L.W.(Bill) Hughes III

Hi Carl,
I believe the Dana 20 is stronger, it's the transfer Kaiser chose
to put in their 350" buick powered Gladiator trucks, and 67-79 Scout,
Bronco V8s, 72-79 CJ. And it's of course the one I use behind a four
hundred small block, and Muncie Corvette M21:
http://www.----------.com/pismo.htm
God Bless America, Bill O|||||||O
mailto:--------------------

Carl wrote:
>
> Thanks, Billy. So the 76 will have the D20 transfer case? How much better is
> the D300 over the D20?
>
> Carl

L.W.(Bill) Hughes III

Hi Carl,
I believe the Dana 20 is stronger, it's the transfer Kaiser chose
to put in their 350" buick powered Gladiator trucks, and 67-79 Scout,
Bronco V8s, 72-79 CJ. And it's of course the one I use behind a four
hundred small block, and Muncie Corvette M21:
http://www.----------.com/pismo.htm
God Bless America, Bill O|||||||O
mailto:--------------------

Carl wrote:
>
> Thanks, Billy. So the 76 will have the D20 transfer case? How much better is
> the D300 over the D20?
>
> Carl

L.W.(Bill) Hughes III

Hi Carl,
I believe the Dana 20 is stronger, it's the transfer Kaiser chose
to put in their 350" buick powered Gladiator trucks, and 67-79 Scout,
Bronco V8s, 72-79 CJ. And it's of course the one I use behind a four
hundred small block, and Muncie Corvette M21:
http://www.----------.com/pismo.htm
God Bless America, Bill O|||||||O
mailto:--------------------

Carl wrote:
>
> Thanks, Billy. So the 76 will have the D20 transfer case? How much better is
> the D300 over the D20?
>
> Carl

Carl

Thanks, Bill. Any other information?

Carl


"L.W.(Bill) ------ III" <----------@***.net> wrote in message
news:44B6BC91.A044E01C@***.net...
> Hi Carl,
> I believe the Dana 20 is stronger, it's the transfer Kaiser chose
> to put in their 350" buick powered Gladiator trucks, and 67-79 Scout,
> Bronco V8s, 72-79 CJ. And it's of course the one I use behind a four
> hundred small block, and Muncie Corvette M21:
> http://www.----------.com/pismo.htm
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> Carl wrote:
>>
>> Thanks, Billy. So the 76 will have the D20 transfer case? How much better
>> is
>> the D300 over the D20?
>>
>> Carl

Carl

Thanks, Bill. Any other information?

Carl


"L.W.(Bill) ------ III" <----------@***.net> wrote in message
news:44B6BC91.A044E01C@***.net...
> Hi Carl,
> I believe the Dana 20 is stronger, it's the transfer Kaiser chose
> to put in their 350" buick powered Gladiator trucks, and 67-79 Scout,
> Bronco V8s, 72-79 CJ. And it's of course the one I use behind a four
> hundred small block, and Muncie Corvette M21:
> http://www.----------.com/pismo.htm
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> Carl wrote:
>>
>> Thanks, Billy. So the 76 will have the D20 transfer case? How much better
>> is
>> the D300 over the D20?
>>
>> Carl

Carl

Thanks, Bill. Any other information?

Carl


"L.W.(Bill) ------ III" <----------@***.net> wrote in message
news:44B6BC91.A044E01C@***.net...
> Hi Carl,
> I believe the Dana 20 is stronger, it's the transfer Kaiser chose
> to put in their 350" buick powered Gladiator trucks, and 67-79 Scout,
> Bronco V8s, 72-79 CJ. And it's of course the one I use behind a four
> hundred small block, and Muncie Corvette M21:
> http://www.----------.com/pismo.htm
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> Carl wrote:
>>
>> Thanks, Billy. So the 76 will have the D20 transfer case? How much better
>> is
>> the D300 over the D20?
>>
>> Carl

billy ray

I cut and pasted the chart.

The earlier 304s put out 210 hp (similar to all the other mfgrs 300 inch
engines). The new rating system resulted in a change of generally about
20-25%.

Yes the other changes you mention made up the other 20-30 HP.

That same block casting was used for all AMC V-8s so you can safely bore the
block a LONG way.....


