1973 Chevy Vega V-8 swap

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1973 Chevy Vega V-8 swap

Postby Chevy Sam » Thu Sep 03, 2015 10:42 am

I have a 1973 Chevy Vega hatchback and i've been wanting to put a 400 Chevy Smallblock in it for quite some time, what is a good rear axle and what is a good automatic transmission for a budget build, would the original th350 work with a V-8?
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Re: 1973 Chevy Vega V-8 swap

Postby 67shovel » Fri Sep 04, 2015 10:59 am

Budget build.....I used an s10 blazer (2000 model). Yes, a 350 turbo will work and fit well in your Vega behind a SBC.
79 Monza wagon Pro street, cage tubs narrowed 9
73 GT Vega wagon street car 355 700r4 a/c
68 RS Z/28 302
67 SS 396
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65 Corvair Corsa midengine 301
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Re: 1973 Chevy Vega V-8 swap

Postby Chevy Sam » Fri Sep 04, 2015 2:15 pm

What gears are in the rear end from an s10
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Re: 1973 Chevy Vega V-8 swap

Postby Smiley » Sun Sep 06, 2015 4:07 am

GU4=3.08
GU5=3.23
GU6=3.42
GT4=3.73
GT5=4.10
HC4=4.56

G80 - posi carrier
gear ratio codes are on a sticker in the glove box

The 2WD rear end is the correct width, 4WD is wider.
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Re: 1973 Chevy Vega V-8 swap

Postby chevyart » Mon Sep 07, 2015 10:19 am

smiley you really got the s-10 goodies down pat. how the heck did you know all that about the rears?. just curious art
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Re: 1973 Chevy Vega V-8 swap

Postby Smiley » Mon Sep 07, 2015 9:01 pm

I did a few V8 S10s in between the Vega's and Monzas I have owned.
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Re: 1973 Chevy Vega V-8 swap

Postby b_pappy » Sat Sep 12, 2015 4:29 pm

Smiley wrote:I did a few V8 S10s in between the Vega's and Monzas I have owned.


Filing this away under very useful info, when I finish the Vega my wife may want an S-10 conversion :-)
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