Re: small block stroker longevity
[Re: AndyF]
#2886850
02/11/21 06:03 PM
02/11/21 06:03 PM
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Joined: Feb 2005
Posts: 20,172 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,172
PA.
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My old van had a 318 in it and I built a very nice 360 for it 35 years or so ago and towed my race car with it. I built a very nice 440 for my Dads motorhome and even ported the heads for it too. Man it ran great.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: small block stroker longevity
[Re: mgoblue9798]
#2886854
02/11/21 06:20 PM
02/11/21 06:20 PM
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Joined: Jan 2003
Posts: 9,996 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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I would be tempted to look for a 5.9 magnum out of a truck, preferably one that would have been subjected to heavy loads, similar to your mh + towing. Rebuild it, transfer the whole system including fuel injection, alternater, ac, the works. I bought a core 5.9 with 200m on it and other than a lot of dirt it was in great shape! VERY little bore wear, only .0015 at the top o f the bores. The right doner vehicle will have everything you need and would have been built to handle the load.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: small block stroker longevity
[Re: mgoblue9798]
#2886963
02/11/21 10:50 PM
02/11/21 10:50 PM
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Joined: Jan 2003
Posts: 11,711 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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If it were a class C I would do just that. It is a 27ft travco that weighs over 10k and will be pulling another 5 behind it. Some have also suggested a cummins but I have no interest listening to it rattle for hours on end. Frankly, why worry about it. As was pointed out, same rod ratio as a 454. I doubt you are going to put 200,000 miles on the thing. If it down the road needs new rings and bearings, or even new pistons from side loading/ scuffing so what. You will have what you want until that day possibly down the road if it ever comes up. If it does, freshen up and move on again
Last edited by B3422W5; 02/11/21 10:51 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: small block stroker longevity
[Re: B3422W5]
#2886978
02/11/21 11:30 PM
02/11/21 11:30 PM
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Joined: Mar 2010
Posts: 1,061 Atlanta, GA
mgoblue9798
OP
super stock
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OP
super stock
Joined: Mar 2010
Posts: 1,061
Atlanta, GA
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If it were a class C I would do just that. It is a 27ft travco that weighs over 10k and will be pulling another 5 behind it. Some have also suggested a cummins but I have no interest listening to it rattle for hours on end. Frankly, why worry about it. As was pointed out, same rod ratio as a 454. I doubt you are going to put 200,000 miles on the thing. If it down the road needs new rings and bearings, or even new pistons from side loading/ scuffing so what. You will have what you want until that day possibly down the road if it ever comes up. If it does, freshen up and move on again Because I only want to do this once. It is a pain in the [censored] getting a motor in and out of one of these. I am not a spring chicken and have a bad back that isn't getting better with age.
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Re: small block stroker longevity
[Re: mgoblue9798]
#2887021
02/12/21 01:38 AM
02/12/21 01:38 AM
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Joined: Nov 2015
Posts: 876 Missouri
jwb123
super stock
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super stock
Joined: Nov 2015
Posts: 876
Missouri
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The only difference with a stock 318 or 360 as for as longevity compared to a stroker kit engine, would be the rod stroke ratio. All the rod stroke ratios used in the stroker kits I have used are well within the range of other stock type engines. If you buy a good quality stroker kit you will have much better components than a stock engine, I would say it would last longer. H-beams rods, forged crank and pistons, I think that is an upgrade from your stock 318. I think the main trouble in finding testimonials for 100,000 mile LA stroker engines, is normally the type of vehicles they are built for, are driven in nice weather on weekends. So it is going to take a lot of time before they rack up that kind of mileage. I would think the main reason for problems will be a better cooling system to get rid of the extra heat that the extra HP the engine will create. Especially in a RV application, where engines can run hot, heavy loads, in the summer, lugging up hills, etc.
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Re: small block stroker longevity
[Re: mgoblue9798]
#2887034
02/12/21 02:57 AM
02/12/21 02:57 AM
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Joined: Aug 2003
Posts: 43,157 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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Is it a class A or class B or C? How long and how heavy? What will it weigh going down the road and will you tow with it? I think the last year Dodge put 318-3 motors in motorhome chassis was 1970, is yours one of those? I know several SO CA drag racers that had mid 1970s class B and C motorhomes with both 440 and 360 in them and they both like the 360 motors better
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: small block stroker longevity
[Re: 340Cuda]
#2887224
02/12/21 02:30 PM
02/12/21 02:30 PM
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Joined: Mar 2010
Posts: 1,061 Atlanta, GA
mgoblue9798
OP
super stock
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OP
super stock
Joined: Mar 2010
Posts: 1,061
Atlanta, GA
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Valve job is just a patch. Like you said, it can make things worse. I have done them and the car run fine for quite some time, but like you I had one that ran like chit after used more oil and was misfiring after. I guess it all depends on if there is enough left in the rings to handle it or not.
