How can I get more Horsepower? - JeepForum.com

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post #1 of 22 Old 04-17-2012, 06:23 AM Thread Starter
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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post #2 of 22 Old 04-17-2012, 06:29 AM
rodgers3
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Difernt gear ratio, bigger tires
Holly carb?
Someone more experienced will tell u whats up
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post #3 of 22 Old 04-17-2012, 06:33 AM
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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post #4 of 22 Old 04-17-2012, 06:35 AM
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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post #5 of 22 Old 04-17-2012, 06:38 AM
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T5

1985 CJ7 - total customization underway, Sublime green and Plum crazy purple, Ford 9", 258 w/ Holley 475
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post #6 of 22 Old 04-17-2012, 06:39 AM
RobsCrawlin7
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and the tires and gears?

'01 TJ 4.7/NV3550, 2" lift, 35's, locked.
'79 CJ7 stock, 304
'98 XJ sold
'79 CJ7 sold
'82 CJ7 parted
'89 MJ sold

SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
1 April 2007
Rest In Peace Brothers
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post #7 of 22 Old 04-17-2012, 06:47 AM
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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post #8 of 22 Old 04-17-2012, 07:09 AM
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.

'01 TJ 4.7/NV3550, 2" lift, 35's, locked.
'79 CJ7 stock, 304
'98 XJ sold
'79 CJ7 sold
'82 CJ7 parted
'89 MJ sold

SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
1 April 2007
Rest In Peace Brothers
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post #9 of 22 Old 04-17-2012, 07:30 AM
hutch1200
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Is it in tune even?

I've also learned that sometimes... when people don't agree with you .... its best to hold them down and kidney punch them till they agree with you
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post #10 of 22 Old 04-17-2012, 08:14 AM
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.

Live in a way that those who know you but don't know God will come to know God because they know you.
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post #11 of 22 Old 04-17-2012, 08:20 AM
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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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post #12 of 22 Old 04-17-2012, 08:27 AM
scottymac62
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I would start by releasing your emergency brake.

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post #13 of 22 Old 04-17-2012, 08:40 AM
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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post #14 of 22 Old 04-17-2012, 09:02 AM
gmakra
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Hey Shawn is that two flux capacitors to the right of your engine?
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post #15 of 22 Old 04-17-2012, 09:04 AM
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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