A question regarding swapping a SBC TO caddy

Red98422

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So I bought a new car that’s been SBC swapped, of course I would love to put the caddy in there. I don’t care if it sticks out the hood.

that said do any of you fine fellows have the measurement difference between motor mounting points....assuming a fixed trans location?
 

80burb472

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472 powered suburban
i have done a 472 swap in my 80 suburban. the are 2 answers to your question depending on how your perches are setup in your chassis....AND...on what mounts you will be using. Are you gonna use the factory 68-76 that have 1 bolt that goes thru the perch? or are you gonna use the 77-79 425 bracket/clamshell style mount?
 

5one9

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Did I miss what kind of car it was?
 

Red98422

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i have done a 472 swap in my 80 suburban. the are 2 answers to your question depending on how your perches are setup in your chassis....AND...on what mounts you will be using. Are you gonna use the factory 68-76 that have 1 bolt that goes thru the perch? or are you gonna use the 77-79 425 bracket/clamshell style mount?

honestly I think I’m just going to go with a fabbed solid mount.

my question mainly is about the thicknes of the block at the mounting point, i don’t have a whole lot of real estate to work with and not a whole lot of room to the front of the radiator either

here’s the current motor mounts.
 

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5one9

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2007 Magnum SRT8, 1957 F100
An MGB would barely have enough room in the passenger compartment
 

Red98422

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An MGB would barely have enough room in the passenger compartment
to be fair the bell housing sits about a foot from the firewall currently lol, the issue is the lower block width to the frame rails I think, hence my original question.

Current setup sits a bit proud and exhaust vents straight out, not too bad of a setup for something done quick and fairly simply.
 

Darius

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Does this help?

bro. d
 

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Caddylackn

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I think this is one of those rare situations where I think the 425 is a better engine choice than a 472. The engine weight savings and lower torque may let you use a turbo 350 and save a bunch of weight and frame reinforcement, plus less trans tunnel mods. The 425 is not really going to weigh anymore than the 350 that's coming out.
 

5one9

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I think this is one of those rare situations where I think the 425 is a better engine choice than a 472. The engine weight savings and lower torque may let you use a turbo 350 and save a bunch of weight and frame reinforcement, plus less trans tunnel mods. The 425 is not really going to weigh anymore than the 350 that's coming out.
There is absolutely no situation where a 425 is better than a 472, including this one. What are you talking, 50 pounds? If you want less torque leave the 350 in it and save the headache.
 

Red98422

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I think this is one of those rare situations where I think the 425 is a better engine choice than a 472. The engine weight savings and lower torque may let you use a turbo 350 and save a bunch of weight and frame reinforcement, plus less trans tunnel mods. The 425 is not really going to weigh anymore than the 350 that's coming out.

to be clear I have absolutely zero intention of being able to close/keep the hood, I don’t mind that it’ll sit proud.

I know @Monzallac 425 stuffed one into his Monza but he also did the work to sit it into the engine bay way low and back. in comparison.

im already going to be 9” swapping it and caging it so I’m not overly concerned on reinforcement. I have a tricked out BOP th400 as needed.


There is absolutely no situation where a 425 is better than a 472, including this one. What are you talking, 50 pounds? If you want less torque leave the 350 in it and save the headache.

It’s either getting my 500 or it’s staying SBC, no worries there. Want to make a ignorantly sketchy and fun car and I have quite a few parts for the 500 already. Was originally going to build out my Datsun, but really dragging my feet as that would make it necessary to back half and solid axle swap it....and I would miss another year of racing.
 

Red98422

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Tomorrow I’m going to measure the block Thickness at their respective mounting points.

the chart posted by @Darius gave me just enough hope that it may actually fit! Gonna get after it and get back to y’all, maybe someone else could use that measurement even if it makes it unfeasible to me.
 

48Austin

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There was a guy on ytube that put a big Cad in a Triumph TR7.
 

48Austin

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He has 2 more vids.
 
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