Re: 408 Stroker experience ??
[Re: 69Cuda340S]
#1281041
08/08/12 01:48 AM
08/08/12 01:48 AM
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Joined: Jan 2003
Posts: 20,826 A collage of whims
topside
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,826
A collage of whims
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Ralf, the 406 we did for my '74 Duster - A/C, 3.21 gear, street car - was pretty basic: iron heads, Eddy Performer, T-quad, 9.5:1 (a bit much on 91 octane), Engle 214/224 @ .050 & .470/.504 lift cam, basic headers. Pulled plenty of vacuum, great throttle response, 17MPG @ 70, more than enough power on the street, sounded healthy but ran smoothly. Stock converter & automatic. I'd do it again in a heartbeat but with 9.0:1 so I could run a bit more advance curve on 91, though where I live now the gas is better and I'm about 2000' higher altitude. With aluminum heads, the 9.5 would likely be OK. Also more overlap would ease the octane sensitivity, but the trade-off is throttle response & vacuum. Your car is probably 200 lbs heavier than my Duster, which tends to magnify the laziness of a big cam @ low RPM. Hope that info helps.
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Re: 408 Stroker experience ??
[Re: RalfCoronet67]
#1281047
08/08/12 10:29 PM
08/08/12 10:29 PM
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Joined: Jan 2008
Posts: 377 Michigan Troll
blk00rt
enthusiast
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enthusiast
Joined: Jan 2008
Posts: 377
Michigan Troll
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I am running a fuel injected magnum 408, specs are mopar cast crank, eagle I beam rods, Keith black 9.8:1 pistons, cam is 218/224 lift ground at 114 cl with 4 degrees of advance ground in and another 4 at the chain. Mopar RT 1.92 heads, Mopar 4bbl intake, Harland Sharp 1.6 Roller rockers, 52x55 mm throttle body, SCT Tuning. been built for 7 years now and can drive it any day I choose as long as it does not rain..if it rains I have to drive it carefully.
Rob Dunn 1976 Dart Sport 360 2000 dakota RT 408 with 150 nitrous 2013 Dodge Ram 1500 Hemi 2009 Jeep Patriot
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Re: 408 Stroker experience ??
[Re: RalfCoronet67]
#1281049
08/09/12 09:37 AM
08/09/12 09:37 AM
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Joined: Feb 2003
Posts: 1,665 Milwaukee, WI
Prince_Valiant
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
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Very Very Very happy I went the stroker route w/ my Lil' Red Express.
I wanted a very strong engine that would behave like a good street engine...something that sounded tough pulling in at the cruises and hang out spots, is more than a match for most vehicles in the stoplight-drags or at the drag strip, and plenty easy to live with without using crazy gears/torque converter. The truck made every goal easily.
Engine: 408ci magnum based stroker. 10.5:1 compression, Eddy AL heads modified w/ 2.08 valves/ported, HYD roller cam (228/236 @ .050, .550/.565, 108 LSA), Eddy performer rpm, Holley avenger 780.
Idles decent (good lope idling in gear), with more than enough vacuum for power brakes, pushes the truck easily w/ 3.55 gears...probably low 13's as it sits in the 1/4, maybe quicker...will light off the tire at any speed under 30mph, yet can take on long cruises, idle in traffic, etc.
I think it would have been harder to pull off the same feat using a standard cube 360 and be as happy with the driving characteristics.
1979 Dodge Lil' Red Express - 360 rwhp, 13.2 @ 103mph 1968 Coronet: 318, 2.76, 15.2 @ 92mph! (SOLD) 1976 Valiant: 360, 3.90, 12.90 @ 106 (SOLD) 1989 Shelby CSX #500/500
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