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Posted

I'm looking for the right size 1/24th scale Hemi engine for the Revell '71 GTX  ,the Hemi out of the '71 Cuda looks a bit over sized . any help would be appreciated Thx 

Posted

You don't have many to choose from in 1:24th scale as most of the good ones are 1:25th scale, the Revell/Monogram 71 'Cuda and some blown race engines from various race cars.

Posted
2 hours ago, Mr mopar said:

The Hemi out of the '71 Cuda looks a bit over sized

That conversion has been done ( S.A.E. , c.March 1987 issue )  by @George Bojaciuk; I did the same with the c.1994 modified-reissue 1971 GTX ( moulded in yellow iteration ) .

George's conversaion is based on the c.1982 issue of the 1971 'Satellite' ( moulded in black ) ; he used the engine / transmission directly-from the 1971 Hemi 'Cuda Street Machine (non-stock air cleaner) . With the one I built , I used the GTX's Torqueflite ( cut-off the Hemi's 4 speed , then mated it to the 'Flight to it --- I didn't want to perform a correct Dana 60 conversion ) .

Everything drops right-into place , and looks like it's meant to be there . The weak points of the Monogram 1/24 scale 426 Hemi are :

- No oil pump nor filtre ( rob one from the GTX's 440 )

- No accessory engine breather ( should be on passenger-side rocker arm cover , per the 1970 & later EEC standards )

- No PCV ( roll your own ) 

- "Blob" Carter AFB's ( hidden-under air cleaner anyhow ) 

Do It To It ! 

Posted
4 hours ago, Force said:

You don't have many to choose from in 1:24th scale as most of the good ones are 1:25th scale, the Revell/Monogram 71 'Cuda and some blown race engines from various race cars.

So would a  Revell Funny car engine block and head work ? 

Posted
6 hours ago, Mr mopar said:

So would a  Revell Funny car engine block and head work ? 

Those engines typically use aftermarket blocks and have very little in common with a stock 426. 

Posted

In my conversion long ago, very long ago, I used the single plug heads and valve covers from a Monogram 1:24 funny car on the 440 block. Can't remember, but probably with the intake from an MPC hemi.  The wedge and hemi blocks are almost identical so it looks good in the car.  I also can't remember if I had to cut the intake to fit under the hood. Hope this helps.

Posted (edited)

You are right Brian, the later Monogram and Revell Funny Car engine blocks does not look stock,  the engine blocks in the nitro and alcohol classes are aluminum and not cast iron, they are aftermarket blocks and heads only based on the production Hemi's in specs like bore spacing and other measurements and now the blocks are forged or billet aluminum and heads are billet aluminum machined in CNC milling machines.
I don't know but maybe the Hemi in the early 70's  Barracuda and Duster Funny Car kits like the Snake and Mongoose Hot Wheels funny cars are closer to the street version as they used production blocks back then.

Edited by Force
Posted (edited)

A little clarification...

The 1/25 Revell Funny car kits with the early chassis - Ed McCulloch Duster, Jungle Jim Vega and so on - first issued in 1970 or so, have a hemi based on a stock cast iron block - they were before the aftermarket aluminum blocks like Keith black were available.  One of these engines would be a bit of work and look small in the  Plymouth.

The 1/24 funny cars first issued by Monogram in 1982 and later became Revell kits have an aftermarket aluminum block.  Careful, the later kits have dual plug heads. 

Edited by Muncie
Posted
18 minutes ago, 1972coronet said:

Keith Black , if I remember correctly .

Arias too, but I think those were more geared toward the tractor pulling market. There are three in the Blazin' Bison kit.

Posted (edited)
8 minutes ago, Fat Brian said:

Arias too, but I think those were more geared toward the tractor pulling market. There are three in the Blazin' Bison kit.

Arias was based on Chevy big block, Keith Black was the first to base his engine on the 426, Donovan based their engine on the early Chysler 392 Hemi, after that there has been several manufacturers, JP1, BAE, AJPE, TFX and some others and all based on the 426 and as the rules are today you can't use any other than the 426 Hemi specs.

Edited by Force
Posted
2 minutes ago, Force said:

Arias was based on Chevy big block, Keith Black was the first to base his engine on the 426, Donovan based their engine on the early Chysler 392 Hemi, after that there has been several manufacturers, JP1, BAE, AJPE, TFX and some others.

Interesting, I saw the hemi heads and figured it was Mopar based. 

Posted (edited)

Most all of the good 426 Hemi's in model form are 1:25th scale and Moebius are just that like the AMT, Revell and most of the others, Mr Mopar asked for a good one in 1:24th scale and there is the problem as it aint many to choose from as the only American model manfacturer who did 1:24th scale models was Monogram and the 1:24th scale models under the Revell name is just old Monogram tooling.

But, as the 426 Hemi is based on the RB engine you can put Hemi heads on a 440 block and no one will know the difference, in the real world the difference on the Hemi vs the other RB engine blocks is cross bolted main caps, 8-bolts for the fly wheel on the crank instead of 6 and the 8 bosses for the upside down head bolts in the lifter valley, otherwise the blocks are the same as all other RB engines.

Edited by Force

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