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04-06-2002, 12:00 AM
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#1 |
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Registered User
Join Date: Oct 2001
Posts: 23
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question about my 307
Hey guys, I'm only 18, and i know a 307 isnt the best engine in the world, but it was my grandpa's and it only has 73K on it, well i added the last 13K myself, anyways i know some performance parts of a 307 will trasnfer to a 350 in the future when my engine is shot, can anyone tell me what kind of intake manifold and carb will give my engine some more pep so 6 cylinders wont beat me , hehe,(yes it has happended numerous times). Here's a link to the picture of my truck
picture of my ride. http://www.tristatecorvetteclub.com/...how_00_078.jpg |
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04-06-2002, 12:10 AM
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#2 |
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Registered User
Join Date: Dec 2001
Posts: 97
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If you add a four barrel carb....don't go beyond a 600 CFM, because all your motor will breathe now is approx 510 cfm, Edelbrock has a variety of manifolds, check the speed catalogs/web sites.
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04-06-2002, 02:39 AM
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#3 |
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Recovering Truck Driver
Join Date: Mar 2002
Location: Orleans, NE USA
Posts: 1,883
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sweet looking 72, hei would be a big help, and the 600 cfm 4bbl, I had a 305 with a stock small block quadrajet, ran nice, not fast, but nice.
------------------ '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84 ralleys and 31/10.5s 67 Cutlass convertible 330, 3spd stick 90 GMC Jimmy 350/auto Chad Stephens Orleans,NE
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67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska |
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04-11-2002, 04:13 PM
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#4 |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,465
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Before you spend a nickel on mods, make sure you have good compression, no vacuum leaks, new plugs and plug wires, and properly operating mechanical spark advance. Otherwise, you're wasting your money. The first mod should be dual exhausts, which may be your biggest single improvement. 2" pipes will be fine for a 307, but your future 350 will like 2-1/4" or 2-1/2" pipes. While you're at it, make sure the heat riser valve on the passenger side exhaust manifold opens. If it doesn't open, replace it with a new one or a "blank". Then go with a small 4 bbl carb and LOW RISE manifold, such as an Edelbrock Performer 2101 or Weiand 8004. Don't even think about a hi-rise and big carb! Heck, even a Holley 500 CFM 2-bbl kicks butt on the 283 and 307. Other mods should include a distributor advance re-curve kit, MSD Blaster coil and new stock valve springs. If you have a sound engine to start with, you won't believe what a difference the above mods will make. I did something similar with my 307, before I dropped in a 350, and then a 383. Have fun!
------------------ MikeB 69 C-10 Fleetside, mild 383, Dart Iron Eagle 180cc heads, Crane Energizer 266 cam and 1.6 roller rockers, Edelbrock Performer manifold and 600cfm carb, HEI w/ MSD components, 1986 front spindles/disc brakes, Vintage Air in-dash, lowered 2"/3". [This message has been edited by MikeB (edited April 11, 2002).]
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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04-11-2002, 05:11 PM
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#5 |
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Senior Member
Join Date: Mar 2002
Location: 12 Miles South of Des Moines, Iowa
Posts: 359
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Great looking truck!!
You have mail. ------------------ 1969 C-10 292 I-6 4 spd in the middle of a restoration. going to get a 327 and 3.07 gears but keeping all of the original parts so I can put it back to original later on down the road. 55 chevy 4 door 150 47 Willys CJ-2A
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69 C-10, 340HP 327 55 chevy 4 door 150 47 Willys CJ-2A 05 Harley Night Train 06 1200 Sportster (Wife's bike) 70 Honda CL350 OIF2 & OIF7 Veteran  Nathan & Tiffany |
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04-11-2002, 08:26 PM
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#6 |
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Registered User
Join Date: Mar 2002
Location: Forney TX
Posts: 4,512
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Heres what you can do, Take a four bolt 350 block,standard bore preferably, put your 307 crank,If its large journal,into your block order kit for a 350 motor and you've got a 4 bolt 327 or 331 if bored .30. Good Luck and have fun. 350 rods also.
------------------ 1970 shortbed(project)
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Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274 |
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04-11-2002, 09:25 PM
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#7 |
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Account Suspended
Join Date: May 2000
Location: IL
Posts: 0
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need torque in heavy truck like that, IMO keep 350 a 350 or 400 crank in it for the torque increase to get the truck off the line
nice truck! glad it doesnt have 18's or 20s on it, yours looks nice!  good luck ------------------ Randy- Lincoln, IL r68c30@hotmail.com 71 C-10, trying to assemble....sigh.. parting out 5.0LTPI '81 cutlass supreme brougham *Paint is overrated © RSS Enterprises 2000 [This message has been edited by Fast68Chevy (edited April 11, 2002).] |
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