big bock in 4x4 blazer - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Gary 70 Jimmy** · 11-20-2015, 10:49 PM

I am putting a big block in my 69 blazer have a few question and maybe some one could give me some good advise on problems iI might have.

do they sell front springs for the BB extra weight or do they sell lift kits that are for a BB in a 4x4.
what motor mounts do you use.

ajviper · 11-23-2015, 01:28 AM

I haven't had a Blazer with a big block but I had a 72 K20 with one. It was installed with the small block mounts. The K20 was optioned with the HD Front springs (3 leafs) and seemed to sit fairly close to factory ride height.

**1rippen6** · 11-23-2015, 08:32 AM

I but a big block in my first blazer I to just used the small block mounts.

**Gary 70 Jimmy** · 11-23-2015, 05:59 PM

I thought the small block mounts would work I just wanted to make sure thanks for the help. Now I need to how to fix the leaf springs in the front to hold the weight.

ajviper · 11-23-2015, 10:22 PM

I would try a set of Factory HD springs (3 Leafs).

11-20-2015, 10:49 PM	#1
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,400	big bock in 4x4 blazer I am putting a big block in my 69 blazer have a few question and maybe some one could give me some good advise on problems iI might have. do they sell front springs for the BB extra weight or do they sell lift kits that are for a BB in a 4x4. what motor mounts do you use. __________________ 1972 GMC Jimmy 1/2 4X4 4wheel camper 1970 GMC Jimmy 1/2 4X4 350 1969 Chevy Blazer 1/2 4X4 307 1967 chevy LWB 3/4 396

11-23-2015, 01:28 AM	#2
ajviper Registered User Join Date: Jul 2014 Location: Lakewood, Colorado Posts: 90	Re: big bock in 4x4 blazer I haven't had a Blazer with a big block but I had a 72 K20 with one. It was installed with the small block mounts. The K20 was optioned with the HD Front springs (3 leafs) and seemed to sit fairly close to factory ride height.

11-23-2015, 08:32 AM	#3
1rippen6 Senior Member Join Date: May 2011 Location: Greencastle PA Posts: 6,708	Re: big bock in 4x4 blazer I but a big block in my first blazer I to just used the small block mounts.

11-23-2015, 05:59 PM	#4
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,400	Re: big bock in 4x4 blazer I thought the small block mounts would work I just wanted to make sure thanks for the help. Now I need to how to fix the leaf springs in the front to hold the weight. __________________ 1972 GMC Jimmy 1/2 4X4 4wheel camper 1970 GMC Jimmy 1/2 4X4 350 1969 Chevy Blazer 1/2 4X4 307 1967 chevy LWB 3/4 396

11-23-2015, 10:22 PM	#5
ajviper Registered User Join Date: Jul 2014 Location: Lakewood, Colorado Posts: 90	Re: big bock in 4x4 blazer I would try a set of Factory HD springs (3 Leafs).



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