Help! 454 in a 78 cj 7? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > Help! 454 in a 78 cj 7?

Savvy/Currie Aluminum Control ArmsRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits ZONE 4.25" combo lift for TJ available at Rockridge4w

Reply
Unread 12-18-2001, 09:35 AM   #1
AGENT ORANGE
Registered User
 
Join Date: Dec 2001
Location: Pocatello, ID
Posts: 4
Help! 454 in a 78 cj 7?

I have a 454 and I was wondering if anyone knows what I need to do to put a 454 in a jeep? I don't need a conversion kit because I have a sm 465 manual trans.

__________________
78 CJ-7, Agent Orange, 350, sm465, 205, dana60 frt dana 14 bolt rr in process 4.10s, full roll cage, custom spring over, 36x15.5x15. with more in the works.
AGENT ORANGE is offline   Reply With Quote Quick reply to this message
Unread 12-18-2001, 04:22 PM   #2
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
Do you really need that kind of power potential? I mean really... you've got a 350 in it already, which if built right should take you to over 400 HP without too much trouble. The 454 is just that much more weight in the front end to push around.
I'd say sell the 454 and buy some other goodies for the 350.
horatio102 is offline   Reply With Quote Quick reply to this message
Unread 12-18-2001, 08:27 PM   #3
swack
Registered User
 
Join Date: Nov 2001
Location: kersey PA
Posts: 25
It should drop right in the mounts are the
same as sbc! As for weight its not that much
more maybe 150# Im puting a 454 in my yj
the projects on hold till i get headers
(back order) there from SS HEADERS
block hugger shorty if you need to order

swack 88yj ITS A BIGBLOCK THING!!!!!!!!!!!!!
swack is offline   Reply With Quote Quick reply to this message
Unread 12-18-2001, 09:50 PM   #4
Darko
Registered User
 
Join Date: Nov 2001
Location: Michigan
Posts: 258
yea, I would keep the 350. All that weight at the front end, will actually decrease your off road performace, but greatly increase you mud performance. Just my $.02 good luck
__________________
Found a 85 CJ7 tub in good shape with
minimal rust. The resto continues....
Darko is offline   Reply With Quote Quick reply to this message
Unread 12-20-2001, 12:41 PM   #5
MuddyCJ5
Registered User
 
Join Date: Nov 2001
Location: Ky,Oh
Posts: 40
The difference in weight between a small block and a big block is very small. If you already have a 350 in it, the BB should almost be a bolt-in, other than the exhuast and maybe an odd wire or hose. I don't think the extra weight would be much of a liabilty. If your BB is built properly and set up right you'll be leading the big dogs down the road! When it comes to engines, BIGGER is BETTER!
MuddyCJ5 is offline   Reply With Quote Quick reply to this message
Unread 12-20-2001, 05:54 PM   #6
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
I can understand that if you're building a Jeep to compete in mud bogging events, but for all around driving? There is such a thing as too much. A mildly built 350 will out-power a stock 454 any day. The only reason on a street legal rig to put something that big in it is if you are towing a heavy load or hauling a heavy load, neither of which is a Jeep's strong suit.
horatio102 is offline   Reply With Quote Quick reply to this message
Unread 12-20-2001, 08:08 PM   #7
swack
Registered User
 
Join Date: Nov 2001
Location: kersey PA
Posts: 25
2001 Subaru Impreza RS
1986 Dodge Power Ram W250
^^^^^^^^^^^^^^^^^^^^^^^^^
thats all i need to know!

swack 88yj ITS NOT WHAT YOU BUY ITS WHAT YOU BUILD!! SORRY
swack is offline   Reply With Quote Quick reply to this message
Unread 12-21-2001, 01:49 AM   #8
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
Quote:
Originally posted by swack:
2001 Subaru Impreza RS
1986 Dodge Power Ram W250
^^^^^^^^^^^^^^^^^^^^^^^^^
thats all i need to know!

swack 88yj ITS NOT WHAT YOU BUY ITS WHAT YOU BUILD!! SORRY

Your point?
horatio102 is offline   Reply With Quote Quick reply to this message
Unread 12-27-2001, 02:11 AM   #9
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
That's what I thought.
horatio102 is offline   Reply With Quote Quick reply to this message
Unread 12-27-2001, 07:41 PM   #10
swack
Registered User
 
Join Date: Nov 2001
Location: kersey PA
Posts: 25
"A mildly built 350 will out-power a stock 454 any day"
I DONT THINK SO!!! BETER GO BACK TO YOUR BOOKS!!!!

