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#1 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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66 305E upgrade HELP!
i need to know whats a real good performance stater, fuel pump,altanator,pistons, camshaft and any other parts i may of missed to put on my 305E engine its a 4 speed.also looking for some good working 66 gmc 351M heads to add on
1966 ![]() Last edited by old_1966_GMC; 08-05-2010 at 01:57 AM. |
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#2 |
Just here to tinker
![]() Join Date: Jun 2008
Location: Holland, MI
Posts: 3,692
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Re: 66 305E upgrade HELP!
unfortunately, there really aren't many other options for getting performance out of your 305. Keep in mind these are truck motors that don't spin very high because of heavy crankshafts and a 60 degree design. The "m" heads, different carbs, exhaust and distributor are about all you can do without having custom made parts or some serious machine work. check out
www.thunderv12.com. they did some crazy things but you'll notice the price reflects that as well. My advice is enjoy it for what it is unless you want to spend big money.
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78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(winter unit)https://67-72chevytrucks.com/vboard/...25#post8900725 |
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#3 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
so will the remans from autozone do any good like the starter,fuel pump,and the altanater these are non performance just reman replacement parts that pricr arent that bad
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#4 |
Just here to tinker
![]() Join Date: Jun 2008
Location: Holland, MI
Posts: 3,692
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Re: 66 305E upgrade HELP!
Sure they are fine to replace but why fix it if it isn't broke? It wouldn't hurt to buy them and have them around though...who knows how much longer the V-6 stuff is going to be available. There is basically no desire for them by most car enthusiasts. Just a few of us crazy guys that gotta be different.
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78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(winter unit)https://67-72chevytrucks.com/vboard/...25#post8900725 |
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#5 |
Registered User
Join Date: Apr 2007
Location: Elk Grove, CA
Posts: 375
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Re: 66 305E upgrade HELP!
I'd love to be fortunate enough to be different like you guys. I think those engines are just plain neat. And I agree with Corts60, those parts would be very expensive to make from scratch, plus the design of the engine just wasn't made for the performance enthusiast. They were all about torque and lasting as long as they could. If you want more out of it you could try to locate one of the 400+ CI model V-6's. Those have loads of torque.
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1964 C10 Shortened Shortbed Cammed LQ9 P&P 1967 C10 Trophy Truck BB 438 (soon to be worked on again) |
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#6 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
i think im just ganna stay withe the 305 after all the info i got from u guys and research i've been doing but tend to wanna swap carbs withe holley 500 but i just cant find a 2bbl intake manifold no where and sense im a register user i cant post nothin on the wtb threads i will be adding some pic of the old 305 i got on 66 gmc when i get home
the stock single carb takes a a min to get it going |
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#7 |
Registered User
Join Date: Apr 2007
Location: Elk Grove, CA
Posts: 375
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Re: 66 305E upgrade HELP!
That's going to be tough to find I bet, but that should open up some more power for you right there if you do find one. Its a shot in the dark but check local scrap yards. I have seen a couple of the V-6's at pick n pull before. I know what you mean, I need to get some funds together and sign up as well!
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1964 C10 Shortened Shortbed Cammed LQ9 P&P 1967 C10 Trophy Truck BB 438 (soon to be worked on again) |
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#8 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
if any knows where i can find one please let know
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#9 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
reasons to grabbing replacement parts was to make this thing look good again and make it run like it did when it first came out the factory
![]() Last edited by old_1966_GMC; 08-06-2010 at 03:19 AM. |
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#10 |
Registered User
![]() Join Date: May 2007
Location: Deale Md
Posts: 4,663
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Re: 66 305E upgrade HELP!
check out the forum on here http://www.6066gmcguy.org/ do search these guys have reground cams, replaced piston,balanced the rotating assembly, made a 4 barrel intake out of a 2 barrel M intake so you can do upgrades.
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James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change! |
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#11 |
1961 crewcab
Join Date: Dec 2007
Location: missoula, mt
Posts: 6,164
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Re: 66 305E upgrade HELP!
I have a blown up 351 for parts on the parts board, take a look and see if it has anything you need...
