1/4 mile times with 3.23 gear

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72 Dart, 5.9 Magnum, 210/220 @ .050 cam, 3.23 gears and 26" tire
 
Mill the heads?

Why don't you retard your cam a few degrees and see if it picks up the top end?

Its free :lol:
 
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Mill the heads?

Why don't you retard your cam a few degrees and see if it picks up the top end?

Its free :lol:
LOL.... the SM heads have a smaller CC than the factree cast I'm sure. And "Free" is one of my favorite words :) Right now it's an excellent driver. Any gas pump is fine, 60 mph is a yawner, idles like a stock 318 2bbl.
 
How much smaller? Are you really saying you have no idea what your comp is?

It should still be an excellent driver with anywhere from 4 to 12 degrees of retarding but you need to try it to find out.

Here's a very interesting engine with a generic 204/214 @ 0.050 112 cam that runs 6.99's in the 1/8th.

Randy331:"On a very cam limited engine, I saw more power on the dyno every time the cam was retarded from 101*, back to 109*.
I retarded the cam more latter, and the et went down. On the last change back to 116* icl, the car ran it's best ET/MPH with that engine. I think on that engine, with less than optimum intake duration, IVC was the predominant factor in the improvement. Improving VE by closing the intake valve latter, more than offset any negitives that occured with the other changes in valve events."

The engine specs are in this thread:

Smallest Cam..... - Don Terrill’s Speed-Talk

Its free.....Why not find out?
 
How much smaller? Are you really saying you have no idea what your comp is?

It should still be an excellent driver with anywhere from 4 to 12 degrees of retarding but you need to try it to find out.

Here's a very interesting engine with a generic 204/214 @ 0.050 112 cam that runs 6.99's in the 1/8th.

Randy331:"On a very cam limited engine, I saw more power on the dyno every time the cam was retarded from 101*, back to 109*.
I retarded the cam more latter, and the et went down. On the last change back to 116* icl, the car ran it's best ET/MPH with that engine. I think on that engine, with less than optimum intake duration, IVC was the predominant factor in the improvement. Improving VE by closing the intake valve latter, more than offset any negitives that occured with the other changes in valve events."

The engine specs are in this thread:

Smallest Cam..... - Don Terrill’s Speed-Talk

Its free.....Why not find out?
No clue what my compression is.... Interesting read for sure. 1000 passes to get there, though, won't be in my near future... LOL. 5.38's and 4200 stall either. I know retarding the cam will add top end power. As my car sits, it needs all the bottom end it can get to move as I'm probably 3400 lbs at the starting line, with 2.94 gears and a factory stock converter retarding the timing may not best fit my vehicle, but who knows, right?
 
Its a good example of you can always find more if you're prepared to go looking for it. Moving your current cam around may pay handsome dividends if you're prepared to go looking for them and the best part its free.

What's the cylinder pressure? It can tell you a lot about your engine.
 
Its a good example of you can always find more if you're prepared to go looking for it. Moving your current cam around may pay handsome dividends if you're prepared to go looking for them and the best part its free.

What's the cylinder pressure? It can tell you a lot about your engine.
I agree. Tuning never stops for me. Bad thing is, I have so many projects I tune on that "one" in particular doesn't get a lot of attention. I haven't checked cylinder pressure, I need to. You'd have thought I'd have done it with the cast heads then SM heads just for the comparison, but I did not.
 
I'm lucky I have only one :lol:

Do a comp test and get back to us.
 
I agree. Tuning never stops for me. Bad thing is, I have so many projects I tune on that "one" in particular doesn't get a lot of attention. I haven't checked cylinder pressure, I need to. You'd have thought I'd have done it with the cast heads then SM heads just for the comparison, but I did not.
Saw you were on the Gas Tap. I missed the live chat.
 
yes, i just happened to click on youtube and it said he was live. I think it was his first live. He joined our live a couple weeks ago.
Nice guy, too bad about Big Red. Sorry for the sidetrack.
 
Nice guy, too bad about Big Red. Sorry for the sidetrack.
Yes, seems nice. He's on a brief streak of bad car luck right now, hopefully it turns for him soon. I didn't even know about big red till he said it on his live. I joined late, so I missed the story. Just found metal in the oil I guess.
 
Best time for me was 12.8 with 3:23 gears and Cooper Cobra street tires but that was a one trick pony. Most of my times were 13.0-13.1
 
Best time for me was 12.8 with 3:23 gears and Cooper Cobra street tires but that was a one trick pony. Most of my times were 13.0-13.1
Nice run for a slant six 1 bbl with a slipping clutch !!! No wait! You had the eddy head 440 on a 200 shot :BangHead:
 
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That was my X headed small block with a 3500 stall. Switched to 3:91 gears, RPM air gap, slicks and tuning to get down in the 12.2's. Now I have bigger cam, 5200 stall and trick flow heads
 
Member Prosport on here( hopefully he sees this) went mid 10’s with his sassy grass pump gas big block Duster street car with 3.23 gears out back.
 
Thanks Don(B3422w5), I sold my Duster locally but it was a fun street car, I put a very mild 500" low deck in it, 93 octane, small solid cam, small 1.75" headers, ported Eddy heads, 950hp 4150 carb, 727 trans with a 9.5" converter that had way too much slip, woulda been quicker if I had it tightened up. 8.75 with 3.23 gears.
I drove it to the track about 50 min away, ran 10.69 at 124 and drove it home. 275/60/15 drag radials.

received_1618998898143897.jpeg
 
Thanks Don(B3422w5), I sold my Duster locally but it was a fun street car, I put a very mild 500" low deck in it, 93 octane, small solid cam, small 1.75" headers, ported Eddy heads, 950hp 4150 carb, 727 trans with a 9.5" converter that had way too much slip, woulda been quicker if I had it tightened up. 8.75 with 3.23 gears.
I drove it to the track about 50 min away, ran 10.69 at 124 and drove it home. 275/60/15 drag radials.

View attachment 1715695464
Love the year, love the color, love the street driver, love the time slip,
 
I went 16.7 at Bandimere with my Barracuda back in the early 90's with 3.23's and a fairly stock 318....MAN that thing was slow, but I thought it was fast back then, lol!

My first car was a 74 Dart four door, 225 slant six and 904. It ran mid 16s first and only time I had it on the track. Only way I could shave off a tenth was to inflate the tires to the max lol

Believe it had a gear ratio below 3, whatever came in the 7 1/4 years. 2.71?
 
My first car was a 74 Dart four door, 225 slant six and 904. It ran mid 16s first and only time I had it on the track. Only way I could shave off a tenth was to inflate the tires to the max lol

Believe it had a gear ratio below 3, whatever came in the 7 1/4 years. 2.71?
mid 16's with a stock /6, auto, highway gears is really, really good
 
It's all about your trap/finish line rpm. If you have a 3:23 and just shift into 3rd when you cross the finish line you could use a taller gear to your advantage.
 
13.37 @102 MPH.

Pretty stock '69 340 with drag radials, 3.23 sure grip, A-727 transmission.



Stock '69 340 X heads, no porting.

Mopar Performance dual plane aluminum intake (copy of the stock '69 cast iron intake) Edelbrock 1405 carb.

Cast iron '69 340 exhaust manifolds with 2.25 inch exhaust

View attachment 1715661702

Was that with the MP P4452761 cam or have you changed it ?
 
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