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Author
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Topic: Best Mod for engine
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streetstang67
Journeyman Posts: 31
From: SC, USA
Registered: Nov 2002
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posted 12-29-2002 10:00 PM
   
I am wanting more power from my car...Right now, its an internally stock 289 with an Edelbrock performer intake, holley 600 carb, and hooker comp headers with dual exhaust. I'm looking for the most power for the money. I thinking about: massively porting and polishing the factory heads, or getting 351W heads and doing that, or buying some less expensive new heads to bolt straight on, or I could get a new cam and 1:7 rocker arms, or I could always get nitrous, but I do want this motor to last. Anyway, I sure many of you have done some of these things to your car and you know how much power each one adds. What do you think is the best thing to do without "breaking the budget". By the way, I'm not real experienced with engine work, so installation will cost too.Thanks in advance
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Moneymaker
Administrator Posts: 16754
From: Lyons, IL, USA
Registered: May 99
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posted 12-29-2002 11:18 PM
If it's acceleration you want, a gear is in order. If you want power than a nice cam like a Comp 270S, some good rocker arms, and a nice set of aftermarket World Products heads will give you about a 50 HP increase for less than $2000 plus labor.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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streetstang67
Journeyman Posts: 31
From: SC, USA
Registered: Nov 2002
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posted 12-30-2002 01:22 PM
What gears do you suggest...right now I have the stock 2.79:1 open gears. Do you know of any donor cars that I could get good gears and a locker that would easily go into my rear axle? I want streetability, and "decent" gas mileage.
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Moneymaker
Administrator Posts: 16754
From: Lyons, IL, USA
Registered: May 99
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posted 12-30-2002 01:47 PM
If it's an 8 inch then some 3.80's would give you the most bang for the buck.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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mustangs68
Moderator Posts: 16063
From: Hampton,Virginia,USA 1968 Fastback & 1995 Vert MCA#39406 M&M #12
Registered: May 99
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posted 12-30-2002 03:21 PM
The above suggestion by Alex are the same I have on my 289 '68..plus a bunch more..excellent and I have 2:79 gearssam
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streetstang67
Journeyman Posts: 31
From: SC, USA
Registered: Nov 2002
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posted 12-30-2002 06:27 PM
3.80 seems too much....I know it will make it a lot faster, but wont that kill my top speed and gas mileage? Also, Wouldn't that make cruising at 50mph require the engine to be turning 4000 rpm or something like that?
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V8 Thumper
Gearhead Posts: 2508
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 12-31-2002 03:01 AM
Not at all. My 3.70's turn 3400 rpm at 75 mph on 26" tall tires  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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sigtauenus
Gearhead Posts: 1669
From: Beaufort, SC
Registered: Jun 2000
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posted 12-31-2002 08:37 AM
Doesn't putting taller tires on lower the rpms at any given speed over shorter tires?
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V8 Thumper
Gearhead Posts: 2508
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 12-31-2002 08:58 AM
Yes ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Moneymaker
Administrator Posts: 16754
From: Lyons, IL, USA
Registered: May 99
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posted 12-31-2002 12:12 PM
With a 27 inch tall tire and 3.80's you will turn no more than 3k RPM at 60 MPH. Probably a bit less.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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streetstang67
Journeyman Posts: 31
From: SC, USA
Registered: Nov 2002
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posted 01-01-2003 08:30 PM
You suggested the Comp 270S cam. I know for this, I would also need to get new rockers and timing chain and lifters. Is a stall converter an absolute must? Also, the main question: how much hp would this cam add?thanks again
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Toronado3800
Journeyman Posts: 92
From: St. Louis, MO
Registered: Jul 2001
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posted 01-02-2003 09:33 PM
Could buy a blower, especially if your compression is lower than 9 - 1. One of my friends put one on a run of the mill Chevy 350, all he did was tune the carb. Engine ran great for at least a thousand miles before it melted a hole in two pistons  Whats the going rate for a good investment, 1 HP per $10 spent? Street, my first time through I started buying all the "acessories" which would swap from the engine I had to the engine I wanted or were not affected by a motor swap. Gears, Exhaust, Intake/carb, a new tranny. I hate doing internal engine work any more than I have to because if you goof it can cost big bucks.
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