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Old 03-17-2010, 09:47 PM   #1
jgreene0717
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71 C-10 Big Block Swap

Sold the small block to fund the big block swap. Here are the specs and some pics of the new rat.

454 .030 over
GM Steel Crank
GM Double Dimple Rods with 7/16 fasteners
TRW Forged Dome Pistons L2349F
781 Oval Ports with 2.19 1.88 valves
Lunati Hydraulic Roller 282/290 .600/.600 #60212
PRW 1.7 Ratio Rockers
Edelbrock Performer RPM Airgap
Holley 750 HP
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Old 03-17-2010, 11:53 PM   #2
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Re: 71 C-10 Big Block Swap

Looks awesome man. When ya gonna have it in and running.

I just put my bbc in my truck tonight
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Old 03-17-2010, 11:56 PM   #3
BossHogg69
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Re: 71 C-10 Big Block Swap

Good looking truck and nice motor - glad to see the BBC's are getting some love!
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Old 03-18-2010, 08:22 AM   #4
jgreene0717
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Re: 71 C-10 Big Block Swap

Cleaning up the firewall and frame rails for paint before installing. Should have it painted and the engine installed this weekend I will post some pics when it is in.
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Old 03-18-2010, 09:01 AM   #5
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Re: 71 C-10 Big Block Swap

Kool we can stress test the turbo 350 and 12 bolt soon.
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Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
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Old 03-20-2010, 11:34 PM   #6
jgreene0717
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Re: 71 C-10 Big Block Swap

Update got the firewall painted and engine installed. Have to get a convertor and headers so hopefully I will have it going soon.
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Old 03-21-2010, 01:13 PM   #7
djracer
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Re: 71 C-10 Big Block Swap

Looks sweet.
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Kevin

Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
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Old 03-21-2010, 03:46 PM   #8
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Re: 71 C-10 Big Block Swap

theres nothing better than a BB, awesome ride!
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Old 03-22-2010, 10:05 PM   #9
jgreene0717
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Re: 71 C-10 Big Block Swap

Moved motor back 1"1/4 tonight. I did not like how close it was going to be to the radiator or how far is was from the firewall. Should help weight transfer a little anyway.
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Old 03-22-2010, 10:15 PM   #10
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Re: 71 C-10 Big Block Swap

sweet bring a bunch of cash tomorrow and you can crank it this weekend.
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Kevin

Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
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Old 03-25-2010, 12:40 AM   #11
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Re: 71 C-10 Big Block Swap

What mount bracket is that? Will it let you go 3" back?
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Old 03-25-2010, 08:20 AM   #12
jgreene0717
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by Autometer View Post
What mount bracket is that? Will it let you go 3" back?
The mounts came from performanceonline.com. In small or big block applications they are made to mount in the forward holes on frame rails. You can use them in the rear most holes on frame for small block installation but the big block will not due to coming in contact with firewall. I moved it back as much as possible form front holes on frame and just redrilled the frame and crossmember to accept new location. It is back 1"1/4 from that point. In order to go back 3" you would have to modify firewall.
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Old 03-25-2010, 08:39 AM   #13
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Re: 71 C-10 Big Block Swap

What is the benefit of those....I like the way they look. Stronger I guess since they are tubular. Are they easier to install the engine ?
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Old 03-25-2010, 10:08 AM   #14
djracer
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Re: 71 C-10 Big Block Swap

Many Reasons. For one thing they are much cheaper than oe 72 up mounts. They are 129 for the mounts and the stands and they swap you to a car type mount so you can run solid mounts if you want. I would think they would help a little with hedder clearance and they should be easier to install.
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Kevin

Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
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Old 03-25-2010, 10:40 AM   #15
jgreene0717
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by bamabaxter View Post
What is the benefit of those....I like the way they look. Stronger I guess since they are tubular. Are they easier to install the engine ?
Dido on what djracer said.
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Old 03-25-2010, 10:58 PM   #16
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by jgreene0717 View Post
It is back 1"1/4 from that point. In order to go back 3" you would have to modify firewall.
My motor is already moved back 3" but never liked the look of my "custom" mounts. I really liked those.
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Old 03-25-2010, 11:12 PM   #17
djracer
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by Autometer View Post
My motor is already moved back 3" but never liked the look of my "custom" mounts. I really liked those.

Post a pic if you don't mind.
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Kevin

Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
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Old 03-26-2010, 12:01 AM   #18
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by djracer View Post
Post a pic if you don't mind.
This is the only pic I have on my computer. I'll have to go snap a pic of the mounts.
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Old 03-26-2010, 07:31 AM   #19
djracer
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Re: 71 C-10 Big Block Swap

Is the firewall notched?
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Kevin

Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
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Old 03-26-2010, 09:02 AM   #20
Hottrucks
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Re: 71 C-10 Big Block Swap

hey guys dumb question but how does the trany linkage line up ??? I'm getting ready to do a swap and was woundering if that was an issue??
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Old 03-26-2010, 10:19 AM   #21
jgreene0717
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by Hottrucks View Post
hey guys dumb question but how does the trany linkage line up ??? I'm getting ready to do a swap and was woundering if that was an issue??
I have not got that far yet on swap but all factory linkage will interchange between big block and small block. The only issue I would think will be header clearance.
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Old 03-26-2010, 12:16 PM   #22
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Re: 71 C-10 Big Block Swap

thanx I'm putting a caddy in mine so when I slide things in I thnk the linkage will be a good point to determine how far forward/back the motor need to be?? I'm going to have to make up a drive shaft anyway....
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Old 03-26-2010, 06:32 PM   #23
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Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by djracer View Post
Is the firewall notched?
[REDNECK]I used a come-along from the clutch hole to a seat mount to pull it in.[/REDNECK]

The cab isn't any good. I have another cab to use that i'll have to do a better job of notching the firewall.
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Old 03-27-2010, 11:23 AM   #24
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Re: 71 C-10 Big Block Swap

Good looking 454s.

We just put a '74 454 from a C-30 into my '71 lwb stepper. We had to use the BB mounts out of a '75 to get the header clearance for the style hooker headers I have.

This is not a power machine though, it is hooked to old style 4 speed transmission with an open 3.73 rear.

We could not use any of the pre-drilled holes and be able to mate up to the transmission.

I did not realize I would have a heat soak problem with my starter running headers so now I have to get a mini starter. I should have though since I know others have had the same problem.

We used the BB radiator shroud out of the '74, but had to modify it some to clear the crank pulley, power steering pump and alternator.

I still have not got around to taking pictures, I guess I better add it to my to do list.

Danny
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Old 03-27-2010, 12:16 PM   #25
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Re: 71 C-10 Big Block Swap

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I did not realize I would have a heat soak problem with my starter running headers so now I have to get a mini starter. I should have though since I know others have had the same problem.
Get a snap on heat shield first to see if that'll do the trick.
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