As far as the ex valves go, temps can be brought way down with a quench chamber, cam timing, and headers. My motor will get at least good stainless valves. I know the old 413-3 engines had sodium filled exhaust valves, but was not aware of any other mopar engines that did. I have considered using those heads on an RV 440 block.
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Re: small block stroker longevity
[Re: mgoblue9798]
#2887381
02/12/21 07:21 PM
02/12/21 07:21 PM
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Joined: Aug 2005
Posts: 6,003 Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
Joined: Aug 2005
Posts: 6,003
Salem
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That Dodge Motorhome posted in here is nice, does anyone know what the model or year is?
To answer the OP:
Turbocharger.
Mo' Farts
Moderated by "tbagger".
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Re: small block stroker longevity
[Re: mgoblue9798]
#2887400
02/12/21 08:11 PM
02/12/21 08:11 PM
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Joined: Aug 2003
Posts: 43,157 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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Mopar made 318-3 and i believe 360-3 H.D. truck and industrial motors later for trucks and probably class A motor home chassis also. Which motor is in yours? I had a I.H. 24 ft. class A chassis Ute liner 13,500 Lb. GVW chassis (it looked like a early Winnie Class A) that had a I.H. 392 C.I. light duty truck motor in it that was converted to propane only. It flat sucked on power on propane so I switched it back to gasoline and ended up putting a 2 speed truck rear end it that had 6.17 low gear and 4.55 in direct. The original rear end had 4.89 in it and that rear swap was a good thing to do. Put it in low in town and use it as needed on the highways and climbing hills That motor home weighed right at 11,500 full of fuel (120 gallons) and 100 gallons of fresh water with nothing in the grey or black water tanks, it like to cruise between 55 to close to 63 MPH due to the big over hang from the bed above the driver seat and listening to the motor beside you humming along. If I pushed up to over 65 MPH it didn't like that at all. My wide would drive it between 55 and 58 MPH and get around 8.5 MPG, I would drive it between 60 and 63 MPH and get 5.5 MPG
Last edited by Cab_Burge; 02/13/21 02:33 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: small block stroker longevity
[Re: mgoblue9798]
#2887409
02/12/21 08:23 PM
02/12/21 08:23 PM
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Joined: Aug 2005
Posts: 6,003 Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
Joined: Aug 2005
Posts: 6,003
Salem
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Not sure what RV you are talking about. Got a link? 3rd post down in this thread. I had the idea to use a draw-through turbo setup from a 301 pontiac on one of my beater 318's. Pretty simple setup and they come up on Craigslist from time to time for around $250.00. Something to think about anyway, you'd easily out-do a stroker across the whole torque range.
Mo' Farts
Moderated by "tbagger".
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Re: small block stroker longevity
[Re: Grizzly]
#2887469
02/12/21 11:24 PM
02/12/21 11:24 PM
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Joined: Mar 2010
Posts: 1,061 Atlanta, GA
mgoblue9798
OP
super stock
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OP
super stock
Joined: Mar 2010
Posts: 1,061
Atlanta, GA
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I think that is a Travco L'Espirit. rv
Last edited by mgoblue9798; 02/12/21 11:27 PM.
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Re: small block stroker longevity
[Re: mgoblue9798]
#2887494
02/13/21 12:34 AM
02/13/21 12:34 AM
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Joined: Aug 2019
Posts: 9,454 Super Spudsville
Mr PotatoHead
Half Baked
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Half Baked
Joined: Aug 2019
Posts: 9,454
Super Spudsville
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Id consider a 360 core block due to the fact stoker piston offerings for the 318 are slim these days and costly. Also im not sure id use a 2618 alloy which some of the current 318 stroker pistons are, in a high mile build, Ive one with icon 2618 forged at .005 cold and it rattles cold, rattles hot, ect.
360 stroker pistons/rings can be had for about 1/2 of the 318s cost.
Id shoot for 20 more inches and reduced cost.
Good luck.
STOP POTATO HATE!
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