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60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955 |
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#12 |
Registered Loser
Join Date: Jun 2009
Location: Elyria, OH
Posts: 1,523
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Re: 66 305E upgrade HELP!
If your motor is a 66 you shouldn't need an intake manifold, just the $20 adapter. Does your intake have 3 or 4 carb studs?
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((..)) ((0)) '63 GMC lwb, 383, th350, lays frame, genuine patina. The Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=374267 '88 Astro cargo bagged, shaved, phantom grille. *SOLD* '50 Chevy 2 door sedan awaiting attention. 2014 Silverado Ext cab, 5.3, daily driver. |
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#13 |
Registered Loser
Join Date: Jun 2009
Location: Elyria, OH
Posts: 1,523
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Re: 66 305E upgrade HELP!
If it helps, you can see some pics of my swap on page 2 here;
http://67-72chevytrucks.com/vboard/s...d.php?t=354432
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((..)) ((0)) '63 GMC lwb, 383, th350, lays frame, genuine patina. The Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=374267 '88 Astro cargo bagged, shaved, phantom grille. *SOLD* '50 Chevy 2 door sedan awaiting attention. 2014 Silverado Ext cab, 5.3, daily driver. |
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#14 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
well here are some pic of my 305 i have in the gmc. Thank for the help creep i found out i do have to rigth manifold to do the swap.
Last edited by old_1966_GMC; 08-06-2010 at 02:20 PM. |
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#15 |
Registered User
Join Date: Jan 2010
Location: GREENEVILLE TENNESSEE
Posts: 1,310
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Re: 66 305E upgrade HELP!
check these out and also look in to offenhauser they do have some very odd stuff.
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#16 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
im think of stripping the paint off and go with cast iron on the block and some type of black on some of the parts.Just always like the gray and black looks on a engine
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#17 |
Registered User
Join Date: Apr 2004
Location: Carmarthen, Wales, UK
Posts: 102
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Re: 66 305E upgrade HELP!
Once you've junked that original carb and fitted the Holley, you'll be surprised how much better the motor pulls. Some advocate fitting a Pertronix ignition system, but mine still runs stock ignition and she's on the button every time.
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63 GMC fleetside, 305 V6; over-built, over thirsty and over here! |
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#18 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
what about hei distirbutor has and anybody had any luck with them?
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#19 |
Registered User
![]() Join Date: May 2007
Location: Deale Md
Posts: 4,663
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Re: 66 305E upgrade HELP!
I did some research on the HEI on ebay and the reviews were not to good.I use and most others use pretronix conversion.
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James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change! |
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#20 | |
Account Suspended
Join Date: Dec 2008
Location: indisclosed
Posts: 1,515
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Re: 66 305E upgrade HELP!
Quote:
Not a bad price when you consider it. |
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#21 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
whatare good high engine paint from a auto parts store
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#22 |
Registered User
Join Date: Apr 2007
Location: Elk Grove, CA
Posts: 375
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Re: 66 305E upgrade HELP!
I'm not too sure where you can get it but we always use Aerovoe engine paint at the shop I used to be at and it is GREAT paint. I don't recommend Duplicolor. Try to find a set of plaid valve covers maybe, that would look cool with black and gray.
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1964 C10 Shortened Shortbed Cammed LQ9 P&P 1967 C10 Trophy Truck BB 438 (soon to be worked on again) |
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#23 |
Registered User
Join Date: Jul 2010
Location: Richmond CA
Posts: 270
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Re: 66 305E upgrade HELP!
i look into the plaid valve cover,what are the factory color for the 305 did they al had th same color or each truck had it own color like my truck facory color was red but i dont know if the blue is oirginal to the engine
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#24 |
Registered User
Join Date: Apr 2007
Location: Elk Grove, CA
Posts: 375
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Re: 66 305E upgrade HELP!
I'm no expert but I think they all had Corporate blue..
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1964 C10 Shortened Shortbed Cammed LQ9 P&P 1967 C10 Trophy Truck BB 438 (soon to be worked on again) |
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