TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > AMC V8 Engine Repair and Modifications
  New Posts New Posts RSS Feed - 304 on the dyno
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

304 on the dyno

 Post Reply Post Reply Page  123 7>
Author
Message Reverse Sort Order
CHAR View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Feb/22/2019
Location: NW Florida
Status: Offline
Points: 149
Post Options Post Options   Thanks (0) Thanks(0)   Quote CHAR Quote  Post ReplyReply Direct Link To This Post Topic: 304 on the dyno
    Posted: Sep/10/2019 at 4:34pm
Could you guess if those headers would fit in a 2nd gen Javelin?  I have a set of 1 5/8's that are going to flow into a new set of 2 1/2" pipes.  Those on the dyno look much bigger.

Thx.
72 Javelin SST P code 360/auto/AC/rear defrost /Go Pack/Polar White w blue cord interior.
Back to Top
Buzzman72 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/15/2009
Location: Southern IN
Status: Offline
Points: 1752
Post Options Post Options   Thanks (0) Thanks(0)   Quote Buzzman72 Quote  Post ReplyReply Direct Link To This Post Posted: Sep/10/2019 at 5:47am
Originally posted by Sonic Silver Sonic Silver wrote:

Originally posted by BMOgremlin BMOgremlin wrote:

In a earlier post it has the cam card from bullet. Are the specs on the card configured using 1.6 or 1.7 rocker ratio?
The cam card posted says .3091 lobe lift and .525 gross. That would make it 1.7 rockers at .525.
 
LS rockers have a LOW ratio of 1.7:1.
Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
Back to Top
billd View Drop Down
Moderator Group
Moderator Group
Avatar
Forum Administrator

Joined: Jun/27/2007
Location: Iowa
Status: Offline
Points: 29918
Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Sep/09/2019 at 10:07pm
It's easy to make power with big cubes - but making power with a smaller engine is more of a challenge and more fun in some ways. 
The Jeep people get all worked up when someone goes into their forum and says they are going to spend a grand on a head, do this, do that - they get blasted by folks saying "why when you can drop a V8 into it cheaper".
So? Making more power with a 6 is something few do so it gets attention when you see these high HP, high torque smaller engines. You know some thinking went into it. More thinking than the average 401 out there. You can buy parts from a checklist and get power - do what everyone else is doing. 
Heck, that little engine is in the territory of my 360! 
Impressive for sure. Well over a HP per cube, with a 304.
That's just plain cool. 

Back to Top
EVF_Sportabout View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Oct/04/2018
Location: Colorado
Status: Offline
Points: 167
Post Options Post Options   Thanks (1) Thanks(1)   Quote EVF_Sportabout Quote  Post ReplyReply Direct Link To This Post Posted: Sep/09/2019 at 9:51pm
This build was not about maximum power it was about enough power to be fun to drive for me.  But John and I held ourselves back throughout the build because the car is my wife's.  So no wild quirks, no street drive ability issues it had to start easily and drive easily or she would not touch the car.  It has close to 1000 miles on it now and it is all those things.  It has been in the mid ninteys and it does not over heat or vapor lock.  The car handles stop and go traffic and cruising situations without giving the driver any of the hot rod drive ability issues.

The car can far more than keep up with traffic and has plenty of passing power in any situation.  Is it the fastest thing out there no.  Is it easy and fun to drive HECK YEAH!  Its already hitting 17 miles to the gallon as well.

Its going to drive to Kenosha next summer! Fun! not Hi Po problems. SmileTongueEmbarrassed 

Not every engine has to be a beast...
1974 Hornet Sportabout
Back to Top
Sonic Silver View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Nov/23/2011
Location: East Tennessee
Status: Online
Points: 4928
Post Options Post Options   Thanks (0) Thanks(0)   Quote Sonic Silver Quote  Post ReplyReply Direct Link To This Post Posted: Sep/08/2019 at 5:00pm
Originally posted by BMOgremlin BMOgremlin wrote:

