Can this be duplicated with a 5.9 build??
Ima thinking, something like;
a fairly flat torque curve beginning at say 3400
about a 3000TC
an A518 (727-based) overdrive with lock-up,
and whatever gears it takes to NOT hunt up/down at cruising speed.
Say you built a 360 that can tow that 10,000lb rig at 70=2800, with a reasonably throttle-opening, and no hunting, and say you have 30" tires. In .69od that would take a 5.13 rear gear. Your starting-off gear would be 2.45 x 5.13=12.57 which, normalized to 27lnches would be 11.31
With the 2800 TC she might be a lil lazy off the line, but a little ways out, she'll be boogieing. And in direct, she might be hitting 4400@70 with 10% slippage, That is boogie territory.
Per the graph below;
Passing, in direct
at 55mph will get you. ..~3500/290hp/420tq, at the fat part of the curve. By 60mph.. the Rs are up to 3800/300hp/414tq
By 70mph ............. ..... 4400/327hp/390tq
Interesting stuff.
----------------------
I built a 360LA engine like this with a Hughes 223/[email protected]/110LSA cam, Edelbrock alloy heads, KB 167s, and 11.3/1 Scr. By it's Trapspeed , this made 335 hp, shifting at 7000, waaay past the power-peak.
But it made more than enough torque to cruise in double overdrive (A833od-GVod) at 65mph= 1600, even sucking thru a 750DP. Mind you, my Barracuda was only 3900 pounds with the two of us, and our gear, in it.
With a final drive ratio of 1.97 and 27" tires, this maths to 100=2460rpm. We mighta cruised there for a few hours, following an early 2000s Corvette. Can't say for sure but I think the Vette mightabin doing 120 for a part of that time, lol. Whatever, I kept him in my sights.
I ran this engine on E87 full time with 32/34* Power Timing, delayed to all-in by 3400. For fuel-economy, it liked up to 60* advance at 100kph=62mph.
Your results may vary.
There are two KEYs to this combo.
First is the Alloy heads that allow a very high CCP(Cranking Cylinder Pressure),without detonation. And
Second is a rock-solid running temperature, that allows a decent tune to stay where you put it. I have no idea how some guys tune an engine to run with an ever-changing cooling system temperature of 20 to 30 degrees. Mine, best I can tell, has no more than a 2* variance once warmed up.
Some FABO members have stated that they run OVER 200 psi CCP in their stroked 360s, allbeit on best gas. For a short time I ran there as well, but on 87E10 with no detectable detonation. At the end of the season when I freshened the engine, she was just fine. But I made some changes that winter and by spring, she was running 185psi. She still made so much torque/power that I never bothered with trying to optimize the PowerTiming.
I cannot tell you if this combo would have made a good engine for your 10,000 pound rig, on account of I have never towed anything with it. But I always thought it made a pretty good tractor-type engine in my 3650pound (me only in it) Barracuda. I ran it for about three years with the A833od manual trans in it. By 2003/2004, I had bolted a GVod behind that, to split gears with. A year or two later, I had a Commando A833/GVod in it and a bigger cam,lol. I really loved thar 223 cam and was very sad when it started to drop lobes.
@sireland67 mentions a Comp 262 cam, Which I like and agree with. But trying to keep the pressure down below say 185 ( for 87E10) might be tough. The 360 with; the 63cc Edelbrocks, a FelPro .039 gasket, and KB107s, falls together at about 10.7Scr, without touching the decks. The Comp 262 is likely to get you about 182psi@900ft elevation, so it'll be nip and tuck. But the worst that can happen is that you will have to run 89 gas, lol.
Happy HotRodding.
Ima thinking, something like;
a fairly flat torque curve beginning at say 3400
about a 3000TC
an A518 (727-based) overdrive with lock-up,
and whatever gears it takes to NOT hunt up/down at cruising speed.
Say you built a 360 that can tow that 10,000lb rig at 70=2800, with a reasonably throttle-opening, and no hunting, and say you have 30" tires. In .69od that would take a 5.13 rear gear. Your starting-off gear would be 2.45 x 5.13=12.57 which, normalized to 27lnches would be 11.31
With the 2800 TC she might be a lil lazy off the line, but a little ways out, she'll be boogieing. And in direct, she might be hitting 4400@70 with 10% slippage, That is boogie territory.
Per the graph below;
Passing, in direct
at 55mph will get you. ..~3500/290hp/420tq, at the fat part of the curve. By 60mph.. the Rs are up to 3800/300hp/414tq
By 70mph ............. ..... 4400/327hp/390tq
Interesting stuff.
----------------------
I built a 360LA engine like this with a Hughes 223/[email protected]/110LSA cam, Edelbrock alloy heads, KB 167s, and 11.3/1 Scr. By it's Trapspeed , this made 335 hp, shifting at 7000, waaay past the power-peak.
But it made more than enough torque to cruise in double overdrive (A833od-GVod) at 65mph= 1600, even sucking thru a 750DP. Mind you, my Barracuda was only 3900 pounds with the two of us, and our gear, in it.
With a final drive ratio of 1.97 and 27" tires, this maths to 100=2460rpm. We mighta cruised there for a few hours, following an early 2000s Corvette. Can't say for sure but I think the Vette mightabin doing 120 for a part of that time, lol. Whatever, I kept him in my sights.
I ran this engine on E87 full time with 32/34* Power Timing, delayed to all-in by 3400. For fuel-economy, it liked up to 60* advance at 100kph=62mph.
Your results may vary.
There are two KEYs to this combo.
First is the Alloy heads that allow a very high CCP(Cranking Cylinder Pressure),without detonation. And
Second is a rock-solid running temperature, that allows a decent tune to stay where you put it. I have no idea how some guys tune an engine to run with an ever-changing cooling system temperature of 20 to 30 degrees. Mine, best I can tell, has no more than a 2* variance once warmed up.
Some FABO members have stated that they run OVER 200 psi CCP in their stroked 360s, allbeit on best gas. For a short time I ran there as well, but on 87E10 with no detectable detonation. At the end of the season when I freshened the engine, she was just fine. But I made some changes that winter and by spring, she was running 185psi. She still made so much torque/power that I never bothered with trying to optimize the PowerTiming.
I cannot tell you if this combo would have made a good engine for your 10,000 pound rig, on account of I have never towed anything with it. But I always thought it made a pretty good tractor-type engine in my 3650pound (me only in it) Barracuda. I ran it for about three years with the A833od manual trans in it. By 2003/2004, I had bolted a GVod behind that, to split gears with. A year or two later, I had a Commando A833/GVod in it and a bigger cam,lol. I really loved thar 223 cam and was very sad when it started to drop lobes.
@sireland67 mentions a Comp 262 cam, Which I like and agree with. But trying to keep the pressure down below say 185 ( for 87E10) might be tough. The 360 with; the 63cc Edelbrocks, a FelPro .039 gasket, and KB107s, falls together at about 10.7Scr, without touching the decks. The Comp 262 is likely to get you about 182psi@900ft elevation, so it'll be nip and tuck. But the worst that can happen is that you will have to run 89 gas, lol.
Happy HotRodding.
