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#1
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to port or not to port
I have 542" mega block that is alcohol injected with a hat. It has the 440-1 aluminium heads. Indy did what they call a super modified porting job. A basic gasket/port match. They (Indy)quote these heads flow 334cfm. With a full port/polish application they advertise 379cfm. How much power is that? I have heard 70 hp. That might be enough to reach the 7.50 et I would like to run. And where is the power made? I'm not looking to spin the motor much tighter than the 7400rpm we go thru the lights. I've read that the bottom end power may suffer. The motor is in a 1750 lb. R.E.D.. Here are the best times it has run: 60'@ 1.07--330'@3.09--660'@ 4.81/142mph--1000'@6.22--1/4@7.63/173mph. I leave the line @3000, shift @ 6600 and as I said go thru @ 7400.
I have heard everything from don't touch it, to just polish it myself, to change the 2.19 valves to 2.25, to hell, do it all. That last part is what I'm looking to find out. It's approximately $1000---$1500 for the Indy porting. Is it worth it. I'm not a rich cat with a money tree out back. What do all you MOPAR readers think? I know all the chebby dude hope I leave it alone. Let's hear what all mother Mopar children think. Thanks mrmopar413@evi.net |
#2
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That there be a heavy duty engine. Without know the rest of the combo, I would say that a porting job on such an engine strong enuff to run those numbers would bennifit from porting.
I suggest saving the money for a full porting job and valves to boot. 70 HP? I don't think so. More is likely. Of course, depending on how far you take it. Did you post this in the drag racing forum? Race guru's there. I bet they would have a better grip on such things. The racers will pop in here at the performance section too. |
#3
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I agree with Rumble. More if done properly. Not trashing indy in the least, but check around your area, see if there are any PROVEN head porter/developers. i only say this, because a individual, who you can face-to-face with is more likely to take personal interest/pride in you outcome. The companies, with ten more customers waiting have to move on.
If the work is done correctly, you'll have more power everywhere. Yes, even off-idle response. But your entire combination(CR,converter, net lifts, rpm-range, header fit/size and more) will need to be considered. You just can't get that through the mail. |
#4
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Sounds like you have a awsome combo there! Dont let some guy port those heads with a dull spoon in his back yard! Send them to the best, like Ray Barton! Let him cnc port those suckers!
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#5
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Get hold of Ron at Texas Performance in Houston, he knows "who knows and who doesn't" in your area.
He also runs Mopars you probably know him anyhow..... Isn't it strange how the best in the business...Ron, Jerry Dooley(BG), Jim Doyle and many others who could build anything they want all run Mopars????strange phenominum.... I also Understand that Garte Engines has seen the light and is now switching from the one brand chevy catalog and added a new page....MOPAR 360 and 410's for sprint cars.....they've seen the light and it's the little yellow one in the win lane....hahahaa |
#6
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Ron is an old and very dear friend of mine. We go back to the late 70's. Texas Performance is one of only three decals on my car.
Thanks for the reply. I'll tell Ron and Linda you say hi.. |
#7
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cuda66273, glad you understood what I was trying to say, and could add vauable info.
Good luck with the results, 413, but sounds like you won't need to rely on it. This is an example of a real "Direct Connection" |
#8
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Moeflo, the combination I have described has been together for a few years. Until this year I'd always qualified # 1,2,or 3 at the Houston Raceway Quick 32 program. Hell I even finished 2nd in 01 where it took an 8.79 or better half the season to just qualify. But the 608" fords, and 632" chebbies that I now have to play with have tremendous flo capacities. I knew that porting would definitely help, I just did not want to spin it as tight as the 7700 I use to with the 451" motor.
The other items you mentioned were 14.5 cr, BME aliminum rods, Wisco flat-top pistons, comp cam roller 660 lift 704 with the 1.6 rockers, 284 int, 288ext @ .050 with a 108 lobe separation. Believe it or not this combination would run week in and week out with only a pill change. I know the mph is a little short for the et, but that's the 9" spragless Hughes convertor. I see on your profile that you are a head porter, so in your opinion, how much gain would going to the 2.25 valves produce. How about if I polish the exsisting heads as they are, is there much gain there? If you haven't noticed I'm looking for the low dollar way to more power. I pretty well shot the ole wad when I build this baby. I'm going through the motor right now and it's damn expensive with new rods and all. I hurt a piston this Aug. when I dropped a valve. So I also will be buying valves, retainers,and a sleeve for # 8 hole. I'm going to throw the original e-mail over to the drag race side and see what they offer up. Thanks for you input. |
#9
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Yikes ! ....that's really cranking! the heads would be generating a theoretical 762 HP of flow
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#10
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I like your combination. The only problem you have is you are getting out spent. (damn common problem)
On going up to a 2.225" valve, it will depend alot on how the port is devoloped, to work with it. It is difficult to gain the "math-based" gains promised by the switch, as additional valve-shrouding can compound some problems with a near as-cast port. The polishing probably wouldn't offer any measurable gains. I think now's the time to load up your heads/intake/headers, and see Ron. You know and trust him. Calling on his epertise, will keep you from saving money in the wrong places, which is very expensive. |
#11
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Fast one. My comment on math-based increases, was not directed at your calculations. You message went up, while i was writing mine.
But, this motor, is reaching the point where some, somewhat extensive work will be required to realize these gains. |
#12
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That's ok Moe, no offense here, I only use the maths as a guide, lots of other factors at work when putting a combination together.
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#13
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My Ole buddy Ron
Mmopar413:
When you see Ron be sure and mention that we met here...I order nearly daily from Texas Performance, Ron gives me the best service in the industry and always top quality advice. Also ask him why after spending...let's just say 6 figures with him over the past 8 years I still have never recieved a DECAL for MY car? He knows me best by "Don from Oree-gone".....the Guy without the Tx. Performance decal... Tell him if I see him in Indy, he'll be buyin' lunch... |
#14
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cuda66273,
I'll see Ron next week. I think you'll be having Texas Performance decals coming your way. Thanks to you , and all mother's children for the kind and guiding words. I wish all of you could experence the rush of power this baby makes. I'm new to the chat circle. I'll try to catch up to all you pro's soon. Of course I am quite use to leaving last and catching up quick--- if you know what I mean. Time for breakfast -- SEE YA!!!!!!!! |
#15
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You ever run into Denny Burton at the track?
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#16
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I have not seen Denny in years. I don't know if he moved, passed on, or just have been missing him.
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#17
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He's alive and well from what I understand......he's working for T. Wayne Welch as Crew Chief on his asphalt car.
He's running that circuit down there with the Davidsons, David Starr and Lege. Dead are you kidding ...he's too miserable to bury...the DEQ wouldn't allow the soil contamination....LOL |
#18
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That's Denny alright.
I try not to associate with the circle group too much. I'm going in circles most of the time without having a pace car to help me. |
#19
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Well if you see him around tell him I'm looking for him and see if you can get a number for me...thanks
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#20
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Now let me get this straight.
You want two Texas Performance decals, and one Denny Burton phone number: would you like fries or a drink with your order? ha ha ha ha! Gary |
#21
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I'll pass on the Burton Phone number..I'm on a diet and A$$holes are not on my list....LOL ...actually I got it from Lege today....of course it's Monday so he's not around.
But you can supersize the TxPerf decal...LOL |
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