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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> General Rodding Tech> Model A engine transplant, drivetrain elignments
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Topic Review (Newest First)
08-29-2008 11:08 PM
techinspector1 Just something that popped into my mind concerning the firewall/motor clearance. I've seen fellows cut out part of the firewall/floor and rebuild it with an old wheelbarrow or part of a wheelbarrow. Looks very sanitary.
08-25-2008 09:31 PM
Brian_B Wow! That is awesome! Definately unique.

No wonder you are going Y-block. Sounds like a great idea.
08-25-2008 03:36 PM
pcoghlan Brian

For me you just underlined another reason to do it, it is unique!

I will admit the catalyst for me was the Overhaulin' 1930 Model A, see engine below:

08-25-2008 02:47 PM
Brian_B Ok...I had to ask though. Guess it is not as much as I remember.

I was going to hotrod mine (56 F-100) until I went to the 06 supernats. There were only 4 Y-blocks in the whole thing.

At cruise ins and small shows...I get more attention than the high dollar vehicles. Most people have never seen a Y-block.
08-25-2008 01:53 PM
F&J The distributor looks great. It sure looks like it can come out without headaches. I know the motor is at an angle which makes the distributor get closer to the firewall when pulling it, but it does look promising. Maybe try pulling it when you get closer to building motor mounts. You may never need to pull it, and even if you had to lower the front of the motor by taking out the rubber mounts to do a repair, that's not really too bad.

The height of the motor: You need to work everything at once, like steering clearances on box & tierods, oilpan-to-road clearance, fan-to-crossmember, etc. It almost gets to a point where there is only one place the motor "can" be.

A high-ish looking motor is not such a bad thing in a hoodless 30s rod. Take a smaller profile motor like a flathead or SBC and when those are in the correct place, these motors sometimes seem lost in the compartment, as far as how low they look. That's why they look cool with blowers and other larger intake systems.

Maybe take a side view from further away to try to visualize the exhaust that you plan on.

I can't help but smile, that's so cool looking in there

I'm not a sbc hater really, I just love to see a unusual motor now & then.....and I think a Y block is such a nice style.
08-25-2008 01:27 PM
pcoghlan OK, fan pulley on. Makes almost no difference to be honest. Maybe pushed the fan out about 1/8". The thickness of the pulley metal where it mounts.
08-25-2008 01:11 PM
Brian_B I was just asking. I know you are working on clearance everwhere.
08-25-2008 01:03 PM
pcoghlan Brian, yes of course, silly me. I just threw the fan on without sticking the pulley on too!

I will dig out the fan pulley and see what difference that makes....
08-25-2008 01:01 PM
Brian_B I do not have my truck here to compare...but something looks odd on the front of that engine (to me).

Mine has a pulley on the water pump and a spacer for the fan which puts it out about half way in the shroud.

My only belt goes around the crank, water pump pulley, and the generator.

Maybe I am wrong.........

I will look closer tomorrow when I get up. I won't get home until around 1 AM. LOL
08-25-2008 12:27 PM
Mockup in place

So I removed the cross member (to be cleaned up this weekend) and lowered the backup engine into place.

These shots show the situation. I think it is pretty good but the fan does slightly impact the cross member.

The only thing that hits the firewall is the distributor which if I recess a small part of the firewall will give me another 1-2 inches.

The oil canister is an issue (3rd picture) but I purchased this ( last night so I think I am OK there as I can remote the oil filter.

Anything else look odd/bad? For example, is the engine low enough?

Based upon what you see am I way off in my assessment?

I am starting to think others might tread a similar path in the future so I am starting a project journal in the event it is useful. I will add some of the things I have tackled previously like painting the firewall which was a pain!

08-23-2008 09:36 AM
pcoghlan Thanks guys, I have a spare Y block that I might use for mockup purposes. It is complete.

I will post photos as I progress this.

Thanks for the comments on the rear end. I have no idea how long ago the car was rodded but the inclusion of the SBC didn't float my boat.

Thanks again,,,
08-19-2008 07:20 AM
Originally Posted by pcoghlan
Thinking about it the only snag is that I currently have the bare block, without heads/intake. Sounds like I will need to await the final assembly of the engine prior to mocking up mounts then.

I suggest waiting until you have the heads and valve covers as well as the timing cover, water pump and fan. This will allow you to set the engine to clear the radiator and also let you see how much firewall recess you may require. For the Ford Y-block I don't think the intake will interfere at the firewall area.

For overall appearance, you will find it to be best to keep the radiator in the original Model 'A' location (directly above the front crossmember) rather than moving it forward to clear the waterpump/fan assembly. More work to recess the firewall and set the engine to the rear, but will be much more satisfying in the end.

I like your rear axle setup. The coil spring rear should give a good ride.
08-18-2008 01:59 PM
pcoghlan Thinking about it the only snag is that I currently have the bare block, without heads/intake. Sounds like I will need to await the final assembly of the engine prior to mocking up mounts then.

08-18-2008 01:56 PM
speedydeedy FRISCO laid it out well.I do mine the same way.You have 4 bar rear suspension with what appears to be a 8" Ford rear end.
08-18-2008 12:39 PM
pcoghlan Thanks for all the feedback guys. It does sound like the process laid out by Frisco (much appreciated) is the one to follow.

Here is the current rear end setup in the event is it is material.
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