THATS WHAT I KNOW!!!!!!!!!!!
SWACK 88YJ
swack is offline   Reply With Quote Quick reply to this message
Unread 12-28-2001, 12:57 AM   #11
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
Stock 454: (1997 GMC 3/4 ton pickup) 290hp, 410 ft-lbs
Mildly built 350: (Edlebrock Performer RPM 9.5:1 crate engine) 410hp, 408 ft-lbs.

So, 120 horses more, two pounds less. And that is what I call a "mildly built" motor, as opposed to a heavily built drag-only motor.


And when you tell somebody that they "beter" go back to their books, maybe you ought to run the ol' spell checker.
horatio102 is offline   Reply With Quote Quick reply to this message
Unread 12-28-2001, 09:05 AM   #12
dartboy
Registered User
 
Join Date: Mar 2001
Location: NB Canada
Posts: 111
Horatio, your comparing apples to oranges. Put up some stats on a stock 350 to go with those stock 454 stats you have.

Don't try to talk someone out of doing what they want to there Jeep. If he wants a 454 just give him any help you have to offer, not this negative crap your saying. Does your Subaru have a 454...no. So can you offer this man any reallife help., not book facts.

Really not trying to piss anybody off here but if you have never had a 454 in a Jeep before don't be offering negative feedback on that topic.

Peace, and Happy Holidays.
__________________
Jason
90 YJ...Stock for now.
74 Dodge Dart Sport
dartboy is offline   Reply With Quote Quick reply to this message
Unread 12-28-2001, 10:33 AM   #13
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
Don't give me any crap. If you guys read what I posted, you would know that I was offering some decent advice. Do I have a 454 in my Subaru? No. I don't need it. It would be a total waste of time and energy. The little 2.5l 4-banger is enough, with some simple bolt ons, for mid-14 second quarter miles. If I were to swap a motor into my Subaru it would be a SMALLER motor, a 2.0l four banger. Why? Because they're good for over 300 horsepower. There are Imprezas doing sub-12 second quarter mile times with the 2 liter.
Now, as far as comparing apples to oranges, DUH! That was the point. Why don't you scroll up and see where I suggested that he sell the 454 and build up the 350 he has. Why don't you read the part where I said that a MILDLY BUILT 350 would out-power a STOCK 454. Now why would I make that suggestion? Because it will cost money to get the 454 put in, or at the very least it will take hours of his time. Plus he loses out on the possible profit from the sale of that 454, which in turn could go towards modifying the already capable 350.
I don't have stats for the weight on a 350 versus a 454, but there is a difference. And when you've got a front-heavy vehicle to begin with, why not try to minimize the difference?

Did you honestly think I was suggesting that he not do it because I just didn't want him to? I was just offering my opinion that it was not really necessary. If you guys can't handle it, well that's too bad.
horatio102 is offline   Reply With Quote Quick reply to this message
Unread 12-28-2001, 01:53 PM   #14
Buzzard
Registered User
 
Join Date: Nov 2001
Location: Maine
Posts: 121
I agree with the opinion that a 454 would be more than I'd want in a Jeep, I'd be real happy with a 350. BUT, there is no way a mildly pumped 350 is equal to a big block. You can't compare a pumped small block crate engine with HP measured at the flywheel vs. a detuned big block truck engine with HP measured at the rear wheel. If both engines have similar intakes, cams and compression ratios, the big block will have at least 60-80 more HP.
Buzzard is offline   Reply With Quote Quick reply to this message
Unread 12-28-2001, 03:41 PM   #15
horatio102
Web Wheeler
 
Join Date: Mar 2001
Location: Alger, WA
Posts: 1,452
Quote:
Originally posted by Buzzard:
If both engines have similar intakes, cams and compression ratios, the big block will have at least 60-80 more HP.
Ok, you guys are missing the point.
Stay with 350 - Have extra money to put into building it up
Go with 454 - Use the extra money for the install, leaving no money left over for modifying it.

I KNOW that a mildly built 454 will whack a mildly built 350, but I'm going on the $$ left over spent to upgrade the existing plant.

I'm not a freaking moron. If money were no issue, the comparison between the two wouldn't have been made. Who knows, maybe money is not an issue, but if that's the case, why not buy a Merlin 509 block with its 540 hp and 2yr/24,000 mile warranty? You could probably strap a blower to that, then add nitrous, and eek out about a thousand hp. That should be enough, but I understand how there is NEVER enough horsepower.



How much horsepower do you really need in a Jeep?
horatio102 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.