What will 72 run?

[MikeyT]

Hi All,


I am just curious to hear people's opinion on what you think the Road runner will run?

Here goes 72 road runner with me in it about 3850 lbs.

440 engine 9.2:1 compression 915 heads (big valves with mild porting and valve jobs)
Lunati 703 cam 268/276...226/234 @. 50 494/.513 lift
TTI 1 7/8 headers (uncapped)
Eddy RPM intake
850 CFM Holley DB pumper
727 with 3600 stall 4:10 gears!
275/60/15 Nitto Drag radials

I would love to hear ET guesses, suggested shift points, and what MPH it will trap?

Thanks all!

 

[383man]

My guess would be low 12's. Ron

 

[Budnicks]

Sounds lie a good fun combo... Just a wild a$$ guess 12.71 @ 105mph... what does the cam card say for RPM range or limits, I would say {just a guess, hydraulic cam} with that particular camshaft, the shift point is probably around 6000-6200rpm {maybe slightly higher 1st & second gear}, but allot really depends on what valve springs & valve-train weight... should be fun she's no lightweight... any other work done to the trans, than the 3600 stall converter ??

 

[67 coronet]

id put it in high 12's depending on the rear suspention.if no mods,you are gonna get some tire slip for sure with that heavy of a ride.

 

[Budnicks]

any suspension mods ?? what kind of rockers ?? what kind of fuel pump ?? what size fuel lines & pick up/sending unit etc. ?? what type ignition system ?? just curious, it could aid in helping us guess...

good luck & have fun, that's what it's all about !!

 

[MikeyT]

Thanks guys, to answer

Hotter ignition. Rev n Nator ( orange box)
Performance mechanical fuel pump. 3/8" fuel line
No real mods to rear, other then gears, drag radials



- - - Updated - - -

Oh crane 1.6 roller rockers too

 

[cdr]

13.15 @ 102

 

[Danomt]

Kinda like the price is right. I am gona say low 13. Sound like a good combination.... depends on the air some......

 

[Budnicks]

Kinda like the price is right. I am gona say low 13. Sound like a good combination.... depends on the air some......

good point :iamwithstupid: , yeah air quality, altitude {relative air density} & track condition, sunny hot or cloud cover etc. or how it's driven too, all can be contributing factors...

 

[67Satty]

Your combo and mine are pretty alike (look in my sig for specifics and 1/8 miles times). You have better heads, more gear, but stock rear suspension and drag radials and less stall. If it hooks, it should do at least a 12.40 at 110 mph. If it doesn't hook, it could be anywhere from high 12s to low 13s.

 

[Sonny Black]

Sonny says; "with tuning & practice, jetting, different combinations".....
& a few runs under your belt........= 12.20's??

 

[MikeyT]

Well, looks like we are going to find out Friday night


Mikey

Thanks all

 

[67Satty]

Yeah, I think 12.20s are very possible if it hooks. I was being a little conservative with 12.40s with hook.

Are you going to Rock Falls?

 

[MikeyT]

Great Lakes Dragway at da grove! I will be happy if I get healthily into the 12's!

Mikey

 

[Jonnyuma]

I was gonna guess low 13s.

Does anybody else remember back when 400 HP was a lot and 13 sec was fast?

Man, I'm old.

 

[67Satty]

I remember when a mid 12-second street car was quick enough to beat anything on the street. Then nitrous entered the scene and all the mid 12-second cars became high 10-second cars and then it just kept escalating from there.

 

[67Satty]

Well, looks like we are going to find out Friday night


Mikey

Thanks all

Well??? What did it run?

 

[MikeyT]

13.8 at 102 mph.....I guess it is time to sort out suspension!!'n

2.1 60 foot time

Mike

I had a blast! I did not think to bad first time out

 

[Budnicks]

Hey my 105 MPH guess was pretty close, if you get the car to move better in the 1st 330ft, not jut the 1st 60ft, it will pay-off for sure, allot of you ET is made-up or lost in the 1st 330ft... suspension improvements, lightening & traction aids always help... did it pull hard ?? where was the problem ?? was it traction ?? or was it a tuning issue or bog ?? are you hooked yet ?? it's like a damn disease...LOL...

 

[cdr]

i got the mph dead on