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Old 10-18-2007, 01:38 AM   #1
65chevy4x4
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Big Block Engine Swap

Could any one tell me what i need to put a big block in a 1972 chevy 4x4 truck.It had a small block 350 in it.
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Old 10-18-2007, 01:42 AM   #2
JHART
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Re: Big Block Engine Swap

Big Block motor mounts ... TH400 tranny ... better radiator(just my .02).

You will need new exhaust of course ...well headers at least.

-Hart
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Old 10-18-2007, 04:01 AM   #3
65chevy4x4
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Re: Big Block Engine Swap

How about the oil pan? It has a 350 tranny.Thinking of going with a stick shift trans.
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Old 10-18-2007, 10:51 AM   #4
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Re: Big Block Engine Swap

Many people run into firewall issues, but some don't. Some beat the firewall in for clearance, others move the engine forward a bit. The 4x4 subforum has some posts on this. I choose to modify my firewall and I added a body lift to fit my bbc.
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Old 10-18-2007, 01:26 PM   #5
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Re: Big Block Engine Swap

This should be in the 4x4 forum.
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Old 10-18-2007, 03:50 PM   #6
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Re: Big Block Engine Swap

I put a 454 in my 72
The SBC engine mounts will work with a BBC.
The bell bolt patters are the same between SBC & BBC but I wouldn't recomend a TH350 behind a 454, a TH400 is a much better match.
I have a SM465 manual so I don't know anything about autos.
Other than the firewall issue and header fitment issues the 454 is a bolt in affair.
Oh and swapping a 3core rad for a 4core is needed too.
I left out alot more info on how I did it but my swap was not basic but a BBC will drop right in for the most part.
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Old 10-18-2007, 03:57 PM   #7
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Re: Big Block Engine Swap

Quote:
Originally Posted by 65chevy4x4 View Post
How about the oil pan? It has a 350 tranny.Thinking of going with a stick shift trans.
I used a stock style oilpan that has internal 'tray' 'flaps', my engine builder buddy recomended that type for off-road to prevent oil sloshing and starving the oil pump in off camber situations.
If you do go with a manual tranny I recomend the SM465\NP205 combo, strong and hell and very reliable.
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Old 10-19-2007, 08:37 PM   #8
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Re: Big Block Engine Swap

Check my link to see that a stock SM465/205 combo is strong!!!!!

A........
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