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04-20-2008, 04:55 PM | #1 |
Registered User
Join Date: Jul 2001
Location: Praireville. LA 70769
Posts: 390
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Which set up is better?
I have a 70 C-10. It has orginal 250 and 3 speed. I could put a 350 or 4l60 behind the 250 and add intake, headers, and carb for improved performance. I also have a 92 350 out of a 3/4 van to put in the 70 with the 4l60. The 350 is stock, but add ons are cheap and plenfiful. Like everyone else looking for power and gas mileage. I keep changing directions with this decesion daily and need to move on to get truck on the road. Chime in with thoughts no wrong or right answers, and good day.
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11 Surbaban 70 C 10 still in progress |
04-20-2008, 05:10 PM | #2 |
Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Which set up is better?
I'm a stickler for originality now that I'm older, but I do have a 69 that I swapped a 350/350 in it and added ps and pb many year ago. Used to be a 250 three speed manual. I didn't gain any mpg but did get a stronger truck that was easier to drive.
Mpg on the original worn out 250 was about 14-15 on the highway and after the swap with a quadrajet I still got 14-15... |
04-20-2008, 05:18 PM | #3 |
VA72C10
Join Date: Mar 2008
Location: Midlothian, VA
Posts: 25,267
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Re: Which set up is better?
Agreed, if you're going for originality or trying to keep it bone stock for value reasons, you should keep the 250. i know there are several on here who have upped the mpg with mods. But from a cost/benefit basis, i would do the 350 swap as you will have more power and potentially similar mileage depending on the add-ons you choose.
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04-20-2008, 05:55 PM | #4 |
Registered User
Join Date: Jul 2001
Location: Praireville. LA 70769
Posts: 390
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Re: Which set up is better?
I have p/s and p/b on the truck now. Is the 350 which is a vortec(92) any good? Keeping everything orginal in not a problem.
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11 Surbaban 70 C 10 still in progress |
04-20-2008, 06:57 PM | #5 |
Chasin' the Dream
Join Date: Mar 2008
Location: Lost in the 70's
Posts: 200
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Re: Which set up is better?
You should keep the 250 and send me the 350 vortec/4l60!!!!
Seriously, thought, I would opt for the swap. That is my plan. I have a 350 core, TPI set-up, still waiting on the OD tranny and a few misc engine parts for my 71. Good luck however YOU choose to go! Jerry |
04-21-2008, 12:40 AM | #6 |
Registered User
Join Date: Aug 2001
Location: escondido, ca 92026
Posts: 1,222
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Re: Which set up is better?
if power and gas mileage is your goal, go smallblock cuz gas mileage is not much worse than the 6 and you'll appreciate having the power, no doubt....
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'72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project |
04-21-2008, 01:00 AM | #7 |
Gone to greener pastures
Join Date: May 2007
Location: Gateway to the Delta
Posts: 7,354
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Re: Which set up is better?
Nothing is better than good ol' fashion American V-8 horsepower.
In my not so humble opinion, of course.
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'69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck |
04-21-2008, 05:33 AM | #8 | |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,672
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Re: Which set up is better?
Quote:
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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04-21-2008, 09:41 AM | #9 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: Which set up is better?
As much as I like the 250, they cost a bunch of money to upgrade. Headers, intake and a 4 barrel carb can easily run $800 to1,000 by the time you get all the needed accessories. And that still leaves you with a head that flows like molasses.
If you're not worried about originality and cost is a big factor, go with the SBC. If you want originality, or want to dare to be different, go with the six. If you really want power out of a six, find a 292. And get Leo Santucci's book on Chevy Sixes. Me, I have a 69 with a 300 hp small block, and a 52 with a mostly stock 235. I like them both, and they both have their place.
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Fred There is no such thing as too much cam...just not enough engine. |
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