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400hp out of a 4.7?

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400hp out of a 4.7?

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Old 09-04-2014, 05:06 PM
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Default 400hp out of a 4.7?

Is it possible to get 400hp, if not then close to that number, out of a 4.7? I have an '04 Jeep GC currently with the 4.0 but I'm considering droping in a 4.7. I've heard it can be done, and I've also heard it can't be done so I'm here to find out. The 4.7 is the only engine I want in there and I don't want N/A. With that said, is the 400hp mark actually possible? If not, then what's the most I can get?
 
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Old 09-04-2014, 05:13 PM
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Anything is possible with the right budget.
 
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Old 09-04-2014, 06:11 PM
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Originally Posted by jkeaton View Post
Anything is possible with the right budget.
What kind of budget are we talking about here?
 
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Old 09-04-2014, 07:05 PM
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1. 4.56 GEARS - depending on your tire height 410's/4.56's. Personally if your tire height is taller then 30" tall I would lean towards 4.56's.
2. ELECTRIC FAN -.
3. 2008 INTAKE MANIFOLD or our SULLIVAN ALUMINUM INTAKE MANIFOLD -
4. 4.7L PERFORMANCE CAMS - H/O's, 206's or 212 Cams
5. SUPERCHIPS FLASHPAQ - Great with up to 70mm throttle body and H/O cams.
6. HEADERS -
7. SINGLE 3" EXHAUST -
8. HIGH FLOW "Y" PIPE & MUFFLER -
9. 70-72MM THROTTLE BODY - F&B. Chose the largest Throttle body you can tune for. (70mm for Superchips & 72mm for SCT custom tune)
10. RACE PORTED HEADS -
11. CUSTOM PROGRAMMER - SCT CUSTOM TUNE (Needed with PORTED HEADS & or 206, 212, 212x, 218 or greater custom cams & or 72mm throttle body)
12. 2800 STALL CONVERTER - This will get you off the line quicker by allowing your engine to rev to approx 2800 before the transmission engages... Under part throttle would would not notice much of a difference at all... but put your foot down and the RPM's will rocket to the desired RPM getting you closer to your RPM power band.

You can google the prices yourself but I would guess $3000-$4000 and that list will probably get you maybe 100hp over stock, still not 400. Maybe with a 50 shot of nos on top of that you might get there.
 
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Old 09-05-2014, 07:58 AM
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Originally Posted by jkeaton View Post
1. 4.56 GEARS - depending on your tire height 410's/4.56's. Personally if your tire height is taller then 30" tall I would lean towards 4.56's.
2. ELECTRIC FAN -.
3. 2008 INTAKE MANIFOLD or our SULLIVAN ALUMINUM INTAKE MANIFOLD -
4. 4.7L PERFORMANCE CAMS - H/O's, 206's or 212 Cams
5. SUPERCHIPS FLASHPAQ - Great with up to 70mm throttle body and H/O cams.
6. HEADERS -
7. SINGLE 3" EXHAUST -
8. HIGH FLOW "Y" PIPE & MUFFLER -
9. 70-72MM THROTTLE BODY - F&B. Chose the largest Throttle body you can tune for. (70mm for Superchips & 72mm for SCT custom tune)
10. RACE PORTED HEADS -
11. CUSTOM PROGRAMMER - SCT CUSTOM TUNE (Needed with PORTED HEADS & or 206, 212, 212x, 218 or greater custom cams & or 72mm throttle body)
12. 2800 STALL CONVERTER - This will get you off the line quicker by allowing your engine to rev to approx 2800 before the transmission engages... Under part throttle would would not notice much of a difference at all... but put your foot down and the RPM's will rocket to the desired RPM getting you closer to your RPM power band.

You can google the prices yourself but I would guess $3000-$4000 and that list will probably get you maybe 100hp over stock, still not 400. Maybe with a 50 shot of nos on top of that you might get there.
I like all those ideas! I would rather stick 4.10's (closet I can find for a Dana 35 is 4.11's) Since this will still be somewhat of a daily driver. Also, what about a meth injection from Snow Performance? Will that benefit me at all? And what about the converter, would that some of the driveability out of it? Thanks for helping me out!
 
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Old 09-05-2014, 07:11 PM
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Originally Posted by jkeaton View Post
1. 4.56 GEARS - depending on your tire height 410's/4.56's. Personally if your tire height is taller then 30" tall I would lean towards 4.56's.
2. ELECTRIC FAN -.
3. 2008 INTAKE MANIFOLD or our SULLIVAN ALUMINUM INTAKE MANIFOLD -
4. 4.7L PERFORMANCE CAMS - H/O's, 206's or 212 Cams
5. SUPERCHIPS FLASHPAQ - Great with up to 70mm throttle body and H/O cams.
6. HEADERS -
7. SINGLE 3" EXHAUST -
8. HIGH FLOW "Y" PIPE & MUFFLER -
9. 70-72MM THROTTLE BODY - F&B. Chose the largest Throttle body you can tune for. (70mm for Superchips & 72mm for SCT custom tune)
10. RACE PORTED HEADS -
11. CUSTOM PROGRAMMER - SCT CUSTOM TUNE (Needed with PORTED HEADS & or 206, 212, 212x, 218 or greater custom cams & or 72mm throttle body)
12. 2800 STALL CONVERTER - This will get you off the line quicker by allowing your engine to rev to approx 2800 before the transmission engages... Under part throttle would would not notice much of a difference at all... but put your foot down and the RPM's will rocket to the desired RPM getting you closer to your RPM power band.

You can google the prices yourself but I would guess $3000-$4000 and that list will probably get you maybe 100hp over stock, still not 400. Maybe with a 50 shot of nos on top of that you might get there.
The Sullivan manifold will not fit on a Grand Cherokee without modifying or replacing the hood which I would prefer not to do. Also, do I need a higher stall converter if I get 4.11's or vice-versa?
 

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