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Topic Review (Newest First)
04-11-2012 02:04 PM
twistedaxle
Quote:
Originally Posted by jdsaengine
This is an awfully old thread, just found it today and could not resist the input. I put a 425 olds out of a Delta 88 in my first T bucket. I figured it was much lighter than the 427. Put a Crower cam in it with solid lifters, redid the rocker arms, dual quad manifold with 2 holly's sitting sideways (they wouldn't fit end to end). This pic is from around 1971, my Dad and I
That is one good looking engine.

As far as carbs go, you can fit two Carter AFBs fore-and-aft where you'll never get two Holleys to go. Somebody who deals in superchargers makes a manifold that will allow you to put two Holley carbs on top of a Jimmy blower. The name of the manufacturer escapes me at the moment; it looked like a big "Y."

Is it a problem to run Holley carbs when they're sitting sideways?
04-11-2012 01:56 PM
bullheimer WOW! paint that t bucket blue with a spray can, make the olds a hemi instead, grow your hair about six more inches and add some sacks of chicken food in the back ground and it's ME IN 73!!!

oh yeah, see martinsrs posts on the 425, you should get it just in case an SR-71 comes up for auction!
04-11-2012 12:36 PM
twistedaxle
Quote:
Originally Posted by techinspector1
... the tetraethyl lead coated the valve and seat and acted as a dirtying agent, preventing welding at the valve/seat interface. Cool beans, Huh?
"Dirtying" is undoubtedly the operative word. The lead doesn't burn. So it coats everything it comes into contact with in the exhaust. Great for exhaust valves which lead hard lives. Not so great for catalytic converters, which also may lead equally hard lives but I have a difficult time forcing myself to care.
04-10-2012 04:03 PM
jdsaengine This is an awfully old thread, just found it today and could not resist the input. I put a 425 olds out of a Delta 88 in my first T bucket. I figured it was much lighter than the 427. Put a Crower cam in it with solid lifters, redid the rocker arms, dual quad manifold with 2 holly's sitting sideways (they wouldn't fit end to end). This pic is from around 1971, my Dad and I
04-07-2012 03:45 PM
helmandoo If any of you out there are looking for ****************

Classified ads not allowed in forums, post it in the free classifieds.
02-13-2012 10:08 PM
gas_guzzler I found the articles interesting, thanks for sharing Tech. Wish we could get running big block cars for $400 in New Zealand!
02-13-2012 02:06 PM
techinspector1
Quote:
Originally Posted by FmrStrtracer
No one from Joe Mondello's family has anything to do with the operation of Mondello Performance Products, the current owner has a very poor customer service track record. Most of the article postings are well over 20 years old.

Bernard Mondello runs Bernard Mondello Racing Enterprise(for over 20 years), and has never been involved in the operation of MPP.

Joe's Technical school in Tennesse is still owned by the Mondello family, and they have brought in a very skilled automotive machinist to continue to run the school as Joe would have wanted. Again, they have nothing to do with MPP, or how it is currently operated.

There are a number of other Oldsmobile related shops around the country, with far better parts and customer service, for those wanting to run Oldsmobile engines.
Thank you for the correction.
The articles may be 20 years old, but that doesn't mean that they have no value to someone who is new to Oldsmobile motors.
02-13-2012 01:50 PM
FmrStrtracer
Quote:
Originally Posted by techinspector1
Some of you fellows may be able to pick up a few pointers by reading through these articles. Joe Mondello was one of the premier Olds afficionados until his recent passing, but it is my understanding that his son, Bernard has taken the reins and is continuing the business.
http://www.mondellotwister.com/articles.html

No one from Joe Mondello's family has anything to do with the operation of Mondello Performance Products, the current owner has a very poor customer service track record. Most of the article postings are well over 20 years old.

Bernard Mondello runs Bernard Mondello Racing Enterprise(for over 20 years), and has never been involved in the operation of MPP.

Joe's Technical school in Tennesse is still owned by the Mondello family, and they have brought in a very skilled automotive machinist to continue to run the school as Joe would have wanted. Again, they have nothing to do with MPP, or how it is currently operated.

There are a number of other Oldsmobile related shops around the country, with far better parts and customer service, for those wanting to run Oldsmobile engines.
02-13-2012 12:14 PM
techinspector1 You fellows should remember though, that before about 1972, we had tetraethyl lead in our fuel that would work with the valve seats of the day. If you resurrect one of these motors today, you must cut and install hard exhaust seats to prevent recession of the valve down into the head.

Now, I know that a few fellows will come on and tell us how they have been runnin' unleaded gas on early heads with no problem. BULL HOCKEY!!!! If you're gonna run pre-'72 heads with unleaded fuel, you're asking for trouble if you don't install hard seats.

Some of you fellows may be able to pick up a few pointers by reading through these articles. Joe Mondello was one of the premier Olds afficionados until his recent passing, but it is my understanding that his son, Bernard has taken the reins and is continuing the business.
http://www.mondellotwister.com/articles.html

A friend of mine, Bob Parmenter, schooled me on the valve recession nightmare and why tetraethyl lead worked. It seems that without lead, every time the valve closes, it micro-welds a tiny little bit of the valve to the seat. Next time the valve opens, it rips off the tiny bit of seat that was welded to the valve. After doing this enough times, you can see that the valve would work its way down into the head. Now, in the same way that you cannot weld a dirty connection, the tetraethyl lead coated the valve and seat and acted as a dirtying agent, preventing welding at the valve/seat interface. Cool beans, Huh?
02-13-2012 12:02 PM
327NUT darmyman....I see you're new but always check the dates on these posts, this one is getting close to 8 yrs. old
02-13-2012 07:29 AM
darmyman
425 Olds

Na, not worth a thing, piece of junk, wouldn't waste your time. What junk yard did you say that was at?
06-17-2004 03:31 PM
Super Streeter If it runs good,tear it down to a shortblock,add a fresh oil pump,a mild jet boat type cam and timing chain.Have the heads freshened with new springs and seals,and a 3 angle valve job,top it off with a torker intake a 1" carb spacer and a 750 double pump and add a perfromance curved HEI distributor and you will have a 10:1 compression pump gas motor that will make an honest 480hp,and will be very mild to drive.
Such and engine would work with power brakes and would idle OK with air conditioning,and with 3.73 gears and a 2500 stall convertor it will put a 3500# car into the 12's.Add a 125 shot to it and run 11's.My pick for a car would be an early 80's cutlass.I know of a junkyard in Jersey right now hat has an 84 442 wth an 8.5" rear and 3.73's and a blown tranny for $1200.The body is fair,and the interior is a rat but it would fly with a 425 in it.Good luck.

BTW,a baumont was a spin off of the 98 wile a delmont was the upscale 88.And any 425 Olds will have a th400 bolted to the back of it too.I say that if you dont own a car or an engine,this is a great place to start.
06-17-2004 12:58 PM
killerformula Olds motors are great, and with that many cubes, you'll have an awesome street-torquer. Olds are very under-rated engines.

K
06-17-2004 12:19 PM
Ghetto Jet The cranks are forged and yes you should buy it.
06-17-2004 10:22 AM
gpeak BUY IT!! You will be glad you did. You can drop that thing in your car or truck with it bone stock and be satisfied.
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