I'm the guy that made those adapter plates. The problem with the flat head cap screws not sitting flush in an aluminum head is Edelbrock did not countersink the mounting holes like the factory cast iron heads. The plates are 1/4" thick, the length of the tapered area of the flat heads cap screw is 1/4". The threads do not extend all the way to the tapered part of the fastener, hence the need for a chamfer. This is not an issue with factory cast iron cylinder heads.
@@Extreme_Supreme I think they changed the water pump design. They put a standard flow impeller into a reverse flow housing. Compare a V8 diesel water pump to the new V6 diesel water pump, you'll see the difference.
This is fantastic content. I'm loving this whole video series, especially the serpentine belt. Thank you so much for doing this for the Olds crowd. I can see a fresh Olds455 with serpentine belt in my 1976 GMC Motorhome someday!
Also concerning the clearance issue with the power steering pulley and the power steering gear box. The factory pulleys are just a tad bit bigger than the auto parts store replacements. Something like a 1/4". If you need and/or want extra clearance you can remove the factory bolt on the steering box nearest to the pulley, and replace it with a button head cap screw.
my kit did the same thing, I also had aluminum heads, but still had the cast heads , so I checked , and they tightened up , my fix was to chamfer the bolt holes on the head , fixed it up just like that , the screws need a bit of clearance , and the aluminum heads are milled dead flat, the cast heads have a chamfer, 9/16 bit, and just a touch is all that is needed, then they tightened up perfect.
Wow, I was wondering how you were going to get a Chevy serpentine belt setup on your Olds 455! Cool bracket system Hutch! I recently did a serpentine belt setup video for my sbc 400 on my channel. And you are correct, media blasting those brackets are a pain! I ended up powder coating mine in a gloss black and they look pretty nice. Looking forward to part 2 of this install!
I cut the threads all the way to the bevel of the bolt to see if it helped and it didn't. Didn't think of counter sinking the thread hole. I wouldn't do it to those heads though.
@hutchhiperf As I continued to look at your videos, I came a cross the one with all the part numbers. Wandering if that kit will work with a Buick 455. Thanks again.
Your fix did the trick great job. By the way what is the Howard's cam part # did you use in your build, I have a 1971 442 convertible i am thinking about a roller cam upgrade
@@rickyouthouse9583 The key is matching the other parts to the build. As long as the intake etc. is working within that power band range, you should have good results.
Conversion brackets are here: pacificgbody.com/blogs/shop/oldsmobile-serpentine-conversion This video covers all the parts I will use: ua-cam.com/video/2dO2WK1abRo/v-deo.html
@@hutchhiperf it's either drilled with the wrong bit or the hardware is bottoming out in the head. If the right bit is used, it will snug evenly regardless of how deep the countersink is. Angle of the countersink doesn't change. This might work temporarily but those will loosen up over time.
Right off: please don't be working on the floor, unless absolutely necessary ! Work benches are you, and your knees, friend - far more comfortable and efficient. It is almost painful to watch.
@@hutchhiperf Hi. I believe I messaged you a few months ago regarding your 2004r transmission. I had mine rebuilt thereafter with the transgo shift kit etc. installed. Anywho..Anywhere... I paid over $400 for this same serpentine kit from Pacific GBODY I believe..out of Canada. But can't seem to get my hands on the proper Reverse Rotation Water pump from anywhere. Flowkooler, GMB or otherwise new or used. Would love to have your other part list for this build to compare with mine. Especially the Ford pulleys. I purchased 2 full brackets from the scrap yard. Look different but haven't had time to test fit yet on my Olds 350 yet currently sitting in my '86 442 TT. Nonetheless, appreciate your detail..I'm just trying to sell and replace the 307 olds in my 4Dr with the olds 350 with serpentine and I have the stage 2 LQ9 for my 442. How much to convert my 86 442 tails to digi?
@@robert3mccrorey Check this in a search: US Motor Works US5012, also Summit and Jegs list them www.summitracing.com/parts/umw-us5012 www.jegs.com/i/Derale/259/US5012/10002/-1 They both say "Ships from Manufacturer", so who knows. Digitails are here: digi-tails.com/1981-88-oldsmobile-cutlass-led-sequential-taillight-kit
I'm the guy that made those adapter plates.
The problem with the flat head cap screws not sitting flush in an aluminum head is Edelbrock did not countersink the mounting holes like the factory cast iron heads. The plates are 1/4" thick, the length of the tapered area of the flat heads cap screw is 1/4". The threads do not extend all the way to the tapered part of the fastener, hence the need for a chamfer. This is not an issue with factory cast iron cylinder heads.
