Redline for 289 V8?

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Mstng67289

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Apr 29, 2003

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Atlanta, GA

Jun 28, 2004

#1

• Jun 28, 2004

• #1

I'm curious as to what the redline would be for a remanufactured 289 V8 with a hotter than stock (not too hot though) cam, stock heads, and stock bottom end. Right now I'm into the 13's with shift point being at 5500 RPM, but I don't want to be taking the motor that high if I shouldn't. Any thought?

 

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65stang289

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Mar 5, 2003

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Fort walton Beach FL.

Jun 28, 2004

#2

• Jun 28, 2004

• #2

what do you have done to the car. Get into it a little more.

 

LMan

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Aug 10, 2002

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Mom's basement

Jun 28, 2004

#3

• Jun 28, 2004

• #3

If by 'stock' you really mean stock, you wont get much if anything after 5500. No porting? Nothing?

I would not push it any higher with a stock bottom end, specifically the rod bolts (if they are really stock). They tend to fail catastrophically at higher RPMs/repeated abuse.

 

Max Power

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Jul 31, 2003

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St Paul

Jun 29, 2004

#4

• Jun 29, 2004

• #4

Any higher than 5500rpm you will start pulling the press in studs out of the heads.

 

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Mstng67289

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Atlanta, GA

Jun 29, 2004

#5

• Jun 29, 2004

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Mods aren't extensive on the interior of the block. It's a remanufactured 289, so I'm guessing it's been bored maybe .01 over, just put a new edelborck performer intake on an a 570 cfm Holley street avenger carb on it, flowmaster duel exhaust w/ h-pipe, pertronix coil and ignition, and a hotter than stock cam was done by the previous owner. I can dip into the 13's by use of the T5(Z) tranny and 3.55 gears in the rear-end.

Should I get my heads modified to accept screw in studs and a good set of roller rockers? How about a girdle for the bottom end?

 

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GaPonyFarm

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Jan 2, 2004

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Columbus, GA

Jun 29, 2004

#6

• Jun 29, 2004

• #6

You're not getting anything for the extra abuse... shifting at 5500 is about where I would be, with what you have.

 

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Mstng67289

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Atlanta, GA

Jun 29, 2004

#7

• Jun 29, 2004

• #7

so what do y'all think would be a good shift point for the car now that you know the mods? 4500? 5000?

 

HistoricMustang

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Apr 11, 2003

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Confederate States of America

Jun 29, 2004

#8

• Jun 29, 2004

• #8

I see not problem shifting at 6000. After that she will stop breathing.

Running at a constant 6000 is another story.

At the track I shift in the 6000 to 6200 range and run as high as 7000 for extended periods of time. This is a small block or as I like to say - a sewing machine and they can turn a lot of RPM's for short periods of time in stock form.

HistoricMustang
www.historicmustang.com

 

M

Mstng67289

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Jun 29, 2004

#9

• Jun 29, 2004

• #9

HistoricMustang said:

I see not problem shifting at 6000. After that she will stop breathing.

Running at a constant 6000 is another story.

At the track I shift in the 6000 to 6200 range and run as high as 7000 for extended periods of time. This is a small block or as I like to say - a sewing machine and they can turn a lot of RPM's for short periods of time in stock form.

HistoricMustang
www.historicmustang.com

Click to expand...

I dunno I don't think I'd EVER take it that high unless I had some extensive bottom-end work done. ie: larger main cap studs, stud girdle, and for the top end: screw in studs and roller rockers.

 

D

D.Hearne

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south louisiana

Jun 29, 2004

#10

• Jun 29, 2004

• #10

Mstng67289 said:

I dunno I don't think I'd EVER take it that high unless I had some extensive bottom-end work done. ie: larger main cap studs, stud girdle, and for the top end: screw in studs and roller rockers.

Click to expand...

I've turned a stock bottom ended 5.0 up to 7500 rpms, without problems. Only mod there was ARP rod bolts. And these were installed into the remanufactured ( $340 parts house special ) short block after I brought it home. 6000-even 6500 shouldn't be a problem for a 289. Now as for sustained rpm's that's a different story with stock rod bolts.

 

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Mstng67289

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Jun 29, 2004

#11

• Jun 29, 2004

• #11

Yes the RPM range in question is a sustainable RPM. I could care less about short bursts.... what I'm worried about is taking it to the track and having to be able to sustain a high RPM and having a rod shoot out the side of the block or blow a main cap... or something else that shouldn't have gone wrong had I taken a lower RPM.

 

HistoricMustang

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Confederate States of America

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#12

• Jun 29, 2004

• #12

Stuff happens when you push the limits.

If you are "worried" about the bad stuff taking place then perhaps a second thought about what you are undertaking.

Crap happens at the track or even on the "street".

If you do it enough something is going to give way. Perhaps the motor, perhaps you hitting something solid like a wall or guardrail.

HistoricMustang
www.historicmustang.com

 

brianj5600

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Sep 19, 2003

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Jun 29, 2004

#13

• Jun 29, 2004

• #13

6500 should not be a problem for drag racing. Road racing is a different story. Since you are talking 13 sec, I'll ASS U ME that you are not going to be doing 30 minute sessions on a road course. I know that 5/16 rod bolts are small, but so is the stroke on a 289. I ran a 302 for a summer on the street and 2 or 3 trips to the strip a month with N2O shifting at 6500 w/o any problems. I have never heard of anyone breaking a rod, or block w/o a serious power adder.

 

D

D.Hearne

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Jun 30, 2004

#14

• Jun 30, 2004

• #14

Mstng67289 said:

Yes the RPM range in question is a sustainable RPM. I could care less about short bursts.... what I'm worried about is taking it to the track and having to be able to sustain a high RPM and having a rod shoot out the side of the block or blow a main cap... or something else that shouldn't have gone wrong had I taken a lower RPM.

Click to expand...

When I say Sustainable RPM's , I'm referring to the type of rpm's that Historics car see's, on a road course or a circle track. Not drag racing where the motor just see's high rpms for very short periods of time. Your 289 isn't going to throw a rod or blow a main cap at 6500 rpm's, unless some nimrod who didn't know his ass from a hole in the ground assembled the motor