran. (Long before I was born) But tonight I was told it wasn't possible.

So here goes.

1966 L78 that has been bored to 402. 12:1 pistons. Closed chamber heads. I can't know what intake it was running at the time. Holley 650. Stock cam out of a crate LS6. (Which I've been told is the same as the L78 solid lifter cam) Also running a set of Hooker Headers. It was no doubt running uncapped at the time. Also had Mccleoud clutch that I've been told hooked up solid right away.

Trans is a M22 with standard gear ratios. Rear end I am not sure of the gearing. It turns 3500 at 65 in 4th. 3.73's maybe?

So is it possible for this combo to propel a '70 Chevelle into the 13.20 range?

Now I believe what my dad has told me to be true. He doesn't have a reason to lie ,or "fib" as it was suggested, to me. He has been building and tinkering with cars since he was 15 years old.

If you don't believe it is possible please say what ET's you think would be possible with this combo.

 

[MEJ1990TM]

The one thing I forgot to add is it was also running double valve springs. Not sure if that would make a difference.

 

[kettbo]

Yes, 13.2 sounds similar to my friend Perry
396 +.030 M-22 3.73 gears.
With old slicks, no posi, he ran 13.4 but at 114 IIRC

remember, 65 and 66 blocks take special cam bearings and need a groove cut in the last journal on the cam

For comparison, look in my signature for what a 8.8:1 454 with mild cam can do on 87 octane

 

[BillyGman]

I'm not really sure why it would even matter to you whether the car did that so long ago or not, but FWIW, I don't see why anyone would find it so hard to believe that a combo like that ran low 13's in the quartermile. And BTW, those might be 4.10 gears that are in the rear. You didn't say what the rear tire height is/was, but if it's 27" or taller, my guess would be 4.10's based on the info you gave. I had 26.5" tall rear tires with an M20 transmission which ofcourse has the same fourth gear ratio as the M22 trans does, and 3.73 gears in the rear, and the engine reved at 3,200 RPM at 70 MPH.

 

[MEJ1990TM]

Thanks. :thumbsup:

I was thinking that a 13.2 sounded reasonable too. The car was never built to be a monster. It was built to be a daily driver that had some get up and go.

 

[texasgilbert]

My brothers 70 Chevelle with a big block, .515 lift hydraulic cam, turbo 400 stock converter and 3.08 gears runs a flat 14 second quarter. I think the 13.20 is easily possibe with your combo.

 

[MEJ1990TM]

I'm not really sure why it would even matter to you whether the car did that so long ago or not, but FWIW, I don't see why anyone would find it so hard to believe that a combo like that ran low 13's in the quartermile. And BTW, those might be 4.10 gears that are in the rear. You didn't say what the rear tire height is/was, but if it's 27" or taller, my guess would be 4.10's based on the info you gave. I had 26.5" tall rear tires with an M20 transmission which ofcourse has the same fourth gear ratio as the M22 trans does, and 3.73 gears in the rear, and the engine reved at 3,200 RPM at 70 MPH.

It matters to me because it was being insinuated that he was being less than truthful with me. And that offended me. Also the fact the only thing that has changed is the carb. I thought it had a different intake on it, but I just found out it is the same intake that is currently on the car.

I don't know how tall the tires are. The wheels are 15x8.

Thanks for the info.

 

[Wolfplace]

It matters to me because it was being insinuated that he was being less than truthful with me. And that offended me. Also the fact the only thing that has changed is the carb. I thought it had a different intake on it, but I just found out it is the same intake that is currently on the car.

I don't know how tall the tires are. The wheels are 15x8.

Thanks for the info.

=
I don't know who it telling you it could not be done but they are full of crap
It most certainly could have been done & was done many times, not at all unbelievable
And this comes from someone who happened to be around back then

Example
This was pretty much a 425HP 427 with a 4speed & 4,56's, one of many toys I had "back in the day"
It was driven almost every day & ran in the mid to hi 11's
This was probably 1970-71, don't remember for sure.

 

[BillyGman]

=
I don't know who it telling you it could not be done but they are full of crap
It most certainly could have been done & was done many times, not at all unbelievable
And this comes from someone who happened to be around back then

Example
This was pretty much a 425HP 427 with a 4speed & 4,56's, one of many toys I had "back in the day"
It was driven almost every day & ran in the mid to hi 11's
This was probably 1970-71, don't remember for sure.

Would that^ be the young Mr. Lewis behind the wheel?

 

[MEJ1990TM]

Well I do believe this settles that particular debate. :thumbsup:

 

[Dave]

=
I don't know who it telling you it could not be done but they are full of crap
It most certainly could have been done & was done many times, not at all unbelievable
And this comes from someone who happened to be around back then

Example
This was pretty much a 425HP 427 with a 4speed & 4,56's, one of many toys I had "back in the day"
It was driven almost every day & ran in the mid to hi 11's
This was probably 1970-71, don't remember for sure.

Is that a pterydactyl, I see in the sky above the car?

 

[Elcoman]

Michael, you have been on this site how long?! You should know the answer, unless you spend too much time in BR.

 

[MEJ1990TM]

Michael, you have been on this site how long?! You should know the answer, unless you spend too much time in BR.

I'm not quite sure what you mean Jay. It was the person who told me I was wrong that said to put the specs up here in the performance section to begin with.

I never really ventured into the mechanical forums because not much was being done to the Chevelle. But now that it is being worked on I want to get learning. :thumbsup:

 

[Wolfplace]

Is that a pterydactyl, I see in the sky above the car?

Damn,,, it wasn't that long ago,,,,

 

[Dave]

Damn,,, it wasn't that long ago,,,,

If I knew how to photochop, I was gonna add one in there.

 

[Elcoman]

I'm not quite sure what you mean Jay. It was the person who told me I was wrong that said to put the specs up here in the performance section to begin with.

I never really ventured into the mechanical forums because not much was being done to the Chevelle. But now that it is being worked on I want to get learning. :thumbsup:

:thumbsup:
I was just teasing you. I am just trying to make up for the vid.

 

[Motorhead62]

=
I don't know who it telling you it could not be done but they are full of crap
It most certainly could have been done & was done many times, not at all unbelievable
And this comes from someone who happened to be around back then

Example
This was pretty much a 425HP 427 with a 4speed & 4,56's, one of many toys I had "back in the day"
It was driven almost every day & ran in the mid to hi 11's
This was probably 1970-71, don't remember for sure.

HAHAHA!

Mike you ROCK! :yes:

 

[FRYNTYR]

Why was I not surprised Dave would be all over that! LOL!

As for the 13.20's. I could see 12's with some tuning pretty easy. No reason to think it wouldn't run 13.2.

 

[LS7]

A few years ago my buddys 66 stick car with a stock 396, oval port small valve heads with L88 cam ran a series of low 13 second passes on a TT night before finally clicking off a 12.80. :thumbsup:

 

[creeper72]

Yes, my 350 ran 13.20 in a 72. Nothing special about the motor - stock heads and a HYD cam.