"L.W.(Bill) ------ III" <----------@***.net> wrote in message
news:44B6B9A7.8E168EE7@***.net...
> Hi Bill,
> You typed out the compression ratio without looking at it? That and
> the smaller valves, cam and carburetor, are responsible for the
> horsepower loss, not some imaginary new horsepower evaluation!
> http://www.----------.com/amchpchart.jpg Of course, with pop-ups and cam
> it's right back at four hundred horsepower.
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> billy ray wrote:
>>
>> There was nothing wrong with the AMC 304 that wasn't because of the EPA.
>> The 'huge' drop in horsepower was because of the change in the way they
>> measured it. 150 'new' horsepower was about the same as 180-190 'old'
>> horsepower and the engine is capable of substantial upgrades.
>>
>> http://www.jeeptech.com/engine/amc304.html
>>
>> The 304 used from '72-'78 has the best performance of all the 304s used
>> in
>> the CJ. .
>>
>> AMC 304 V8
>> Bore x Stroke 3.75" x 3.44"
>> Displacement 304(4.98L)
>> Compression Ratio 8.4:1
>> Horsepower (net) 150@4200
>> Torque (net) 245@2500
>> Main Bearings 5
>> Valve Configuration OHV
>> Fuel 2bbl
>>
>> CJ model Information:
>> http://www.earlycj5.com/tech/general...ersGuide.shtml
>>
>> Final AMC (Long 83 inch wheel base) 1976 through 1983
>> Identifying features include:
>> a.. Longer hood and front fenders to accommodate the AMC I-6 engines
>> b.. Engine(s) AMC 232 CID or 258 CID I-6, AMC 304 V-8
>> c.. New stronger, wider frame with longer springs for softer ride
>> d.. Fuel tank and fuel-fill located in rear of the tub
>> e.. Wide windshield frame with built-in door hinges fold-down *****
>> with
>> wipers mounted on bottom and motor mounted on the inside
>> f.. New floorboard and changed seating bracket design
>> g.. Saginaw steering box (power steering optional)
>> h.. Dana Model 20, after 1979, Dana Model 300 transfer case
>> i.. Dana Model 30 front axle
>> j.. AMC Model 20 2 piece rear axle identified by it's "WWI Round
>> Helmet"
>> style differential cover
>> k.. Three speed transmission T-150, T-18 Four speed transmission
>> optional
>> l.. Laredo and Renegade models had the tailgate deleted, spare tire
>> mounted on rear, models with a tailgate had a swing away tire carrier
>> m.. Levi and Golden Eagle trim levels available
>> n.. Silver Anniversary edition released for 79 only

billy ray

I cut and pasted the chart.

The earlier 304s put out 210 hp (similar to all the other mfgrs 300 inch
engines). The new rating system resulted in a change of generally about
20-25%.

Yes the other changes you mention made up the other 20-30 HP.

That same block casting was used for all AMC V-8s so you can safely bore the
block a LONG way.....


"L.W.(Bill) ------ III" <----------@***.net> wrote in message
news:44B6B9A7.8E168EE7@***.net...
> Hi Bill,
> You typed out the compression ratio without looking at it? That and
> the smaller valves, cam and carburetor, are responsible for the
> horsepower loss, not some imaginary new horsepower evaluation!
> http://www.----------.com/amchpchart.jpg Of course, with pop-ups and cam
> it's right back at four hundred horsepower.
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> billy ray wrote:
>>
>> There was nothing wrong with the AMC 304 that wasn't because of the EPA.
>> The 'huge' drop in horsepower was because of the change in the way they
>> measured it. 150 'new' horsepower was about the same as 180-190 'old'
>> horsepower and the engine is capable of substantial upgrades.
>>
>> http://www.jeeptech.com/engine/amc304.html
>>
>> The 304 used from '72-'78 has the best performance of all the 304s used
>> in
>> the CJ. .
>>
>> AMC 304 V8
>> Bore x Stroke 3.75" x 3.44"
>> Displacement 304(4.98L)
>> Compression Ratio 8.4:1
>> Horsepower (net) 150@4200
>> Torque (net) 245@2500
>> Main Bearings 5
>> Valve Configuration OHV
>> Fuel 2bbl
>>
>> CJ model Information:
>> http://www.earlycj5.com/tech/general...ersGuide.shtml
>>
>> Final AMC (Long 83 inch wheel base) 1976 through 1983
>> Identifying features include:
>> a.. Longer hood and front fenders to accommodate the AMC I-6 engines
>> b.. Engine(s) AMC 232 CID or 258 CID I-6, AMC 304 V-8
>> c.. New stronger, wider frame with longer springs for softer ride
>> d.. Fuel tank and fuel-fill located in rear of the tub
>> e.. Wide windshield frame with built-in door hinges fold-down *****
>> with
>> wipers mounted on bottom and motor mounted on the inside
>> f.. New floorboard and changed seating bracket design
>> g.. Saginaw steering box (power steering optional)
>> h.. Dana Model 20, after 1979, Dana Model 300 transfer case
>> i.. Dana Model 30 front axle
>> j.. AMC Model 20 2 piece rear axle identified by it's "WWI Round
>> Helmet"
>> style differential cover
>> k.. Three speed transmission T-150, T-18 Four speed transmission
>> optional
>> l.. Laredo and Renegade models had the tailgate deleted, spare tire
>> mounted on rear, models with a tailgate had a swing away tire carrier
>> m.. Levi and Golden Eagle trim levels available
>> n.. Silver Anniversary edition released for 79 only

