Boosted Beaumont Build - Page 7 - Chevelle Tech
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post #91 of 101 (permalink) Old Nov 16th, 19, 5:17 AM
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Chris
 
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Re: Boosted Beaumont Build

Quote:
Originally Posted by GoFast Beaumont View Post
Nothing major in the last bit, waiting for parts and went to the Machiniest. Got the heater core seal kit in, lots of wiring to build a new secondary system, and a glove box!

Completed a rebuild on the front shocks as well, these QA1s are looking pretty well used after the last 10yrs. Should be able to get a couple more and then time for replacement.

Got some GM zz572/620 hydraulic roller lifters in, will do a full compare against a set of hydraulic roller Morels.

Machiniest gave me some bad news... no torque plate for 4.500 bores. Says its not common for him so... may have to build him one or take that part of the work to someone else.

Debating if I should splurge on a new wilwood front 6 piston brake kit for the car, any thoughts?
Are you changing over to 17-18" wheels? If you plan to stay 15's, the brake kits out there really don't offer any better performance than stock. You can lose a few lbs though.

1971 Chevelle SS454, T56 Magnum 6 speed, 3.31 Posi

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post #92 of 101 (permalink) Old Nov 17th, 19, 7:39 PM Thread Starter
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Chris
 
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Quote:
Originally Posted by -SS454- View Post
Quote:
Originally Posted by GoFast Beaumont View Post
Nothing major in the last bit, waiting for parts and went to the Machiniest. Got the heater core seal kit in, lots of wiring to build a new secondary system, and a glove box!

Completed a rebuild on the front shocks as well, these QA1’s are looking pretty well used after the last 10yrs. Should be able to get a couple more and then time for replacement.

Got some GM zz572/620 hydraulic roller lifters in, will do a full compare against a set of hydraulic roller Morels.

Machiniest gave me some bad news... no torque plate for 4.500” bores. Says it’s not common for him so... may have to build him one or take that part of the work to someone else.

Debating if I should splurge on a new wilwood front 6 piston brake kit for the car, any thoughts?
Are you changing over to 17-18" wheels? If you plan to stay 15's, the brake kits out there really don't offer any better performance than stock. You can lose a few lbs though.
Keep the 15” wheels, Still really like the look. Yea ditch about 10-15lbs. Hopefully I gain something with there 12.20” rotor and 6 piston kit. Was hoping to up the ante this a lot with the rebuild.

1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
post #93 of 101 (permalink) Old Nov 17th, 19, 9:49 PM
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Chris
 
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Re: Boosted Beaumont Build

Quote:
Originally Posted by GoFast Beaumont View Post
Keep the 15 wheels, Still really like the look. Yea ditch about 10-15lbs. Hopefully I gain something with there 12.20 rotor and 6 piston kit. Was hoping to up the ante this a lot with the rebuild.
If you are keeping the Nascar style 15s, then a 12.19 rotor will likely fit. 6 pistons will gain you nothing in stopping power, only the leverage of the larger rotor. I dropped 8.4 lbs going to aluminum calipers. I have 11.75x1.25 rotors which are a little bit heavier than stock though.

1971 Chevelle SS454, T56 Magnum 6 speed, 3.31 Posi

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post #94 of 101 (permalink) Old Nov 17th, 19, 10:22 PM
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Beth
 
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Re: Boosted Beaumont Build

Quote:
Originally Posted by GoFast Beaumont View Post
Machiniest gave me some bad news... no torque plate for 4.500 bores. Says its not common for him so... may have to build him one or take that part of the work to someone else.
What about this ? If you torque a head bolt in each head bolt hole to full torque, it should distort the cylinder the same as a torque plate.

You need to make sure the bolts penetrate the same depth as normal.

67 Chevelle convertible, 138 vin, original 4 speed, bucket seats, Marina Blue with black interior
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post #95 of 101 (permalink) Old Nov 19th, 19, 12:01 AM Thread Starter
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Chris
 
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Morel VS GM 572/620 lifter

GM p/n is 17120060.... OR HL 121

From my gatherings this is GM heavy duty lifter, mayby someone can correct me on that. It is used on OE 454/496 GM truck applications as well all mercruiser stuff for boats. These maintain stock oil flow to valve train, it is my understanding the 502 version allow more oil to the top end. This would make sense for high rpm heavy duty applications.

