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Re: How can I build 454 for low RPM Power/Torque?
I'm 'fraid you're gonna need a diesel to tow 7000lb. + the weight of your truck happily at 1600 RPM in O.D.. I run about 1500 rpm @ 70 mph with 3.07 rear and a .67 O.D. - TKO 500 transmission. I have a VERY mild 454+ .40 ... low compression, peanut port heads, performer RPM intake, headers, X pipe and a 4/7 swap torque cam. It's in a 2wd '72 Blazer. It burbles along happily at 70 but I don't think it would tow anything and not bog down. It will accelerate smoothly and not buck.. 2000 rpm is a little over 80mph.
I have a daily driver GMC crewcab 6.0, 3.73, 4L80E. Pulling a 24' Haulmark car trailer.. around 7000lb... it constantly shifts out of O.D. on flat ground and it's a PITA... If I take it out of O.D. it's REVVIN' and thirsty with the 3.73's. My buddy has the same truck as mine with a DURAMAX, tows a heaver 26' trailer, and gets much better mileage. I know the 6.0 is only around 364ci, but it's supposed to be tuned for torque in a truck.
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Dad always said, "Son, WISH IN ONE HAND, and ......."
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Current toy trucks:
'71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C
'72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt
Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these:
'66 Plymouth Belvedere City of Miami cop car clone.
'70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!!
'67 C10 short/step side mount spare -- SOLD!!
'72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!!
'69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!!
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