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09-25-2017, 03:29 PM
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#1 |
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Registered User
Join Date: Jul 2016
Location: Santa Rosa California
Posts: 52
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Turbo sb chevy c10
Hey guys! I have got a question about a turbo SB chevy. Heres the deal. Im a teenager who has a 70 C10 LWB and I dont think a turbo fits its personality very well but its got 3.08s in the rear and its really slow. I want to put a junkyard turbo on it, say maybe off of a 7.3 ford. It is a Ramjet 350. It has a aluminum EFI manifold with vortec heads and it makes 351 hp and 403tq.
Any advice? Thanks. 
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09-25-2017, 05:11 PM
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#2 |
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6>8 Plugless........
 
Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,133
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Re: Turbo sb chevy c10
I can't give you much advise, but here is a thread that another member has a turbo charged SBC in a square body. He has been driving it for a few years. I see PB robbed his pics too, but you can read through it or hit him up for info and questions I'm sure.
http://www.67-72chevytrucks.com/vboa...d.php?t=526497
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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09-25-2017, 11:10 PM
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#3 |
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60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Turbo sb chevy c10
A rear gear change would likely be cheaper than everything to add a turbo and will give you better acceleration.
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09-25-2017, 11:23 PM
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#4 |
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Registered User
Join Date: Aug 2017
Location: Tallahassee, FL.
Posts: 125
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Re: Turbo sb chevy c10
Wow, OP is from the same town I grew up. Small world, rofl.
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1998 Chevy Tahoe 2D 1949 Willys CJ2A 1967 C-20 Flatbed (Sold) |
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09-26-2017, 02:32 AM
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#5 |
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Registered User
Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
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Re: Turbo sb chevy c10
Ramjet as in the EFI crate motor? Those are no slouch and should move that truck around pretty well. There is so good aftermarket support for the ECU that can wake that engine up even more. As for turbos, there is a whole science behind those. You don't just go pull one out of a junkyard and slap it on and go. Put on a turbo that isn't right for your engine and you can really turn it into a dog. IIRC, the Ramjet is a 10:1 CR which will limit the boost you can run.
I second the advice from CaptainFab - go with a gear change. Maybe loosen up to the converter a little if it is an automatic.
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87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4 |
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09-26-2017, 12:08 PM
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#6 |
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Senior Member
Join Date: Dec 2011
Location: Moraga, CA
Posts: 799
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Re: Turbo sb chevy c10
I'm a huge fan of Engine Masters the web show from Motor Trend Online. They did a junkyard swap onto another V-8. And tested it on the dyno.
Here are my key takeaways from their project: 1) get the turbo solidly installed (proper clamps, brackets, exhaust manifolds and so on) 2) get the right fuel system (special carb or EFI system) 3) make sure you open up the ring gaps. 4) Don't forget #3 5) have fun
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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09-26-2017, 03:30 PM
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#7 |
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Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,791
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Re: Turbo sb chevy c10
With that kind of HP/torque you should get moving pretty easily even with 3.08 gears. What transmission are you running, and is it possible you have the wrong torque converter?
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I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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09-26-2017, 09:57 PM
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#8 |
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Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 975
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Re: Turbo sb chevy c10
I have a stock vortec 350, a Holley 4 barrel, headers, and 307 gears. Everyone including me seem to be impressed on how well it runs. Maybe you have some tuning problems.
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