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What would be easier to sell?

Discussion in 'The Lounge' started by JROSS, Feb 16, 2007.

  1. JROSS

    JROSS 1/2 ton status

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    I have an 81 Blazer currently without motor. I have the option of putting an unknown milage running 350 in it, or a rebuilt 307. If you were looking to get a Blazer, which one would have more appeal, (easier to sell)?

    Thanks,

    Jeremy
     
  2. BulldogK5

    BulldogK5 1/2 ton status GMOTM Winner

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    I would guess that the 350 would be easier to unload seperately as well as in the truck. More people know of the 350 than the 307. Like they say, There's no replacement for displacement.
     
  3. diesel4me

    diesel4me 1 ton status Premium Member

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    no contest!..

    350 by a landslide!...a 307 ain't a "bad" motor,but it has a short stroke, and doesn't have much low end torque..better for a light vehicle with low gears in the rear than a heavy truck..a 305 will feel more powerful than a 307 does..

    I regret putting the 307 in my '81 G-10 Van from a '73 Chevelle--that thing is a DOG!..only 115 hp,and 275 ft lbs of torque!..I think the camelhumper 250 six I yanked out went faster!..and the 2.73 rear end gears really bog it down..:doah: I shoulda put the 400 SB I had in my '74 K20 in it instead,but I didn't have the cash to rebuilt it,and the 307 ran great..oh well!..

    :crazy:
     
  4. JROSS

    JROSS 1/2 ton status

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    Thanks, thats what I figured. I'll probably just throw the 350 in it and get it out of my driveway.

    Anyone want a Blazer?:wink1: :rolleyes:
     
  5. 76zimmer

    76zimmer Flyin Rat Premium Member GMOTM Winner

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    I gotta disagree, with engines being stock, and same state of tune, I think the 307 will outperform the 305 due to the better heads, bigger valves, and bigger bore. Not that they were any powerhouse, but I've had both. 71 Chevelle, 307; 77 shortbox 2wd 305. I would rather have the 307 over the 305.

    At any rate give em the 350
     
  6. diesel4me

    diesel4me 1 ton status Premium Member

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    you had a "good" 307!..

    I agree the 350 belongs in a full sized rig...bigger is always better!..:D

    Your '71 Chevelle 307 had a higher compression ratio ,and the "old" heads,not the "lightweight" ones my 73 has..the 68-72 307's had 200 HP and 300 Ft.Lbs of torque,my 73 has far less,and lower compression..was the first "smog" year with an EGR valve..even with it disabled it is a dog!..

    The 305 has the same stroke as a 350,just has a bit smaller bore..the 307 has a 3.25 inch stroke,the 305 and 350 both have a 3.48 inch stroke,and both have more bottom end power than my 307 ever will!..

    I had a 305 from an '86 G10 van in my 79 C10--that thing would spin the tires easily and even chirp the tires when it shifted to second,if you held it wide open..don't know what gears the rear had,probably 3.08 or 3.42's I'd guess..my van has 2.73's,and is slower than molasses with the 307,cant even spin the tires in sand in first gear!..but I guess it is heavier too,has a bed in it, and carpeting all around..

    I've had 2 or 3 307's in other Chevy's ,they ran well, but were not fast off the line--you can wind a 307 up higher than a stock 305 thanks to its shorter stroke,but you'll lose the race at the starting line!.....

    Both the 305's and 307's were plauged with "soft" camshaft lobes,that often went flat with less than 50K on them..that in my opinion is why many have bad things to say about those motors,they probably had one with a flat lobed cam,like all of mine were when I got them!..a cam swap wakes them right up,makes a world of difference,but they'll never be a 350 either..:crazy:
     

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