More power...

fifesjeep

I guess if you had more torque in that 304 you would've ran a better time than 15 seconds... (Also depending on the set-up of the car etc... ie: suspension, weight to hp etc). This stroker kit will simply put the torque in the bottom end helping to launch the projectile down the strip... The great thing about it is that with this combination (stroker kit).. you'll have that 10:1 compression ratio, you'll have the bottom end torque and you'll still be able to hit the high rpms... Do the complete roller set-up and you'll be butter!!!

fifesjeep wrote
I woudn't even bother with the 291c heads.... In my opinion they're over rated... especially compared to the newer larger cc heads... with a little work on these newer and larger cc heads they'll perform better than the 291 heads hands down

82Waggy

fifesjeep wrote
That isn't right man!!!! That's wrong by all means... But you did forget to mention the awesome MPG you'll still get!!!!

And they are supercharging the crap out of the Eco's now too!

Mate it to a modern 5 speed and Atlas Tcase - now that would be cool.

OR, how about extending the hood line of the flat fender and dropping in a Viper V-10 - The Deusenburg of Jeeps!!

And you thought you were the only sick one :sa:

82Waggy

I just remembered another thing to consider when stroking std 304-360's blocks. They have thin webs and may not hold up to stroking very well. In the Trans Am racing days, AMC's were blowing up all over the place until they went to the heavier webbed service block - then they could not be beaten.

FuzzFace2

Fifesjeep I hear you on the 291 heads over after market heads. Would love to get a set of Indy sr‚Äôs heck why not the full race cnc‚Äôs and intake! What stopped me was money, isn‚Äôt it always and time! Had 2 weeks to get motor together before a race and all I had where stock parts to work with other than the cam kit and that had to work with out any machine work. So the 291‚Äôs where used to bump compression up from stock 8.25 (74 Jeep 360) to maybe 9.5, would be nice if it was 10:1. As for the car every thing was the same: Th400, 4000 stall, 4.56 locker, 9x28x15 slicks, 3110# with driver, pull one motor change over intake/carb, dist. and drop back in. I think that if you‚Äôre going to put time & money into a motor might as well start with some thing a little bigger like the 360 and stroke it :? Dave ----

fifesjeep

Agreed with starting bigger but for those who want to build a small 304 and have it stomp the competition (Chevy/fords/etc).. I'm all for it. Plus I'd love to see a 304 hit 350 to 400hp

76-cj7

Now this is the kind of talk I like to hear...The whole purpose of me starting htis thread was to get differnt people's opinions and it sure has worked!! Thats one thing i love about Bulltear is the quick and intellegent responses! Over at pirate4x4.com i always got mixed answers and they have the hardcore (which has very little if any hardcore chat) i kept getting mixed answers that made no sense, then when i went to the newbie section i got barely anything out of it. Then i found Bulltear and finally figured out that there is more than just me out there who loves AMC!!!! Like i said guys, keep up the great work!

Holeshot

Why not use a 401 block with the 3.25" stroke? (358 cu. in.)

I do believe that this is the combo that Shirley Shahan, Wally Booth, & others were using for ProStock, but they didn't have the heads we have now.

milnersXcoupe

the smaller bore is perfect for Turbo charging or Supercharging,
forget trying to make HP / Torque with crazy comp. ratios / strokes / RPM.

join this group & lurk:

http://autos.groups.yahoo.com/group/jyturbo/

run a single Turbo - you can go 'Blow-Thru' with a carb

http://groups.yahoo.com/group/BLOWTHRU/

or
get 'jiggy' & get an ECM from a Pontiac Sunbird Turbo # 1227749
about $40.00 > www.car-parts.com

the jyturbo group has a few AMC 304 Turbo installs in their Archives.

Turbos:

www.mjmturbos.com

you can run 6lbs.Boost on cast pistons > I'd install some forged so you can twist the Boost Controller.

400HP is easy with a Turbo > and > you can back off the Boost & tool around town on 8.5 compression all day > mild mannered grocery getter until you spin the Controller...........
:t: :sa: :razz: :!: :-|

Holeshot

That first URL is coming up as invalid syntax, www.jyturbo@yahoogroups.com,
looks like a mailto addy.

I agree 100% about the smaller bores for forced induction, the smaller bore blocks have much more material to keep the bores round under boost of up to 30 psi!!! The 390/401s are pretty thin even before boring +.030" (as far as distortion letting the burning charge get past the rings & burn a piston @ high boost pressure goes).

1,000 HP is not an unreasonable target.

gschuld

I apologize ahead of time for my discouraging thoughts. As far as displacement goes...I take the easy way out personally... 390/401s. Costs the same to rebuild generally, and starting with an extra 100 cubes is a real help. It will likely be worth more when finished(especially a 390/401) The cost of aquiring even a 401 core will surely be cheaper than a stroker crank for the 304. Basically, in the end you will likely find it to be much simpler, less expensive, more durable, and more streetable to get 400hp+(naturally aspirated) from an AMC the larger the engine is to start with(and used 360's are practically free). About the only thing that changes that situation in my mind is when serious forced induction is involved. If done carefully, I hear a turbo setup for an AMC can be done quite cheaply if you don't mind doing a bit of researching and scrounging. I am all for the turbo 304 package. They are very cool! They can handle serious boost, especially with good forged pistons! I'm a CJ guy myself and I'm sure glad that you aren't leaning toward a chevy swap. If you are serious about a 304 build, I have 3 old 304's residing in the "storage department". Let me know if you need something. George

Holeshot

Who needs a stroker crank when a 390/401 crank can be used in a 290/304 block!!!

Lifted79CJ7

http://autos.groups.yahoo.com/group/jyturbo/

dbesade

Holeshot wrote
Who needs a stroker crank when a 390/401 crank can be used in a 290/304 block!!!

Hear Hear :lo1l:

milnersXcoupe

I've a 1978 360 with 33K miles on it for a Turbo project - thinking of a 304 for stronger cylinderwalls - to use 360 heads on a 304 block - what type of notching am I looking at ? When I find a 401 crankshaft - I'l run Scat H-beams & custom Forged / Perfect Circle gapless ring pak. Are the main webs on an early 70s' 304 any stronger than the later engines ? :-|

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