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Old 05-20-2019, 12:14 PM   #1
bgonz
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Converting 72 Blazer to a BB, motormount/header questions ??

Just pick up a real clean 72 Blazer that had an engine/dashboard fire. I was told the engine was good, but figured it wasn't so I'm not terribly upset it needs an engine ............ I could easily just freshen the small block it came with and I'm sure that's the cheapest route, but I have a nice 454 with peanut ports that just makes sense for this truck. Couple questions I have before I dive in are .

#1 Do the BB POL mounts work well and leave the trans in the same spot as the small block did, or will the trans need some movement too ???

#2 Is there a header combo that works with the POL mounts, some say yes, some say no ????

#3 Is the truck really worth more with a 454 than a 350 ??? I figure the swap is only about a $500-$600 add on , being I already have the engine.

My plan is to build the truck super nice and keep it for a while, but eventually it may be sold off, so resale is important.

Thanks for the help !!!!
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Old 05-20-2019, 03:15 PM   #2
CG
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Re: Converting 72 Blazer to a BB, motormount/header questions ??

Personally I don't think a big block is an upgrade as far as resale value. Im not saying don't do it, just no value added, and possibly value taken away.
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Old 05-21-2019, 02:22 PM   #3
Sandtrap9072
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Re: Converting 72 Blazer to a BB, motormount/header questions ??

keep it a small block!
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Old 05-22-2019, 04:21 PM   #4
bgonz
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Re: Converting 72 Blazer to a BB, motormount/header questions ??

Quote:
Originally Posted by CG View Post
Personally I don't think a big block is an upgrade as far as resale value. Im not saying don't do it, just no value added, and possibly value taken away.

Thanks for the replies guys, I appreciate the advice. I've never seen any GM product worth more with a small block than a big block but hey, that's why I asked the question. I've also thought about maybe going LS as I've seen 5.3's going cheap but I have zero LS experience and don't really care to learn lol

Another question, What's the thoughts on air conditioning ??? Personally, I'll NEVER have the top on it so A/C means nothing to me, but I have to replace everything under the dash so aftermarket air might actually make it easier/cleaner looking????
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Old 05-22-2019, 05:05 PM   #5
72ironmike
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Re: Converting 72 Blazer to a BB, motormount/header questions ??

I like the big block idea from an aesthetic view. Sure would look nice under the hood dressed up like 72 Chevelle.

I do not think you would get hurt making it a big block.

LS' do make them a little more desirable. But I think that is only on very nice Blazers.

All of the above is just my opinion. You know what they say about opinions.
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Old 05-29-2019, 03:52 PM   #6
bgonz
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Re: Converting 72 Blazer to a BB, motormount/header questions ??

I've decided to go BB, now just gotta make it fit lol

I started another thread on the engine and drivetrain forum about engine placement .........

Thanks !!!
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Old 05-29-2019, 10:07 PM   #7
7D2N
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Re: Converting 72 Blazer to a BB, motormount/header questions ??

Big blocks fit with SB mounts, they look nice.
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