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
jcisworthy View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/23/2009
Location: North Carolina
Status: Offline
Points: 2805
Post Options Post Options   Thanks (3) Thanks(3)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Topic: 304 on the dyno
    Posted: Jan/11/2019 at 1:46pm
304 build on the dyno. 

3.800 bore, 3.44 stroke, 312 CID, 9.72 compression, ported iron heads with 1.84/1.5 valves, LS 1.7 ratio mini shaft rockers, Molnar rods, Racetec pistons, 5cc flat top two valve reliefs, .040 quench with 3.810 bore, .040 thick Cometic MLS gaskets, air gap intake, factory appearing deep oil pan, Doug's 1 7/8 headers, Quick fuel brawler 600 CFM mechanical secondary carb, billet MSD type ignition

Best pull, 381.8 TQ @ 3600, 363.3 HP @ 5500





Specializing in dyno services, engine building, and cylinder head porting

rbjracing.com
Phone Number 518-915-3203
Back to Top
jcisworthy View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/23/2009
Location: North Carolina
Status: Offline
Points: 2805
Post Options Post Options   Thanks (1) Thanks(1)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 1:49pm
More pictures, 


Specializing in dyno services, engine building, and cylinder head porting

rbjracing.com
Phone Number 518-915-3203
Back to Top
1982AMCConcord View Drop Down
AMC Addicted
AMC Addicted


Joined: Jul/13/2012
Location: Kenosha, WI
Status: Offline
Points: 1286
Post Options Post Options   Thanks (0) Thanks(0)   Quote 1982AMCConcord Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 1:51pm
Wow! Now that is more than respectable!!!!!!!!!!! Good work!!!!!!!!!!!!!!!!!!!!!! This 304 would be a lot of fun!!!!!!!!!!!!! 
Back to Top
jcisworthy View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/23/2009
Location: North Carolina
Status: Offline
Points: 2805
Post Options Post Options   Thanks (1) Thanks(1)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 2:01pm
Specializing in dyno services, engine building, and cylinder head porting

rbjracing.com
Phone Number 518-915-3203
Back to Top
JolleyGreenSST View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Jul/12/2018
Location: High Desert, CA
Status: Offline
Points: 239
Post Options Post Options   Thanks (0) Thanks(0)   Quote JolleyGreenSST Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 2:14pm
Great job! My only questions are for such a low rpm range why the need for Molnar rods? And why again did the dyno run end at 5500rpm? 
"God is good all the time and all the time God is good!"
Back to Top
shootist View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: May/24/2012
Location: Triad, NC
Status: Offline
Points: 1023
Post Options Post Options   Thanks (0) Thanks(0)   Quote shootist Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 2:20pm
Now that is pretty impressive numbers for a little ole 304 AMC motor. 
Back to Top
jcisworthy View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/23/2009
Location: North Carolina
Status: Offline
Points: 2805
Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 2:23pm
Originally posted by JolleyGreenSST JolleyGreenSST wrote:

Great job! My only questions are for such a low rpm range why the need for Molnar rods? And why again did the dyno run end at 5500rpm? 

I use Molnar rods in everything. For a little extra money it does not make sense not to. 

It was starting to nose over so that is where he pulled it to. 

It will pull strong to 6K no problem
Specializing in dyno services, engine building, and cylinder head porting

rbjracing.com
Phone Number 518-915-3203
Back to Top
EVF_Sportabout View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Oct/04/2018
Location: Colorado
Status: Offline
Points: 199
Post Options Post Options   Thanks (3) Thanks(3)   Quote EVF_Sportabout Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 4:35pm
What I can't get over is how high and flat that torque curve is it hits 350 @ about 2900 and just stays up there all the way through.  We had one pull where it hit 381.8 @ 3600 RPM.  Its going to be a fun driving Sportabout yes its going in a wagon!
Back to Top
jpnjim View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Nov/25/2007
Location: New England
Status: Offline
Points: 2752
Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 5:54pm
Sweet parts combination!
 That Air Gap was born to sit on a set of ported 304 heads like that,

 it sounds amazing on the dyno and ought to RIP in a Hornet Wagon!

Nicely done John Clap



edit,
couple questions,
did you leave the intake divider intact on this build?
did you happen try a pull with an open carb spacer?

That 600 Double pumper is probably the perfect match for this engine,
 just curious if it left any power on the table at the very top (especially if the full divider is intact).





Edited by jpnjim - Jan/11/2019 at 6:10pm
71 P-code 4spd Javelin/AMX
some Jeeps and some Fords
Back to Top
Buzzman72 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/15/2009
Location: Southern IN
Status: Offline
Points: 2713
Post Options Post Options   Thanks (1) Thanks(1)   Quote Buzzman72 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2019 at 6:26pm
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.
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

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.105 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