Putting a Big Block in a 68 C30 - Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Troy.Blackburn · 03-09-2011, 11:10 PM

After 22 years I've just rejoined the ranks of owners of 67-72 Chevy Trucks. My first vehicle which I bought in High School was a 68 Shortbed Stepside 6 cyl 3 on the tree C10. I was the second owner and I had it for 10 years before it was stolen.

I just bought a 68 Stepside 6 cyl with a 4 spd (w granny low) C30. Of course it's a long bed because they didn't make shortbed C30's.

I opted to buy a C30 this time because I wanted the heavier duty frame, but I'm going to shorten the frame to make it a shortbed.

I'd also like to put a big block in it to beef up it's towing capability. My question is should I try to limit myself to any certain year range of big blocks to keep installation as simple as possible? What's the newest I should consider and be able install it without having to change much more that motor mounts and I'm guessing the bell housing.

Thanks
Troy

Zoomin · 03-09-2011, 11:27 PM

As far as I know, the mounts have changed over time but the block hasn't.

coops714x4 · 03-09-2011, 11:27 PM

Troy here is my spin HOSS POWER I prefer the older motors and do a little trick stuff to em port and polish the heads and bump up the compression a little now I HATE wiring it sucks so my preference is stay away from EFI and later stuff Now each to his or her own but thats my spin GOOD LUCK Coop

03-09-2011, 11:10 PM	#1
Troy.Blackburn Registered User Join Date: Mar 2011 Location: Gretna. La Posts: 26	Putting a Big Block in a 68 C30 - Question After 22 years I've just rejoined the ranks of owners of 67-72 Chevy Trucks. My first vehicle which I bought in High School was a 68 Shortbed Stepside 6 cyl 3 on the tree C10. I was the second owner and I had it for 10 years before it was stolen. I just bought a 68 Stepside 6 cyl with a 4 spd (w granny low) C30. Of course it's a long bed because they didn't make shortbed C30's. I opted to buy a C30 this time because I wanted the heavier duty frame, but I'm going to shorten the frame to make it a shortbed. I'd also like to put a big block in it to beef up it's towing capability. My question is should I try to limit myself to any certain year range of big blocks to keep installation as simple as possible? What's the newest I should consider and be able install it without having to change much more that motor mounts and I'm guessing the bell housing. Thanks Troy

03-09-2011, 11:27 PM	#2
Zoomin Man of Mini-Talents Join Date: Sep 2009 Location: Oklahoma City, OK Posts: 4,295	Re: Putting a Big Block in a 68 C30 - Question As far as I know, the mounts have changed over time but the block hasn't. __________________ Steve Project - Ruth 66 Skylark Project - Lola 60 Biscayne Project - Iron Ox 54 GMC 100 Project - Darth 69 Camaro

03-09-2011, 11:27 PM	#3
coops714x4 Registered User Join Date: Mar 2011 Location: Cement Oklahoma Posts: 916	Re: Putting a Big Block in a 68 C30 - Question Troy here is my spin HOSS POWER I prefer the older motors and do a little trick stuff to em port and polish the heads and bump up the compression a little now I HATE wiring it sucks so my preference is stay away from EFI and later stuff Now each to his or her own but thats my spin GOOD LUCK Coop



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