There are many similarities between the too. Plunger travel basically the same, GM slightly more by 0.040. Morels at .120 total. Check ball valve slightly larger on morels with the hole which the ball seats is larger. This usually means a higher bleed down rate typically with the additional surface area. The plunger spring on the morels is softer by a lot. Morel is a 2 piece design where GM is a 1 piece. There would be more movement of the parts in Morel bodies. Axles are held in by clips vs pressed like GM. The pushrod piling system is drastically different between the 2. Morel are relying on oil squiring by the body and upper plunger into a relief hole which supplies the pushrod with oil. I am not sure if this is a means of control for oil or not. The GM ones use a disk which site under a rounded rounder head plunger, I would venture to say these really let oil get up top. Morel oiling hole online with roller, GM one is perpendicular to the wheel.

Keep in mind my morels are used but the GM ones you can’t even push the plunger in as it compresses the air in the body. The Morel plunger just collapse’s to the bottom.

Honestly I like the GM ones, id Recommend them. I paid $37US/ea. For the rebuild I will only be replacing 8, I have 12 good morels which will be broken down, cleaned, and reused.

I am thinking they should perform fine given I don’t expect to shift this new combo past 5500rpm. Valve springs will be 155-160 seat pressure, 428lbs/in rate. GM 572/620 crate motor runs 197 seat pressure.

1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
post #96 of 101 (permalink) Old Nov 19th, 19, 12:04 AM Thread Starter
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Chris
 
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Morel hyd lifters
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1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
post #97 of 101 (permalink) Old Nov 19th, 19, 12:05 AM Thread Starter
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Chris
 
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GM 572/620 lifter
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1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
post #98 of 101 (permalink) Old Nov 19th, 19, 1:15 AM Thread Starter
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Chris
 
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Re: Boosted Beaumont Build

Quote:
Originally Posted by nashville beth View Post
What about this ? If you torque a head bolt in each head bolt hole to full torque, it should distort the cylinder the same as a torque plate.

You need to make sure the bolts penetrate the same depth as normal.
the machinist mentioned this as a alternative but said we should really use a torque plate.


As a added benefit of purchasing/fabricating one is that it could be used to set the ring gaps. Some say they see no change while others note almost 9 thou close up on the rings.

1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
post #99 of 101 (permalink) Old Nov 20th, 19, 8:17 PM Thread Starter
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Chris
 
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Re: Boosted Beaumont Build

well I signed up for the 2020 Summit Racing Midwest drag event. Should be a awesome time as usual, this even is the same as drag week or race week. I will need to get this thing put back together and tested before June 1. As usually I plan on driving the car to the event, race it, and drive back.

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1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
post #100 of 101 (permalink) Old Nov 20th, 19, 9:01 PM
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Chris
 
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Location: Kelowna, BC, Canada
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Re: Boosted Beaumont Build

Looks like a fun event. Although for a 'Midwest' event, it seems pretty far East to me. If you can make the 30 hour drive to the first track, I see no reason why you'd have trouble with the 'Drive' part of this 'Drag-N-Drive' event. We had a 'Drag Weekend' event here, quite a bit smaller though. Ours was Thunder Mountain in Kelowna Friday night, Drive to Osoyoos for a Wine Country Racing Association event Saturday, than back to Thunder Mountain for Sunday. Both are 1/8 mile tracks and 150km apart. I didn't find out about it until too late, we were busy that weekend, maybe next year. Always helps motivation when there is a goal with a set date. Good luck!

1969 Beaumont
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post #101 of 101 (permalink) Old Today, 12:05 PM Thread Starter
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Chris
 
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Pretty slow the last couple of weeks. So recently I rebuilt the snout for the hydraulic throw out bearing. This is a slip on style hydraulic throw out bearing. It is made by Howe racing, It has performed really well with no problems. My old snout was a super t10 one I bolted up. The new one is a machined down T56 snout. The reason for the switch was to have a hub centric version for a little more accuracy.
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1968 Beaumont
502 big block
Stock looking, definitely not stock sounding
HP and ET not determined yet!
GoFast Beaumont is online now  
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