322 performance mods? - Antique Automobile Club of America Discussion Forums

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#485826 - 02/08/08 05:36 PM 322 performance mods?
downunder pat downunder pat Member Registered: 12/26/07 Posts: 20	Hello one and all. What performance could i expect out of a 322/ in a 1955 century with the follwing mods mid size cam from ta performance( ta 30) =in .426 ext.426 at (0.050 in 228 ext 244 overlap@.0508 fitted with rhoades lifters to reduces duration 10 to 15 degrees 0.20 to 0.30 at idle revs then has full pump at 3500 rpm . Stage 1 heavier valve springs.Extractors,electronic dizzy and graft 600vac holley to standard 4 barrel manifold.I just wondering which set up might work better or what hp or even better what the car would drive like in the real world? Would it have loss of bottom, end to what extent ect.Is this type of lifter more trouble than what their worth on a old engine? I have been told that any particles in engine will block these very easly. Have had trouble with dynaflow so plan to put t400 box in . Any feed back would be greatly appreciated Patrick Maiden BCAu 991 nsw problock@iprimus.com.au Edited by downunder pat (02/08/08 05:39 PM)
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#485846 - 02/08/08 07:00 PM Re: 322 performance mods? [Re: downunder pat]
The Old Guy The Old Guy Member Registered: 02/13/00 Posts: 2074 Loc: Swartz Creek MI. U.S.A .	pat Putting in a 400 trans will require a trans adaptor. The ST-400 will mount to a 364 or a 401-435. but your 322 has a smaller bell housing. Usually installing a cam with more overlap will hurt the bottom end, but the rhoads lifters will help If you are going to the expense of an adaptor, I would suggest getting one for a 200-4R or a 700-R4 as they are both overdrive trannies . You could then play with the rear axle ratios to get whatyou are after. _________________________ 37 46 modified with 455 & all the toys 40 56C original restored (driven over 100,000 miles by me) 69 Sport Wagon (BDE travelling car) 72 GS 455 ( used to harass Mustangs & Camaros) 95 Roadmaster wagon 96 Roadmaster wagon 04 Rendezevous (Mama's ride)
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#485920 - 02/09/08 01:07 AM Re: 322 performance mods? [Re: The Old Guy]
downunder pat downunder pat Member Registered: 12/26/07 Posts: 20	Thanks old guy for your reply.Yes i will have to put a adaptor plate/ bellhousing onto 322 .I have a blown dynaflow in car at the moment (low speed blown, drive and reverse still work)Can have dynaflow rebuilt about $2500.00 auzzi dollars,And i am told cant be certain about being reliable.And may blow again.So t400 or as you said t 700 would be the go, and sounds like a dodge phoenix diff ? because in Australia there about quarter the price of other diffs, I dont have deep pockets but i would rather let the 55 sit and save for the right way to get this thing done than risk it happening again.also have post about the possiblity of changing standard diff fom enclosed to open drive train? Patrick Maiden BCAu 991 nsw Edited by downunder pat (02/09/08 01:08 AM)
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#486176 - 02/10/08 10:05 AM Re: 322 performance mods? [Re: downunder pat]
old-tank old-tank Member Registered: 12/29/99 Posts: 973 Loc: Seguin, TX, USA	Pat I installed a cam in my convertible with similar specs. It was a reground 56 cam and I used stock 56 lifters and pushrods along with rebuilt rockers. It ran very well at higher rpm's but was much more sluggish than stock with the dynaflow in Drive using the stock 3.4 rear gears. I changed to 3.6 gears from a Special and now the drivability in Drive is similar to stock, but it also starts cookin' sooner. Everything else is stock: carb, single exhaust with quiet muffler, etc...it probably would do better with dual exhaust, more carb and 3.9 rear gears, but it is still fun as is. Willie _________________________ 55 Centurys 63; 63; 66C People who use tools bleed a lot! Keep your mouth open so it doesn't hit you in the face! BuickRestorer
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#486338 - 02/10/08 09:19 PM Re: 322 performance mods? [Re: old-tank]
Bill Stoneberg Bill Stoneberg Member Registered: 03/11/00 Posts: 2421 Loc: Austin, Texas	Willie is being modest once again. His Century convertible that he has "tweaked" runs like a scalded dog. I have had the pleasure of riding in it while watching Willie put in L and then shifting at around 60 or so. I have also driven it and I can see why he likes to drive this car. It just flat out goes. I wish it wasn't so durned pretty so he would drive it more often... _________________________ Bill 1950 Buick Super Estate Wagon 1947 4 Door Sedan 1964 Riviera
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#486666 - 02/12/08 04:50 AM Re: 322 performance mods? [Re: Bill Stoneberg]
downunder pat downunder pat Member Registered: 12/26/07 Posts: 20	Thank guys for your replys this gives me a better idea of what the end result would be.Willies convertible that sounds nice. Patrick Maiden BCAu 991 nsw
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