In a earlier post it has the cam card from bullet. Are the specs on the card configured using 1.6 or 1.7 rocker ratio?
The cam card posted says .3091 lobe lift and .525 gross. That would make it 1.7 rockers at .525.
Back to Top
BMOgremlin View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Sep/01/2019
Location: Deer Park washi
Status: Offline
Points: 208
Post Options Post Options   Thanks (0) Thanks(0)   Quote BMOgremlin Quote  Post ReplyReply Direct Link To This Post Posted: Sep/08/2019 at 4:31pm
In a earlier post it has the cam card from bullet. Are the specs on the card configured using 1.6 or 1.7 rocker ratio?
Back to Top
BMOgremlin View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Sep/01/2019
Location: Deer Park washi
Status: Offline
Points: 208
Post Options Post Options   Thanks (1) Thanks(1)   Quote BMOgremlin Quote  Post ReplyReply Direct Link To This Post Posted: Sep/07/2019 at 9:56pm
I personally don't care if an amc car has a 400hp 304 or a stock 401. Our devotion to the brand is what matters to me. So as long its its amc when the hood pops up I'm in!
Back to Top
232jav3sp View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jan/09/2013
Location: Texas
Status: Offline
Points: 2072
Post Options Post Options   Thanks (0) Thanks(0)   Quote 232jav3sp Quote  Post ReplyReply Direct Link To This Post Posted: Sep/07/2019 at 9:45pm
Considering the most expensive parts were the custom pistons (compared to off the shelf Wisecos for 360ci) everything else that was done to this 304 is what gets done to a "serious" 360. You're just not going to get the horsepower because it's a smaller air pump with smaller valves. When you get down to brass tacks, that's about it.


Yes, you could make the same power for less with a 360 (stock enternals), but, if a 360 isn't available to you (like here in East Texas) a 304 has now been proven to be a viable option. After all, most seem to want a snappy, driveable, 400hp; that seems to be the most common 360 question asked, and this particular 304 is darn close to meeting the needs of many out there. Heck, put those pistons and rods in one, with a wider lsa cam, on heads with less work then this 304, and throw some spray at it. That's my take on my it, anyway.

Oh, and before someone comments on my not finding of a 360 in E. Tex, I've only searched Craigslist and have found very little AMCs in the area. I'm sure they are out there. I just don't know where to look.
Back to Top
LakesideRamblin View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Dec/21/2015
Location: So. California
Status: Offline
Points: 2021
Post Options Post Options   Thanks (1) Thanks(1)   Quote LakesideRamblin Quote  Post ReplyReply Direct Link To This Post Posted: Sep/07/2019 at 7:55pm
To each his own regarding our great AMC engines.  I think it is super cool what he did with HIS 304.  Bad@$$.  I hopped up my 360 in my 69 Rambler and I used old log style exhaust manifolds as I did not want to fool with headers given engine bay space limitations and other fiddling.  I love the way it runs and really don't care if others have a different opinion about it.

Rock on with that 304, John! 😎


Edited by LakesideRamblin - Sep/07/2019 at 7:57pm
LakesideRamblin
69 Rambler 220 360
73 Javelin 360
"If you could kick the person in the pants responsible for most of your trouble, you wouldn't sit for a month." T. Roosevelt
Back to Top
Buzzman72 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/15/2009
Location: Southern IN
Status: Offline
Points: 1752
Post Options Post Options   Thanks (0) Thanks(0)   Quote Buzzman72 Quote  Post ReplyReply Direct Link To This Post Posted: Sep/07/2019 at 7:40pm
Originally posted by JolleyGreenSST JolleyGreenSST wrote:

Originally posted by Buzzman72 Buzzman72 wrote:

After seeing these numbers, can we all stop telling newbies with a 304 to use it for a boat anchor and get a 360 instead?

Some of us love seeing what can be done with small cubic inch naturally aspirated engines.

After re-reading this topic (it is worth going over again) as much as I love the results and the proof that the 304 is not a boat anchor... the difference between the 304/360 and other small blocks like the Ford 302/351, is that the bore is so small that the better flowing large valve heads will not fit like on the Ford. But other makes have the same concern like the Chevy 305 and Chrysler 318 are considered worrhless for serious power because of the small bores and restricted head choice... all of these engines are good and capable of making decent street power, it's  just when you try to make anything over 1-hp per cube that it gets pricier then building an equivalent 360/351/350. So for a performance build I would go with the extra cubes as a no brainer choice, same or less money and more power is a winning combination. The point is this AMC 304 wasn't a budget build. You can probably get the same power out of a 360 for quite a bit less. Under 300hp keep the 304, over that and get a 360 if you don't want to spend a small fortune. Imho.

Oh.

So it's all about the bore.

So you're saying it's not a boat anchor, but really it is in your eyes.

Gotcha.




Edited by Buzzman72 - Sep/07/2019 at 7:44pm
Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
Back to Top
 Post Reply Post Reply Page  123 7>
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.094 seconds.
All content of this site Copyright © 2018 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or