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09-18-2006, 09:01 PM
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#1 |
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Senior Member
 Join Date: Mar 2004
Location: Somewhere
Posts: 985
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307 verses a 350
hey all,
well i'm not all that familure with the merits of using a 307 over a 350 so i was hoping someone would inlighten me. thanks |
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09-18-2006, 09:05 PM
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#2 |
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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: 307 verses a 350
you *might* get better MPG...that's about it.
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09-18-2006, 09:07 PM
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#3 |
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State of Confusion!
 
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,947
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Re: 307 verses a 350
307 not nearly as powerful or does it have the torgue of a 350. I never had problems with them in my old Chevelles, but not sure how they would really do a a full size truck. Can't be any worse than a 305 in my opinion. It really just depends on what you want out of the truck/engine combo.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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09-18-2006, 09:13 PM
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#4 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: 307 verses a 350
You could wake up a 307. Carb, cam, intake, heads, headers, HEI upgrade, etc. She'd go. http://www.jalopyjournal.com/forum/s...ad.php?t=45615 Good reading about the 307.
Last edited by JAKES 68GMC; 09-18-2006 at 09:15 PM. |
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09-18-2006, 09:37 PM
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#5 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,322
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Re: 307 verses a 350
Go with the cubic inches and don't look back!
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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09-18-2006, 09:55 PM
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#6 |
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Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Re: 307 verses a 350
My mileage actually increased quite a bit in my 69 when I pulled out the 307 and put in a small block 400. The 400 has so much more torque, it isn't even breathing hard at 70 mph, where the little 307 was having to work pretty hard to push that much iron and wind resistance down the road.
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"Negative people always seem to have a problem for every solution" |
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09-18-2006, 10:41 PM
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#7 |
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Registered User
Join Date: Jan 2003
Location: Gulfport Ms
Posts: 401
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Re: 307 verses a 350
Mine started life with a 307. It held up good to about 160,000. It had a
2bbl and would only get about 12mpg. I changed it to a Holly 400cfm 4 bbl and it went to about 14. It would rev quick but ran out of power. It has had three other engines: 327 and built up 350. It currently has a stock 350 w/RV cam and gets about 17mpg. Changing to a 3.08 differential helped a lot. the 350 has much more power and runs smoother. It does not like pulling heavy trailers. It is now retired from that. Ed |
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09-18-2006, 10:42 PM
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#8 |
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18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: 307 verses a 350
yea 350 much better. I had a 307 fresh and it was all show and no go, but got the same milage as a 350 or worse. if you want to keep it for originality then fine but go with a 350 for the long run.
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... 
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