How Much Horsepower
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How Much Horsepower
I've put this list together of modifications that I want to do to my V6. I know some of you are thinking that for that price I could get a 5.2 or 5.9 but I like the idea of a fast V6. I am wondering how much horsepower all of these would add.
1. Summit, Differential, No-Slip Traction System, 29-Spline, Mopar8.25 $488.95
2. HughesEngine Hydraulic RollerV6 Camshaft $200.00+ Core
3. Summit, Rocker Arms, Pedestal Mount, 1.7 Ratio, Aluminum, FullRoller $265.95
4. Summit, Flowmaster 10, Single in/dualout $69.99
5. FastmanThrottle body, 46mm $225+ Core
6. Five-o-motorsport,Fuel Injector: Bosch XF2E, 22.2 lb OE Upgrade 247.80
7. Summit, MSD Blaster HVC Ignition Coil $125.95
8. Andy's AutoSport, MSD Ignition Tachometer/Fuel Adapter $46.16
9. Andy's AutoSport MSD Ignition Spark Plug Wire Set - Street Fire - 8 Mm Silicone/SyntheticJacket Resists Heat $33.03
10. Speedway Motors,MSD 6AL Ignition Control with Rev Limiter $227.00
11. Oreilly Auto Parts, MCS MurrayTemperature Control - 180* Thermostat $8.00
12. Summit, Autolite CopperCore Spark Plugs 3923$9.00
13. Summit,Mopar Performance Valves, Intake 2.02 $131.70
14. Summit, Mopar Performance Valves, Exhaust 1.62 $161.70
15. Head milling Somewhat Free
16. Summit,Gibson Headers $409.95
17. Lincoln Mark8 Fan, LocalJunkyard About $50.00
18. Custom Intake Manifold ???
19. Edelbrock 10 Inch air cleaner Free
20. Summit, GMB High PerformanceWater Pumps $109.95
TOTAL $2810.14
1. Summit, Differential, No-Slip Traction System, 29-Spline, Mopar8.25 $488.95
2. HughesEngine Hydraulic RollerV6 Camshaft $200.00+ Core
3. Summit, Rocker Arms, Pedestal Mount, 1.7 Ratio, Aluminum, FullRoller $265.95
4. Summit, Flowmaster 10, Single in/dualout $69.99
5. FastmanThrottle body, 46mm $225+ Core
6. Five-o-motorsport,Fuel Injector: Bosch XF2E, 22.2 lb OE Upgrade 247.80
7. Summit, MSD Blaster HVC Ignition Coil $125.95
8. Andy's AutoSport, MSD Ignition Tachometer/Fuel Adapter $46.16
9. Andy's AutoSport MSD Ignition Spark Plug Wire Set - Street Fire - 8 Mm Silicone/SyntheticJacket Resists Heat $33.03
10. Speedway Motors,MSD 6AL Ignition Control with Rev Limiter $227.00
11. Oreilly Auto Parts, MCS MurrayTemperature Control - 180* Thermostat $8.00
12. Summit, Autolite CopperCore Spark Plugs 3923$9.00
13. Summit,Mopar Performance Valves, Intake 2.02 $131.70
14. Summit, Mopar Performance Valves, Exhaust 1.62 $161.70
15. Head milling Somewhat Free
16. Summit,Gibson Headers $409.95
17. Lincoln Mark8 Fan, LocalJunkyard About $50.00
18. Custom Intake Manifold ???
19. Edelbrock 10 Inch air cleaner Free
20. Summit, GMB High PerformanceWater Pumps $109.95
TOTAL $2810.14
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Joined: Dec 2010
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From: MA
Hey '01,
I'm going to give you my honest opinion on this. I've done "builds" when I was younger and learned a lot from my mistakes. The first thing to realize is: NOTHING beats displacement. The second thing, you have to balance what you do. You can't force more fuel/air into an engine if it can't get out.
#1 won't help your horsepower. If you are having problems keeping the rear hooked up, then go for it. Really, you're better off watching the throttle - something like you are your own "traction controller."
On the engine, the heads are your limiting factor. Those valves you've spec'd only show the intake valves about .1" bigger and the exhausts are the same as stock. There is no practical difference.
Most of the ignition benefits aren't worth it. IF your current ignition system is in good shape there won't be a significant (if any) improvement. A custom flash for your PCM would do as much.
You already have a roller cam. I'm not sure which cam you're looking at but with the high rocker arm ratio you're going to be putting a lot more stress on the valve train, that means timing chains, pushrods, the lifters too.
Try using a 5.2 throttle body, out of the boneyard. The problem you have to watch is you don't want oversize it either or you can get "bog."
Try an underdrive setup for your water pump and alternator. That can help some. If you look at the part number you'll see it's the same pump for a 3.9, 5.2, and 5.9. The stock water pump is MORE than adequate to cool your engine.
What do you have in your differential now, what ratio? If you have a 3.55 try a 3.92. It'll help performance.
Good luck.
I'm going to give you my honest opinion on this. I've done "builds" when I was younger and learned a lot from my mistakes. The first thing to realize is: NOTHING beats displacement. The second thing, you have to balance what you do. You can't force more fuel/air into an engine if it can't get out.
#1 won't help your horsepower. If you are having problems keeping the rear hooked up, then go for it. Really, you're better off watching the throttle - something like you are your own "traction controller."
On the engine, the heads are your limiting factor. Those valves you've spec'd only show the intake valves about .1" bigger and the exhausts are the same as stock. There is no practical difference.
Most of the ignition benefits aren't worth it. IF your current ignition system is in good shape there won't be a significant (if any) improvement. A custom flash for your PCM would do as much.
You already have a roller cam. I'm not sure which cam you're looking at but with the high rocker arm ratio you're going to be putting a lot more stress on the valve train, that means timing chains, pushrods, the lifters too.
Try using a 5.2 throttle body, out of the boneyard. The problem you have to watch is you don't want oversize it either or you can get "bog."
Try an underdrive setup for your water pump and alternator. That can help some. If you look at the part number you'll see it's the same pump for a 3.9, 5.2, and 5.9. The stock water pump is MORE than adequate to cool your engine.
What do you have in your differential now, what ratio? If you have a 3.55 try a 3.92. It'll help performance.
Good luck.
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I didn't do any research on the valves so I didn't know that was stock. I want the water pump because I may have to replace my radiator and water pump this summer and might as well upgrade. What would be good for valves?
Last edited by 01dak3.9; Mar 22, 2013 at 09:02 PM.
Section Moderator
Joined: Dec 2010
Posts: 4,858
Likes: 47
From: MA
The problem is, you can't just put bigger valves in. The seats have to match.
A suggestion, do ONE thing at a time and see what happens. Change the throttle body and see if you notice any performance gains.
Just pulling the fan should give you a performance boost.
A suggestion, do ONE thing at a time and see what happens. Change the throttle body and see if you notice any performance gains.
Just pulling the fan should give you a performance boost.
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Legend
Joined: Feb 2005
Posts: 8,058
Likes: 183
From: Fort Worth, TX
A 5.9 R/T went 8.30, not sure what he had for mods.