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Jon Kaase Racing Engines Jon Kaase is considered one of the best minds in the world of Big Block Fords and has created many parts to help enthusiasts with their 460 based projects. Gentlemen start your questions…
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  #1  
Old 03-22-2012, 05:50 PM
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Default Boss Nine Dimensions

Hey gang

ive shot off an email to the crew at Kaase but understand they are busy so thought i would try here.

just wanted to know the dimensions of a boss nine engine compared to a standard 460... mainly after the width, but any dimentions (possibly with a diagram?) would be great.

my XA Falcon has an engine bay similar to a '70 mustang (maybe torino) i think so if i can get your shock tower width also it would help me compare.

here is a pic i took when doing mock up which shows how much room i have now. If i was to look at a boss nine i would notch the towers and an RRS suspension.


cheers
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Old 03-22-2012, 07:11 PM
bob460 bob460 is offline
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NO chance man, you have to modifi the shock towers to fit it in, it will fit in my xb sedan but only because i have no shock towers.(strut coil over front end)
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  #3  
Old 03-22-2012, 07:19 PM
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Quote:
Originally Posted by bob460 View Post
NO chance man, you have to modifi the shock towers to fit it in, it will fit in my xb sedan but only because i have no shock towers.(strut coil over front end)
you got an rrs front end bob or something like the McDonald bro front end kit? can you show pics? engineered? if its engineered and rego'd did you have any hassels?
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Last edited by mr_xa460; 03-22-2012 at 08:10 PM.
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Old 03-22-2012, 09:08 PM
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Quote:
Originally Posted by bob460 View Post
NO chance man, you have to modifi the shock towers to fit it in, it will fit in my xb sedan but only because i have no shock towers.(strut coil over front end)
If an RRS suspension (don't have the first clue what that is) is anything like a Mustang II front suspension, it'd be easy to make one fit.

Look at Heidt's front suspension conversion (just one example) for the Falcons, Mustangs, Fairlanes, etc. A 8.2" deck height Windsor (221, 260, 289, 302) barely shoehorns between the shock towers of an early Falcon, but with a Heidt's or Rod & Custom Mustang II front suspension convertion, FEs and 385s easily fit in one of those cars. http://www.rcmotorsportsinc.com/
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Old 03-22-2012, 09:40 PM
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Pm sent, maybe mr xa460 can post my pics on here for an example of my set up as i have the same engine bay as him.
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Old 03-23-2012, 07:36 AM
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with an rrs suspension front end you can fit a modular motor into our falcons with notched shock towers so would be interesting to hear how much difference between a mod motor to a boss nine size wise
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Old 03-23-2012, 08:45 AM
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hey brother if you could manage to find a picture of the front end your speaking of i think you would get a better response. If it's anything like a mustang II front end and you plan to notch the towers, it will fit!
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Old 03-23-2012, 10:49 AM
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Quote:
Originally Posted by 66prostreetFairlane View Post
If it's anything like a mustang II front end and you plan to notch the towers, it will fit!

x2


With a Mustang II-type front suspension, I would presume the towers could be permanently cut out/removed (the entire tower) altogether, freeing up a LOT of room.

Don't know about a Boss 9, specifically, but I believe the original Boss 429s were something to the tune of 29" wide from VC edge to VC edge. I would think a Boss 9 has to be roughly the same.

Last edited by Zac; 03-23-2012 at 10:57 AM.
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Old 03-24-2012, 04:56 PM
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Google is your friend guys

here are some links off the RRS website. For you US blokes, there are suppliers over there now too i believe for RRS gear. RRS is Aussie made too

Notched towers:
http://www.rrs-online.com/shocktowerproducts.php

http://www.rrs-online.com/frontcoilovers.php

I also found these pics off Kaase's website, and im not sure what model car it is, but the engine bay is very similar to my XA only LHD. Appears the shock towers have been notched similar to the RRS setup.



hope this helps explain what i was getting at

cheers
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Old 03-25-2012, 09:34 AM
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I was looking at Kaase's web site and noticed the following information at the bottom of the page that talks about their Boss 9 heads. Is that what you were looking for?

"Total width of the Kaase Boss Nine engines on a 10.320 385 series block from valve cover to valve cover is 29 inches."
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Old 03-28-2012, 09:45 PM
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I am in the middle of putting a Boss 9 in a 66 fairlane with a Mustang II front end Cliff from Jon Kaases shop sent me some cad drawings of the boss nine. The only trouble I am having is getting the engine low enough to keep everything under the hood. Oh well that is what hood scoops are for

Rick
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Old 03-29-2012, 08:26 AM
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Quote:
Originally Posted by bossfairlane View Post
I am in the middle of putting a Boss 9 in a 66 fairlane with a Mustang II front end Cliff from Jon Kaases shop sent me some cad drawings of the boss nine. The only trouble I am having is getting the engine low enough to keep everything under the hood. Oh well that is what hood scoops are for

Rick
Do you have any pictures of where your at now? If you move the motor back and run a rear sump pan, should not be a problem. I'm not sure how much of yours is stock and what you end plan is. I have a cusomt mustang II setup and it's set back roughly 8 inches.
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Old 03-29-2012, 08:17 PM
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I have a reall MustangII front end and I am using a rear sump pan from Ford Racing. Kaase sent me a blemished head so I could mock up the engine compartment for motor mounts I have put an entire new frame in the car.
Right now it has no firewall, floor boards, engine compartment sides. and I am finding everything is real tight.Have to relocate master cylinder I might try to take some pictures and see if I am smartr enough to post them

Rick
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Old 05-01-2012, 02:33 AM
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hey mate, it will still be a tight squeeze with the BOSS9s in the XA i know because i'm setting up my XA coupe to fit the boss9's im using another front end design (not RRS), it will completely remove my shock towers all together.
i wouldn't bother with boss9s on a standard block though, i'd just say to use P51s, there's plenty of engines making 800+hp on the street with those heads now, shoot an email off to Kaase about it, and it'll fit in as the car is now i think.
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  #15  
Old 05-04-2012, 01:36 AM
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The front strut package looks good.I reckon it would be some coin for it.I was going to buy the rack steering kit off them till I found out it was $1400.Pipes coming out where steering box,is a pain to fit.
Cheers
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