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Unread 04-17-2012, 05:23 AM   #1
DaDirtyDirty
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How can I get more Horsepower?

Hey gang. I got an 85 CJ7 with a stock Straight 6. Any ideas how I can squeeze more HP out of it?

It kind of tops out at 55 and I need a little more speed on the highway.

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Unread 04-17-2012, 05:29 AM   #2
rodgers3
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Difernt gear ratio, bigger tires
Holly carb?
Someone more experienced will tell u whats up
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Unread 04-17-2012, 05:33 AM   #3
gmakra
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Well it would help if you had your profile filled out since we have no starting point of what you have now. You know tire size gear ratios and such are helpful.

Right now all I can recommend is a flux capacitor.
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Unread 04-17-2012, 05:35 AM   #4
RobsCrawlin7
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Quote:
Originally Posted by gmakra View Post
Right now all I can recommend is a flux capacitor.


but yeah, you need to fill your info out.
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Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
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Unread 04-17-2012, 05:38 AM   #5
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Unread 04-17-2012, 05:39 AM   #6
RobsCrawlin7
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and the tires and gears?
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Quote:
Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
1 April 2007
Rest In Peace Brothers
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Unread 04-17-2012, 05:47 AM   #7
mopar346
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Put a V8 in it.

You know someone was gonna say it. As I understand it the 258 is what it is, a tractor engine, you can do all the little stuff you want and really not yield any real gain. Now I have seen some major work that supposedly yielded good results but they are BIG dollars, better off investing in a more effecient engine with more cubes.
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Unread 04-17-2012, 06:09 AM   #8
RobsCrawlin7
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Quote:
Originally Posted by mopar346 View Post
Put a V8 in it.

You know someone was gonna say it. As I understand it the 258 is what it is, a tractor engine, you can do all the little stuff you want and really not yield any real gain. Now I have seen some major work that supposedly yielded good results but they are BIG dollars, better off investing in a more effecient engine with more cubes.
while this is true, i think your problem is not in the motor, its in your gearing. before you tell us what tires and gears you have, im going to take a stab at 35's and 3.31's or something like that.
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'79 CJ7 PICS HERE specs in profile - SOLD
'01 TJ 4.7/NV3550, 4" lift 33's stroked
'98 Chili Pepper Red XJ Sport, 4.0, AX15, 4x4 3" lift, 31" AT's
'79 CJ7 stock, 304

Quote:
Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
1 April 2007
Rest In Peace Brothers
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Unread 04-17-2012, 06:30 AM   #9
hutch1200
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Is it in tune even?
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Unread 04-17-2012, 07:14 AM   #10
swatson454
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The flux capacitor is a great upgrade but they're expensive

Personally, I'd start with the nutter bypass and recurve the distributor.

If you have some cash to throw at it and your state allows it, a header and good muffler helps out quite a bit over the stock manifold, cat and muffler.



Even more cash, a Weber 38 is a really nice upgrade.
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Unread 04-17-2012, 07:20 AM   #11
Ripper3494
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Quote:
Originally Posted by swatson454
The flux capacitor is a great upgrade but they're expensive

Personally, I'd start with the nutter bypass and recurve the distributor.

If you have some cash to throw at it and your state allows it, a header and good muffler helps out quite a bit over the stock manifold, cat and muffler.

Even more cash, a Weber 38 is a really nice upgrade.
X2 on the flux capacitor mod, I did that and now im pushin low 400s
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Unread 04-17-2012, 07:27 AM   #12
scottymac62
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I would start by releasing your emergency brake.
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Unread 04-17-2012, 07:40 AM   #13
bentring
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Quote:
Originally Posted by TheRyans33 View Post
while this is true, i think your problem is not in the motor, its in your gearing. before you tell us what tires and gears you have, im going to take a stab at 35's and 3.31's or something like that.
Wouldn't it be the other way with him wanting more top end?
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Unread 04-17-2012, 08:02 AM   #14
gmakra
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Hey Shawn is that two flux capacitors to the right of your engine?
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Unread 04-17-2012, 08:04 AM   #15
swatson454
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Quote:
Originally Posted by gmakra View Post
Hey Shawn is that two flux capacitors to the right of your engine?
Good eye!

They're the earlier version, though, before NASA started using platinum-wound transducers in the hyperdrive unit.


Shawn
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