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04-29-2006, 02:47 PM
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#1 |
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Registered User
Join Date: Apr 2006
Location: Missoula, Montana
Posts: 3
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305 Question.
Hello. I have a '68 GMC C20 Custom Camper with a '78-'79 305 2-bolt V-8 with a Rochester 4-barrel Quadrajet. This is my first truck and I'd like to make it into a daily driver. Should I look for a 350 or keep the 305? Thanks.
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04-29-2006, 02:52 PM
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#2 |
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Registered User
Join Date: Dec 2003
Location: here
Posts: 5,789
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Re: 305 Question.
Nothing really wrong with a 305. Just a little short on HP. Ive had a few & they are a little known for eating timing chains & cam lobes. If it were mine, Id pull the cam & install a new 350 cam in it & also toss a new chain & gears on while its apart. The 305 will thank you for it & the power gain will put a smile on your face...
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04-29-2006, 02:59 PM
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#3 |
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DON'T TREAD ON ME
 
Join Date: May 2005
Location: Crosby County, TX
Posts: 989
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Re: 305 Question.
Like cornfed said, they are short on power but otherwise just as good as any other SBC. I have an '86 GMC with a 305. I use it for a work truck. It's old and weak but keeps on chugging. All the money goes to my baby in the sig.
 If you're happy with your 305's performance I'd keep on drivin'.
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Old Yeller |
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04-29-2006, 04:10 PM
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#4 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: 305 Question.
It all depends on if the power is enough for you or not. The 305 is only a turd to lead footed maniacs like myself. In all reality, it is just as good as any other small block. (there's a few exceptions to that rule though)
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04-29-2006, 05:00 PM
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#5 |
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Registered User
Join Date: Jul 2005
Location: Kernersville, NC
Posts: 599
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Re: 305 Question.
i'd say keep, i've got one for a '86 camaro one picece reamain seal, has to been rebuilt with a comp high engery 268h cam and some headwork and it'll run. no prob out of it so far, just sucks gas. chris.
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its a work in progess. 71 c-10 lwb, in the middle of frame off restoration. 69 c-10 swb, drag truck, 406 sbc, balanced, comp 292 cam, ported, polished, gasket matched, and bowl blended pro comp 210cc heads, 2.02/1.60 ferrea valves,1.6 roller rockers, re curved hei with msd 6al box, 2-step rev limter, accel 300+ wires, ported victor jr intake, holley 750 double pumper carb, dynomax 1 5/8 headers, 4 spd munci m-20 with super case and iron midplate, mr. gasket vertigate shifter, 5.38 pro gears with full spool, 33 spline moser axles and c-clip elimators, line-loc, 5 gal fuel cell, holley blue pump.   7.807 @ 88.37mph 1.60 60FT 80 g-20 van, tow rig, cammed 305, th350, 10 bolt 88 jeep wrangler, dd, 258, ax-15 swap, 4.5" lift, 33x12.50's, lockers, 3.55's |
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04-29-2006, 10:24 PM
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#6 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: 305 Question.
If it runs good, keep it. If it doesn't run good, or at all for the most part, dump it and find something else, IMO.
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04-30-2006, 12:29 AM
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#7 |
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Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
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Re: 305 Question.
As long as it runs, use it. Keep your eye out for a good deal on a 350, and as soon as the 305 needs a major (expensive) repair, junk it and go with the 350. That's what I would do.
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"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal.  We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
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04-30-2006, 02:42 PM
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#8 |
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Registered User
Join Date: Apr 2006
Location: Missoula, Montana
Posts: 3
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Re: 305 Question.
Thanks for the help guys. Is there a specific year range of 350's I should look for?
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04-30-2006, 07:43 PM
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#9 |
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Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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Re: 305 Question.
Member of the 305 club here. I've got one from a 84 Camaro in "Old 70."
Can't complain.
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85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days!  05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal! 
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05-01-2006, 10:39 AM
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#10 |
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Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: 305 Question.
Putting a freshly rebuit 305 roller cammed engine from a 89 Camaro in the 1970 truck soon. Hope to pass a few gas stations now.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 Last edited by Green Machine; 05-01-2006 at 10:40 AM. |
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05-01-2006, 01:03 PM
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#11 |
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Semi-Senior Member
Join Date: Feb 2003
Location: Washington, MO
Posts: 390
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Re: 305 Question.
Add me to your 305 members list. Same vintage in ole yellar, been going semi-strong for 6 years with the 200,000 plus miles on the engine. Stock 305 2bbl from a 77 Nova. With 3.08 gears and turbo 350 trans, gets better fuel mileage than anything in my fleet.
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'68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab |
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05-01-2006, 01:19 PM
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#12 | |
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Senior Member
Join Date: Nov 2005
Location: Portland Oregon
Posts: 287
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Re: 305 Question.
Quote:
I have a 79 305 setting on an engine stand in my garage and I have been doing a little research on the motor. With the right set of heads, intake and cam you can realy bring these to life. The question you have to ask yourself is it worth the money to put a different top end on this motor? I kind of like the fact that they are on the gutless side being that I am going to put this motor in my sons 63 shortwide and it will be his first driver. What kind of gas milage are you getting with yours? I have a granny 4speed and a 10 bolt 3.08/1 differential in it. Hoping for my sons sake it gets some decent gas milage. I think before I put it in the truck I am going to replace the stock intake and put a Edlebrock Intake and a Carter AFB on top to let it breath a little better. Good luck with your truck. JRB Last edited by JRB; 05-01-2006 at 01:21 PM. |
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05-01-2006, 02:55 PM
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#13 |
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Registered User
Join Date: Feb 2000
Location: Georgetown, KY, USA
Posts: 631
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Re: 305 Question.
While I havn't drove it for 5 or 6 yrs, I put a '86 - 305 in my '69 and ran it for several years. I got 13 MPG out of it with a T-400 and 3.73 gears. It felt peppy for the first 1/4 of the gas pedal then flat. Get it wound up and it moved out fine, not like a 350 but not bad. So it should be a lower HP motor for your son. It should get a little better gas milage then mine with the 3.08 rear gear. Over all I was happy with it.
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