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Old 12-16-2010, 11:34 AM
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RWD PT Cruiser

I am converting a PT Cruiser to RWD and plan to use an engine with standard SBC bell housing bolt pattern connected to a 700R4 with the "Small Corporate" bolt pattern (also known as the S-10 pattern) -- I have not found a commercial adapter and plan to make one myself -- I need accurate (to +/-.002") drawings of both SBC rear face and the rear face of a 60 degree GM V6 or the Small Corporate bell housing
Also welcome opinions on the durability of this transmission behind a 190 (rear wheel) HP engine and advice on any other pitfalls I may encounter -- Thanks in advance!

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Old 12-16-2010, 12:40 PM
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Seems to me some of the jeep guys have been there done that with that adapter...worth a search online anyway..The other part of may question is why as one can find lots of 700r4 with the coreect bolt pattern for an SBC..much easier that way..

Sam
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Old 12-16-2010, 12:52 PM
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Why would you not use a Chevy bolt pattern trans, no adapter needed?.......You will be rebuilding the whole floor anyways.....
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Old 12-16-2010, 01:27 PM
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pt bruiser

the baby 700R out of an S10 would work well in that setup. we have a couple in our car club that put a hemi in their pt it is very cool
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Old 12-16-2010, 02:54 PM
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http://www.speedwaymotors.com/ProductSummary.aspx?free_text|11/25/2010%206:08:22%20PM=91628907&deptId=0
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Old 12-16-2010, 06:28 PM
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Agreed, it would be much simpler to just use a 700R4 with the correct bell housing, but the slightly smaller dimensions of the "Small Corporate Bell housing" allow me to avoid relocating the accelerator pedal and I can keep almost all of the HVAC "suitcase" housing under the dash -- Anyone concerned about the ROUGHLY 9" torque converter that this transmission uses? I am new to automatics as this is my first project car that didn't have a manual, so try to be patient with my dumb questions -LOL
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Old 12-16-2010, 08:15 PM
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As suggested by Ohio Dan there may well be a COMMERCIAL ADAPTER, SPEEDWAY PN 91628907 -- I'll check it out and post answer. THANKS DAN!
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Old 12-17-2010, 06:23 AM
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pt

Quote:
Originally Posted by v123
Agreed, it would be much simpler to just use a 700R4 with the correct bell housing, but the slightly smaller dimensions of the "Small Corporate Bell housing" allow me to avoid relocating the accelerator pedal and I can keep almost all of the HVAC "suitcase" housing under the dash -- Anyone concerned about the ROUGHLY 9" torque converter that this transmission uses? I am new to automatics as this is my first project car that didn't have a manual, so try to be patient with my dumb questions -LOL
That is where I am confused, I thought the small corperate(baby700R) was the same as the V8 bolt pattern.(Better brush up on my chevys if I am gonna be a chevy guy!)
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Old 12-17-2010, 07:27 AM
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FWIW at a local show last year there was a PT Cruiser. I thought as I saw it "what dork would bring a PT Cruiser to a rod show", As I got closer I saw it had larger tires on the back and appeared to have a roll cage inside. Got a little closer to discover it had an LS7 under the hood, Ford 9" rear, tube chassis, and the driver drove almost from the rear seat position. From 50-75 feet away it looked like a stock PT Cruiser. It was very nicely done.

Vince
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Old 12-17-2010, 10:04 AM
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Quote:
Originally Posted by 302 Z28
FWIW at a local show last year there was a PT Cruiser. I thought as I saw it "what dork would bring a PT Cruiser to a rod show", As I got closer I saw it had larger tires on the back and appeared to have a roll cage inside. Got a little closer to discover it had an LS7 under the hood, Ford 9" rear, tube chassis, and the driver drove almost from the rear seat position. From 50-75 feet away it looked like a stock PT Cruiser. It was very nicely done.

Vince
My plan is the exact opposite: I am trying to get the RWD conversion done making as few radical changes as possible -- I am retaining the McPherson struts in front and have used an 8.8 Ford (with drums) on leafs in the rear. (Actually was able to hang the rear axle from slightly modified stock PT brackets for example) -- Tricked all the dash gauges into working with the new engine so avoided that expense -- Also, using a V6 (4.3L) avoids the need for radical firewall surgery and if I can make this "baby" transmission work I can retain all the HVAC components -- It is fun, a new challenge every day!
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Old 12-17-2010, 10:03 PM
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Just in case someone else stumbles across this thread I want to end it in a definative fashion.
I am very embarassed to admit I am at the end of my path with this transmission -- The fatal flaw in my plan is that the small corporate transmission bellhousing will not clear a flex plate greater than about 12.7 " in diameter and the starter in the "standard" Chevy type engines needs a larger diameter flex plate, roughly 14.63 inches
I regret having wasted everyones time!
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Old 12-17-2010, 10:23 PM
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not to mention the small pattern 700r4 was designed for the anemic 2.8L v6 and similar engines.. it's lifespan behind a v8 would not be very long...
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Old 12-18-2010, 12:15 AM
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Not a waste..this thread may save someone else some heartburn and cash..

Sam
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Old 12-18-2010, 04:46 PM
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A 153 tooth flexplate off a 305 will fit the 4.3, and it's about 12 3/4".
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Old 12-18-2010, 05:24 PM
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but it wont' fit inside the small bellhousing. the baby 700r4 they're talking about is for the 60 V6's like the 2.8 and possibly 4 cylinder engines.
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