Another power estimate thread: 351W

SadbutTrue

Founding Member

May 1, 2002

2,390

4

49

Granada Hills, California

Jan 1, 2004

#1

• Jan 1, 2004

• #1

351W
.030 over
Comp 274XE cam
Weiand Stealth
Ported stock heads
1 5/8 headers into 2.5" exhaust
Flowmasters
MSD 6
Accel super stock coil

I asked for this before I think, but I did a search and couldn't find it. D'oh. Oh, and if anyone knows how much power would be gained with Trick Flow Twisted Wedge or Performer RPM heads added, feel free to enlighten me.

Thanks

 

12sec67

Active Member

Oct 6, 2003

1,301

1

36

San Diego, Ca

Jan 2, 2004

#2

• Jan 2, 2004

• #2

what compression? 10- 11.1 and what carb.

i myself would go for the afr's 165's at the least if you plan on buying heads.thats what i should have done.
head bolt on about 20 rwhp with edelbrocks

 

SadbutTrue

Founding Member

May 1, 2002

2,390

4

49

Granada Hills, California

Jan 2, 2004

#3

• Jan 2, 2004

• #3

ooops

compression would be probably around 9.5-10:1 (would do work on heads to increase it a bit), and initially i'd have a 600 edelbrock carb, probably later upgrade to ~700-750 holley or edlebrock. Use the 750 as your reference point.

 

SadbutTrue

Founding Member

May 1, 2002

2,390

4

49

Granada Hills, California

Jan 2, 2004

#4

• Jan 2, 2004

• #4

*bump*

 

Bullitt

Packin' Heat

Founding Member

Jan 13, 2000

2,743

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Houston, TX

Jan 3, 2004

#5

• Jan 3, 2004

• #5

with the setup you listed i get this from Engine Analyzer:

Ported Stock Heads:
387 HP @ 5500 RPM and 405 lb-ft @ 4500 RPM

AFR 165:
395 HP @ 5500 RPM and 406 lb-ft @ 4500 RPM

looks like a pretty good combo to me... your exhaust is probably holding you back a bit, but other than that looks good. the AFR/Ported difference would likely be a lot larger as it seems the head specs in Engine Analyzer are fairly aggressive (stock GT40 heads net 349 HP @ 5000, 384 lb-ft @ 4500).

 

SadbutTrue

Founding Member

May 1, 2002

2,390

4

49

Granada Hills, California

Jan 6, 2004

#6

• Jan 6, 2004

• #6

Bullitt said:

with the setup you listed i get this from Engine Analyzer:

Ported Stock Heads:
387 HP @ 5500 RPM and 405 lb-ft @ 4500 RPM

AFR 165:
395 HP @ 5500 RPM and 406 lb-ft @ 4500 RPM

looks like a pretty good combo to me... your exhaust is probably holding you back a bit, but other than that looks good. the AFR/Ported difference would likely be a lot larger as it seems the head specs in Engine Analyzer are fairly aggressive (stock GT40 heads net 349 HP @ 5000, 384 lb-ft @ 4500).

Click to expand...

thanks bullitt, and whoa, i was expecting more in the 330 range at the crank, with that combo looks like I'd make more like 300 at the wheels. Wow, and that is pretty crazy cheap too...

 

Bullitt

Packin' Heat

Founding Member

Jan 13, 2000

2,743

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47

Houston, TX

Jan 6, 2004

#7

• Jan 6, 2004

• #7

it's all going to depend on how good your port job and exhaust is...

that is probably a "best case" number esp on the head port job.

 

6

'69Stang

Founding Member

Sep 28, 1999

1,130

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38

Metro Detroit

Jan 6, 2004

#8

• Jan 6, 2004

• #8

I think the AFR 185's would be perfect for a 351w.

 

H

hotrodman

New Member

Dec 28, 2003

90

0

0

Boston ,Mass

Jan 7, 2004

#9

• Jan 7, 2004

• #9

i have 351w victor heads 2.05/1.60/ flow # are in@.700lift 291/ex.@700lift 198/ solid roller cam 246/256-626/648@.050 srp flattops 11.1 comp. super victor intake hp.750 carb with 200hp nos tko trans alum drive shaft s/s/bars 8pt. cage/lt.we.ft k-member 8.8 with 3.73s/ hoosier tires 27x11.50 15 car runs 9.98@135mph.havnt dyno ,last motor i dynoed the guy blew it up!all in a 83GT that i bought new .