Headers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sgtfluffy16 · 01-31-2018, 11:07 AM

I have a 51 3100 that i am putting a 305 SBC, 700R4 trans, and 12 bolt out of a K10. I have 2 questions.

stock frame, stock front axle, stock steering column and steering gear. what header do i use? I heard a 265 front exit log header. I would like to do something with better flow. i also know that spacing the steering gear box out 2 inches is not uncommon either when doing this swap.

Now for the rear axle. With the purchase of these rear axle brackets (https://www.classicparts.com/1947-54...ctinfo/93-317/ How do i install the springs? They are factory height and still have the overloads on top. do i have to get another steel plate to mount on the (bottom) of the leaf springs to secure them to the rear axle? The factory has the rotation cam because its a torque tube currently and they springs mount under the axle tube.

**mr48chev** · 02-02-2018, 02:15 AM

Offsetting the engine to the passenger side a tad helps with clearance and you don't have to move the steering box so far. You can't go much though as the clearance on the passenger side isn't that great.

**hogfarm** · 02-02-2018, 08:16 AM

Good luck with the headers,I bought and returned 4 sets before I got it right

Sgtfluffy16 · 02-02-2018, 08:29 AM

Quote:

Originally Posted by hogfarm

Good luck with the headers,I bought and returned 4 sets before I got it right

......and? What did you end up with?

01-31-2018, 11:07 AM	#1
Sgtfluffy16 Registered User Join Date: Jun 2016 Location: Dillsburg Posts: 57	Headers I have a 51 3100 that i am putting a 305 SBC, 700R4 trans, and 12 bolt out of a K10. I have 2 questions. stock frame, stock front axle, stock steering column and steering gear. what header do i use? I heard a 265 front exit log header. I would like to do something with better flow. i also know that spacing the steering gear box out 2 inches is not uncommon either when doing this swap. Now for the rear axle. With the purchase of these rear axle brackets (https://www.classicparts.com/1947-54...ctinfo/93-317/ How do i install the springs? They are factory height and still have the overloads on top. do i have to get another steel plate to mount on the (bottom) of the leaf springs to secure them to the rear axle? The factory has the rotation cam because its a torque tube currently and they springs mount under the axle tube.

02-02-2018, 02:15 AM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,718	Re: Headers Offsetting the engine to the passenger side a tad helps with clearance and you don't have to move the steering box so far. You can't go much though as the clearance on the passenger side isn't that great. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

02-02-2018, 08:16 AM	#3
hogfarm Senior Member Join Date: Jan 2016 Location: Appleton Washington Posts: 592	Re: Headers Good luck with the headers,I bought and returned 4 sets before I got it right



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