Putting a Big Block in a C10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ryans69chevy · 11-20-2011, 05:00 PM

For you guys that have put big blocks in these years of c10's what kinds of things did you do to your trucks to compensate for the extra weight and power? Upgrade suspension any? Disc brakes all the way around or just in front? Or does the suspension even need to be improved since some of these trucks came with big blocks from the factory. My '69 currently has a 307, so maybe it doesn't have some of the same compenents that the big blocks came with. I'm not sure though.

Thanks

GASoline71 · 11-20-2011, 05:03 PM

Big block springs in front (i think), different tranny, bigger radiator, different motor mounts. Even the older BB trucks had drum brakes all the way around.

Gary

**Already Gone** · 11-20-2011, 05:58 PM

My 72 long box C10 came from the factory with a small block and has a 396 now but had the heavy duty front and rear springs ( coils all the way around) and the truck sits, rides and handles as it should.
Posted via Mobile Device

ryans69chevy · 11-20-2011, 08:17 PM

How do you know if the springs are heavy duty or not?

1972RedNeck · 11-20-2011, 10:46 PM

If they are stock, the spid should say "heavy front/rear spring" if they are heavy.

11-20-2011, 05:00 PM	#1
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	Putting a Big Block in a C10 For you guys that have put big blocks in these years of c10's what kinds of things did you do to your trucks to compensate for the extra weight and power? Upgrade suspension any? Disc brakes all the way around or just in front? Or does the suspension even need to be improved since some of these trucks came with big blocks from the factory. My '69 currently has a 307, so maybe it doesn't have some of the same compenents that the big blocks came with. I'm not sure though. Thanks

11-20-2011, 05:58 PM	#3
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,139	Re: Putting a Big Block in a C10 My 72 long box C10 came from the factory with a small block and has a 396 now but had the heavy duty front and rear springs ( coils all the way around) and the truck sits, rides and handles as it should. Posted via Mobile Device __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

11-20-2011, 08:17 PM	#4
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	Re: Putting a Big Block in a C10 How do you know if the springs are heavy duty or not?



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