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12-30-2005, 04:07 PM
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#1 |
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Registered User
Join Date: Dec 2005
Location: Bellingham, WA
Posts: 167
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How good is the 402????
 I have a number matching 70 GMC LWB Truck w/ 402BB TH400, 373 Posi, 97K original miles, rust free, all original...I'll post pics later (Main bearings went out  ) But What I was wondering is since the 402 is pretty much just a boared out 396 from factory, will this motor loose a lot of strength if I get I machined. I plan on supercharging this motor, with a Vortech setup Let me know what you think How good is the 402BB???? Thanks!
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12-30-2005, 04:22 PM
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#2 |
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Registered User
Join Date: Feb 2005
Location: Texas
Posts: 581
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Re: How good is the 402????
I have the same 402 mildly modified. What are you building a 1/4 mile runner or a crusier?
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12-30-2005, 05:20 PM
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#3 |
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Registered User
Join Date: Dec 2004
Location: Green Bay, WI
Posts: 44
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Re: How good is the 402????
The 402 is a great engine, I've had several of them and they respond very well to preformance mods. Big Blocks rule!!!!
Last edited by cdyblu; 12-30-2005 at 05:24 PM. |
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12-30-2005, 05:53 PM
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#4 |
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Registered User
Join Date: Feb 2005
Location: Texas
Posts: 581
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Re: How good is the 402????
i LOVE MY 402
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12-30-2005, 07:43 PM
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#5 |
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Registered User
Join Date: Dec 2005
Location: Bellingham, WA
Posts: 167
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Re: How good is the 402????
I'm building a shop truck for my business, It will tow, drag, cruise, and what ever else I want I to do....I'm Only pushing for 400-500 horse nothing too outragous (at least for me) Oh and by the way I bought the truck last spring for......$50....drove it home!
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12-30-2005, 07:56 PM
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#6 |
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Senior Member
Join Date: Jun 2004
Location: Southern Ohio
Posts: 489
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Re: How good is the 402????
How about showing some pics of the truck.
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12-30-2005, 08:36 PM
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#7 |
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Registered User
Join Date: Dec 2005
Location: Bellingham, WA
Posts: 167
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Re: How good is the 402????
Pics arent that great, its dusk and rainy, I'll post better ones later...I threw in a pic of my 78 Jimmy, and 64 van..
     
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12-30-2005, 09:30 PM
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#8 | |
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Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,673
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Re: How good is the 402????
Quote:
__________________
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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01-02-2006, 12:05 AM
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#9 |
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Senior Member
Join Date: Feb 2001
Location: Ridgecrest. CA, USA
Posts: 1,715
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Re: How good is the 402????
I have a 402 and I like it! Is your truck a longhorn?
__________________
Billy   1970 GMC Sierra Grande 402/TH400 (Longhorn)14 years and counting rebuild! 1975 (Build) Chevrolet SWB 4X4 350 SB Lifted 6 inches 1970 Ford F250 Ranger 390 BB 2010 Ford Super Duty F250 XLT W/4 inch lift kit and Pro Comp Tires Hub Cap Freak!    I need another truck like I need another hole in the head!I'M IN THE MARKET...AS IT WERE! Last edited by longhorn70gmc; 01-02-2006 at 12:05 AM. |
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01-02-2006, 09:19 AM
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#10 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
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Re: How good is the 402????
It may only need a hone when you rebuild it.It could be original/never rebuilt so prolly not bored yet.You should be fine.Have a looksee.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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