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  #16  
Old 02-08-2007, 08:59 AM
red65mustang red65mustang is offline
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arns,
tripped over another example on the corral.net site

(duh!....arns85GT= arns302 ford....wonder if any of my brain cells are alive)

stock 5.0 block
220/220 cam (crane)
GT40p heads
BBK headers
normal/typical 5.0 add ons for peak hp/tq

graph is rwhp.....
note that there just isn't much hp/tq present till 3,000+ to get more low end "punch".....you listed your power band (cam) very similar

my point is, if your custom made pipes (way cool!) don't add a bunch at low rpms....it's not likely anything you did or didn't do
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  #17  
Old 02-08-2007, 11:37 AM
Arns85GT Arns85GT is offline
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Haha



V6 here. (sorry, no Mustang) Yeah, I'm playing with a 140 hp stock engine. I currently have 131 whp on the last dyno run, without headers.

The car ran its best time (stock) at 15.474 on the 1/4 mi. I'm hoping to do a little better.

You can see the log exhaust manifolds. They have an unequal length Xover pipe. Really bad design.

I'm hoping to get the car down to an honest 15 flat time with a Holley 390, some head work, and headers.

I know the car is capable of 12's with an SBC but I'm content to play with the 6 for now. This is my "little rod". Thanks for the help.

Arn
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  #18  
Old 02-08-2007, 12:42 PM
red65mustang red65mustang is offline
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arns,
I looked up the stock spec's, what jumped out at me is the stock rear gears are only 3.65 with a OD tranny (70mph=1800???, 28mpg)

if they are available, 4:11 gears will do what you want big time.....
that's what made all the old sports cars (MG's, Triumph, etc) fun....100bhp and deeeeep gears and small diameter tires......a blast around town.....6krpms was about 100mph "top speed"

definitely will help your ET (140HP/2700lbs)

drive safe
Red
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  #19  
Old 02-08-2007, 12:59 PM
Arns85GT Arns85GT is offline
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Odd thing

Thanks,

This is the odd thing. It is pretty well documented that the fastest Fiero on the 1/4 mi. is the 1985 4 speed with the 3.65 gears. One would think the lower gear ratio would do better, but that just isn't the case.

It has to do with the first 3 gears' configuration. Also the 4.11 came in the '84 tranny which has a much weaker case. Some guys have put the 4.11 gears in the '85 case and it works pretty well with v8 conversions, however, the 1/4 mi figures still work out that the 3.65 - 4 gear is the quickest. Go fig eh?

My GT ,BTW, is the second fastest stock 2.8 documented on the Fiero Forum. That's the trivia of the day. The fastest was also a 3.65.

Arn

Edit - the stock weight with all fluids on my notchback is 2552 lbs. The fastbacks are heavier.
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  #20  
Old 02-08-2007, 02:12 PM
red65mustang red65mustang is offline
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scratch the gears idea...I only looked at 1st=3:31 (good) and 4th=0.81(room to re-gear)
for the others, his 2nd=1.95 3rd=1.24!

congrat's on what you've done, hard to argue with a time slip
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