billy ray

I cut and pasted the chart.

The earlier 304s put out 210 hp (similar to all the other mfgrs 300 inch
engines). The new rating system resulted in a change of generally about
20-25%.

Yes the other changes you mention made up the other 20-30 HP.

That same block casting was used for all AMC V-8s so you can safely bore the
block a LONG way.....


"L.W.(Bill) ------ III" <----------@***.net> wrote in message
news:44B6B9A7.8E168EE7@***.net...
> Hi Bill,
> You typed out the compression ratio without looking at it? That and
> the smaller valves, cam and carburetor, are responsible for the
> horsepower loss, not some imaginary new horsepower evaluation!
> http://www.----------.com/amchpchart.jpg Of course, with pop-ups and cam
> it's right back at four hundred horsepower.
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> billy ray wrote:
>>
>> There was nothing wrong with the AMC 304 that wasn't because of the EPA.
>> The 'huge' drop in horsepower was because of the change in the way they
>> measured it. 150 'new' horsepower was about the same as 180-190 'old'
>> horsepower and the engine is capable of substantial upgrades.
>>
>> http://www.jeeptech.com/engine/amc304.html
>>
>> The 304 used from '72-'78 has the best performance of all the 304s used
>> in
>> the CJ. .
>>
>> AMC 304 V8
>> Bore x Stroke 3.75" x 3.44"
>> Displacement 304(4.98L)
>> Compression Ratio 8.4:1
>> Horsepower (net) 150@4200
>> Torque (net) 245@2500
>> Main Bearings 5
>> Valve Configuration OHV
>> Fuel 2bbl
>>
>> CJ model Information:
>> http://www.earlycj5.com/tech/general...ersGuide.shtml
>>
>> Final AMC (Long 83 inch wheel base) 1976 through 1983
>> Identifying features include:
>> a.. Longer hood and front fenders to accommodate the AMC I-6 engines
>> b.. Engine(s) AMC 232 CID or 258 CID I-6, AMC 304 V-8
>> c.. New stronger, wider frame with longer springs for softer ride
>> d.. Fuel tank and fuel-fill located in rear of the tub
>> e.. Wide windshield frame with built-in door hinges fold-down *****
>> with
>> wipers mounted on bottom and motor mounted on the inside
>> f.. New floorboard and changed seating bracket design
>> g.. Saginaw steering box (power steering optional)
>> h.. Dana Model 20, after 1979, Dana Model 300 transfer case
>> i.. Dana Model 30 front axle
>> j.. AMC Model 20 2 piece rear axle identified by it's "WWI Round
>> Helmet"
>> style differential cover
>> k.. Three speed transmission T-150, T-18 Four speed transmission
>> optional
>> l.. Laredo and Renegade models had the tailgate deleted, spare tire
>> mounted on rear, models with a tailgate had a swing away tire carrier
>> m.. Levi and Golden Eagle trim levels available
>> n.. Silver Anniversary edition released for 79 only

L.W.(Bill) Hughes III

Hi Bill,
The AMC blocks look the same, but their water jackets must adjust
for different cylinder wall thickness. That's why we may see which it is
by reading the core number under the driver's side mount:
http://www.----------.com/AMCengineblock401.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

billy ray wrote:
>
> I cut and pasted the chart.
>
> The earlier 304s put out 210 hp (similar to all the other mfgrs 300 inch
> engines). The new rating system resulted in a change of generally about
> 20-25%.
>
> Yes the other changes you mention made up the other 20-30 HP.
>
> That same block casting was used for all AMC V-8s so you can safely bore the
> block a LONG way.....