A little help, well actually alot of help would be appreciated - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Five0roller · 03-30-2009, 01:06 PM

Ive just bought an 85 C10 2wd. The body is in decent condition. Recently painted and everything. The engine need to be rebuilt. It drives and passed emmissions but im looking for advice on where I should start with my rebuild. It has a 305 4 speed in it with a granny 1st gear. I cant afford to drop a crate motor in it so im going to have to make due with the 305 for now. Let me know what you think.

Russell · 03-30-2009, 02:08 PM

First thing I'd do is go buy a 350 to replace the 305 with, and build it up properly while running the 305!

Five0roller · 03-30-2009, 02:11 PM

The other question i have with that is would i have to replace my transmission as well if I swap to the 350

85Bowtie · 03-30-2009, 02:31 PM

No, they're basically the same engine.

jdurant · 03-30-2009, 02:32 PM

What makes you think that you need a rebuild? If you are on a budget, maybe you should just go through it. Pull the intake, valve covers, and oil pan and inspect. If everything looks good, put it back together, maybe upgrade a few parts--look for deals. Clean everything, fix anything broken, find all your exhaust leaks. Tune, tune, tune. That could get you by for a long time with only spending a few dollars. Then if you want save and build a performance motor on the side.
You wouldn't have to change transmissions if you swapped though.

Five0roller · 03-30-2009, 02:36 PM

Keeping the 305 in while I build my 350 is a great idea. My exhaust is new but the engine leaks oil bad. Im not an expert mechanic. Is there any do it yourself help stuff on here telling me how to do that stuff

jdurant · 03-30-2009, 03:00 PM

Everything is on here. That little search function in the top right is pure gold. If you cant find it there, then just ask. Just dive into it and figure it out, you always have help here if you need it.

Five0roller · 03-30-2009, 06:28 PM

Quote:

Originally Posted by jdurant

What makes you think that you need a rebuild? If you are on a budget, maybe you should just go through it. Pull the intake, valve covers, and oil pan and inspect. If everything looks good, put it back together, maybe upgrade a few parts--look for deals. Clean everything, fix anything broken, find all your exhaust leaks. Tune, tune, tune. That could get you by for a long time with only spending a few dollars. Then if you want save and build a performance motor on the side.
You wouldn't have to change transmissions if you swapped though.

Would i have to pull the engine for this and im haveing a hard time finding how tos on doing the things you suggested. Any directions would be great.

Blue85 · 03-30-2009, 08:38 PM

I ran a 305 in my 85 chev for a couple of years, put a on an Edelbrock performer intake, dynomax elcheapo headers, dual exhaust, new plugs, wires, cap, and rebuilt the stock 4barrel carb. spent about $350 on parts, did the labor myself on a weekend, and had a decently strong running engine until i got my 355 built. The best part is, when you do build a new motor for it, you'll already have a nice intake and headers. You should start by doing a oil pressure and compression check though and make sure that your bottom end is good.

Russell · 03-30-2009, 09:55 PM

Do you know where it is leaking from? It may be possible to re-seal the engine without pulling it out...

gchemist · 03-30-2009, 10:23 PM

Welcome to the board. Keep running the 305 until it breaks. Unless you need to drive your truck every day. My old 305 would out run stock 350. The little engines are great. Under powered by great.

The first suggestions is to drop it!! A 2.5/4", or 4/6 or 5/7 drop makes a huge difference in looks. Keep it stock. Stock trucks look great with only a few modications.

03-30-2009, 01:06 PM	#1
Five0roller Registered User Join Date: Mar 2009 Location: Eagle Mountian, UT Posts: 10	A little help, well actually alot of help would be appreciated Ive just bought an 85 C10 2wd. The body is in decent condition. Recently painted and everything. The engine need to be rebuilt. It drives and passed emmissions but im looking for advice on where I should start with my rebuild. It has a 305 4 speed in it with a granny 1st gear. I cant afford to drop a crate motor in it so im going to have to make due with the 305 for now. Let me know what you think.

03-30-2009, 02:08 PM	#2
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: A little help, well actually alot of help would be appreciated First thing I'd do is go buy a 350 to replace the 305 with, and build it up properly while running the 305! __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

03-30-2009, 02:11 PM	#3
Five0roller Registered User Join Date: Mar 2009 Location: Eagle Mountian, UT Posts: 10	Re: A little help, well actually alot of help would be appreciated The other question i have with that is would i have to replace my transmission as well if I swap to the 350

03-30-2009, 02:31 PM	#4
85Bowtie Registered User Join Date: Mar 2009 Location: TN Posts: 410	Re: A little help, well actually alot of help would be appreciated No, they're basically the same engine. __________________ '69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73

03-30-2009, 02:32 PM	#5
jdurant Senior Member Join Date: Dec 2007 Location: Houston, Texas Posts: 679	Re: A little help, well actually alot of help would be appreciated What makes you think that you need a rebuild? If you are on a budget, maybe you should just go through it. Pull the intake, valve covers, and oil pan and inspect. If everything looks good, put it back together, maybe upgrade a few parts--look for deals. Clean everything, fix anything broken, find all your exhaust leaks. Tune, tune, tune. That could get you by for a long time with only spending a few dollars. Then if you want save and build a performance motor on the side. You wouldn't have to change transmissions if you swapped though. __________________ Joseph 87 Turbo Buick 92 5.0 Mustang coupe 87 GMC Sierra SWB 82 Chevy K5 Blazer 2wd

03-30-2009, 02:36 PM	#6
Five0roller Registered User Join Date: Mar 2009 Location: Eagle Mountian, UT Posts: 10	Re: A little help, well actually alot of help would be appreciated Keeping the 305 in while I build my 350 is a great idea. My exhaust is new but the engine leaks oil bad. Im not an expert mechanic. Is there any do it yourself help stuff on here telling me how to do that stuff

03-30-2009, 03:00 PM	#7
jdurant Senior Member Join Date: Dec 2007 Location: Houston, Texas Posts: 679	Re: A little help, well actually alot of help would be appreciated Everything is on here. That little search function in the top right is pure gold. If you cant find it there, then just ask. Just dive into it and figure it out, you always have help here if you need it. __________________ Joseph 87 Turbo Buick 92 5.0 Mustang coupe 87 GMC Sierra SWB 82 Chevy K5 Blazer 2wd

03-30-2009, 08:38 PM	#9
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,170	Re: A little help, well actually alot of help would be appreciated I ran a 305 in my 85 chev for a couple of years, put a on an Edelbrock performer intake, dynomax elcheapo headers, dual exhaust, new plugs, wires, cap, and rebuilt the stock 4barrel carb. spent about $350 on parts, did the labor myself on a weekend, and had a decently strong running engine until i got my 355 built. The best part is, when you do build a new motor for it, you'll already have a nice intake and headers. You should start by doing a oil pressure and compression check though and make sure that your bottom end is good. __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr.

03-30-2009, 09:55 PM	#10
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: A little help, well actually alot of help would be appreciated Do you know where it is leaking from? It may be possible to re-seal the engine without pulling it out... __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

03-30-2009, 10:23 PM	#11
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: A little help, well actually alot of help would be appreciated Welcome to the board. Keep running the 305 until it breaks. Unless you need to drive your truck every day. My old 305 would out run stock 350. The little engines are great. Under powered by great. The first suggestions is to drop it!! A 2.5/4", or 4/6 or 5/7 drop makes a huge difference in looks. Keep it stock. Stock trucks look great with only a few modications. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos



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