what's wrong with 305's - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68GMCCustom · 07-09-2010, 09:13 PM

now thats funny.

dbaillargeon · 07-12-2010, 10:55 PM

I have a 305 V-6 in my c30 1 ton, it was out of a 1966. I changed the carb to a new 2 barrell Holley. She is a champ pretty much, bullet proof....

Warrens69GMC · 07-14-2010, 11:01 AM

I have picked up FREE 305's from craigslist. Rebuilding a 305 can count less than a 350 if you wait (or source) the parts before you need them. If you were to rebuild a 305, the best option is to get a 88-up roller cam block with a 1piece rear main seal.

Use a piston like this:
http://cgi.ebay.com/ebaymotors/SET-8...Q5fAccessories

cam like this:
http://cgi.ebay.com/ebaymotors/350-5...item3a5cd176e8

and run chevy heads (416) or 305 vortecs with a dual plane manifold.

*Ticker* · 07-14-2010, 11:30 AM

45 (or more) too few CID. Same price to build, lesss power - seldom what folks are looking for.

Not a bad little engine, but not one to spend any money on.

I can only speak for myself.

red69ss · 07-14-2010, 04:39 PM

good motors if its a driver or work truck no problem ,but in my opinion not good for resale, bought the 68 I had with one in it
(smoking and using oil) and it was the first thing to go . I couldn't give that motor away had to scrap it. they will de-value a classic, in my opinion the same car or truck with a 350 will always bring more.

GASoline71 · 07-14-2010, 05:05 PM

As a stocker... fine.

Modified... garbage.

You won't find any 305's under the hood of anything I own.

Gary

Hubscrub · 07-14-2010, 10:08 PM

bring the all to me i will take them

68GMCCustom · 07-15-2010, 12:06 AM

I gave my last 305 away when the 383 went in. Compression was so low you could hand spin it with the plugs in....so yes you could have had mine!

57larry · 07-15-2010, 08:37 PM

go old school-build a 283

panhandler62 · 07-15-2010, 08:52 PM

You can build the ding-dong out of a 305 but it will cost a bit more than it will to get similar results from a 350.

http://www.chevyhiperformance.com/te..._ii/index.html

I had a 95 short-fleet with a vortec 305 and, though it was no Corvette, it was not disappointing in the least.

72timemachine · 07-16-2010, 12:33 AM

If I am not mistaken the 305 cannot be bored much larger than what they did at the factory so guys who want some get up and go use a 350. In 1985 my friend had one of the first IROC z28s and that car scared the crap out of me, then after he let me out he would burn posi marks a good 75 to 100 feet. Nothing wrong with the 305.

07-09-2010, 09:13 PM	#26
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: what's wrong with 305's now thats funny. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken Last edited by 68GMCCustom; 07-09-2010 at 09:13 PM.

07-12-2010, 10:55 PM	#27
dbaillargeon Registered User Join Date: May 2010 Location: massena NY Posts: 33	Re: what's wrong with 305's I have a 305 V-6 in my c30 1 ton, it was out of a 1966. I changed the carb to a new 2 barrell Holley. She is a champ pretty much, bullet proof.... __________________ A lot to think about, not much to worry about...

07-14-2010, 11:01 AM	#28
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,612	Re: what's wrong with 305's I have picked up FREE 305's from craigslist. Rebuilding a 305 can count less than a 350 if you wait (or source) the parts before you need them. If you were to rebuild a 305, the best option is to get a 88-up roller cam block with a 1piece rear main seal. Use a piston like this: http://cgi.ebay.com/ebaymotors/SET-8...Q5fAccessories cam like this: http://cgi.ebay.com/ebaymotors/350-5...item3a5cd176e8 and run chevy heads (416) or 305 vortecs with a dual plane manifold.

07-14-2010, 11:30 AM	#29
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Re: what's wrong with 305's 45 (or more) too few CID. Same price to build, lesss power - seldom what folks are looking for. Not a bad little engine, but not one to spend any money on. I can only speak for myself.

07-14-2010, 04:39 PM	#30
red69ss Burnouts are therapeutic Join Date: Jun 2007 Location: lancaster, south carolina Posts: 852	Re: what's wrong with 305's good motors if its a driver or work truck no problem ,but in my opinion not good for resale, bought the 68 I had with one in it (smoking and using oil) and it was the first thing to go . I couldn't give that motor away had to scrap it. they will de-value a classic, in my opinion the same car or truck with a 350 will always bring more. __________________ 1969 CHEVELLE SS 1972 C10 ALMOST DAILY DRIVER 1968 C10 RUSTBUCKET (MISSION IMPOSSIBLE) 1972 PONTIAC LEMANS CONVERTIBLE (WIFE'S CAR) "My wife and I were happy for twenty years. Then we met." - Rodney Dangerfield "The difference between genius and stupidity is that genius has its limits." - Einstein

07-14-2010, 10:08 PM	#32
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: what's wrong with 305's bring the all to me i will take them __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

07-15-2010, 12:06 AM	#33
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: what's wrong with 305's I gave my last 305 away when the 383 went in. Compression was so low you could hand spin it with the plugs in....so yes you could have had mine! __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

07-15-2010, 08:37 PM	#34
57larry Registered User Join Date: Nov 2007 Location: Indianapolis Posts: 1,161	Re: what's wrong with 305's go old school-build a 283

07-15-2010, 08:52 PM	#35
panhandler62 Java Mechanic Join Date: Jun 2005 Location: Martinsburg, WV Posts: 6,764	Re: what's wrong with 305's You can build the ding-dong out of a 305 but it will cost a bit more than it will to get similar results from a 350. http://www.chevyhiperformance.com/te..._ii/index.html I had a 95 short-fleet with a vortec 305 and, though it was no Corvette, it was not disappointing in the least. __________________ Keith 11 Lincoln MKT -- Momma's wagon 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 ....

07-16-2010, 12:33 AM	#36
72timemachine Registered User Join Date: Oct 2008 Location: los angeles ca Posts: 220	Re: what's wrong with 305's If I am not mistaken the 305 cannot be bored much larger than what they did at the factory so guys who want some get up and go use a 350. In 1985 my friend had one of the first IROC z28s and that car scared the crap out of me, then after he let me out he would burn posi marks a good 75 to 100 feet. Nothing wrong with the 305.



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