Where do you buy the kit from?
The reverse rotation water pump is no longer available. I am not making any more of the adapter plates because of this.@@truckloadslim
@@Extreme_Supreme ok cool. Thanks for the reply.
@@Extreme_Supreme I think they changed the water pump design. They put a standard flow impeller into a reverse flow housing. Compare a V8 diesel water pump to the new V6 diesel water pump, you'll see the difference.
The inlet on a reverse rotation water pump enters below the centerline of the shaft. Do you have part numbers?@@b_hall
This is fantastic content. I'm loving this whole video series, especially the serpentine belt. Thank you so much for doing this for the Olds crowd. I can see a fresh Olds455 with serpentine belt in my 1976 GMC Motorhome someday!
Also concerning the clearance issue with the power steering pulley and the power steering gear box. The factory pulleys are just a tad bit bigger than the auto parts store replacements. Something like a 1/4". If you need and/or want extra clearance you can remove the factory bolt on the steering box nearest to the pulley, and replace it with a button head cap screw.
my kit did the same thing, I also had aluminum heads, but still had the cast heads , so I checked , and they tightened up , my fix was to chamfer the bolt holes on the head , fixed it up just like that , the screws need a bit of clearance , and the aluminum heads are milled dead flat, the cast heads have a chamfer, 9/16 bit, and just a touch is all that is needed, then they tightened up perfect.
Wow, I was wondering how you were going to get a Chevy serpentine belt setup on your Olds 455! Cool bracket system Hutch! I recently did a serpentine belt setup video for my sbc 400 on my channel. And you are correct, media blasting those brackets are a pain! I ended up powder coating mine in a gloss black and they look pretty nice. Looking forward to part 2 of this install!
Lucky for me, someone else did all the heavy lifting. I'm glad someone worked out the parts and brackets.
I installed a hydroboost brake system on my 71 442
Does the bevel on the bolt protrude thru the back of the new mount if it does you could counter sink the thread hole on the head just a little bit
I cut the threads all the way to the bevel of the bolt to see if it helped and it didn't. Didn't think of counter sinking the thread hole. I wouldn't do it to those heads though.
that is what i did and that fixed it , the aluminum head is milled flat , cast head has a chamfer
Hi Hutch, what kind of HP/Torque numbers are you hoping to hit when you are done with the engine? Love your videos!
Based on the flow of the stock Edel Heads and a 10.2:1 compression I would be happy with 490hp/580lbft torque.
What water pump did you use, reverse rotation?
@@scottvanderspool7701 yes
Is it possible to get the part numbers of thr brackets that you got from the junkyard? Great job by the way!
Thank you!! Go here. It gives a run down of New and Used parts and part numbers.
pacificgbody.com/blogs/shop/oldsmobile-serpentine-conversion
@hutchhiperf As I continued to look at your videos, I came a cross the one with all the part numbers. Wandering if that kit will work with a Buick 455. Thanks again.
@@timteamer525 I would bet not. You should try some Buick forums to see what they're doing with serpentine belt conversions.
Your fix did the trick great job. By the way what is the Howard's cam part # did you use in your build, I have a 1971 442 convertible i am thinking about a roller cam upgrade
514825-10
@@hutchhiperf looks like a good choice i was also looking at the 514245-10 a little lower rpm, I known stock bottom end big olds don't like high rpm
@@rickyouthouse9583 The key is matching the other parts to the build. As long as the intake etc. is working within that power band range, you should have good results.
great info!!!
Trying find out who sale the brackets that bolt on block
The company is in the comments of this video: ua-cam.com/video/-cl9hzCOOd0/v-deo.html
Hi where did you get the brackets? Do you have a parts list id love this set up for mine
Conversion brackets are here: pacificgbody.com/blogs/shop/oldsmobile-serpentine-conversion
This video covers all the parts I will use: ua-cam.com/video/2dO2WK1abRo/v-deo.html
@@hutchhiperf thank you very much!
How thick are the assory bracket adapters
Not sure. They're still on the engine with the GM brackets bolted to them.
Is it that the threaded holes in the heads are not deep enough or that it is over countersunk?
I could run a bolt 1/4 inch longer all the way down without issue. It was a deep counter sink I feel.
Will it work on the 350 and 403
No. There's a separate kit for SB. Check with PacificGBody for that.
@@hutchhiperf thanks
What year S10?
GM Serpentine setup from most 4.3l/5.7l motors from 1990-1995.
The hardware can't be longer than 1/2". That's the issue. He might have used the wrong angle counter sink as well but I suspect it's a hardware issue.
The hardware was fine. It was the counter sink I believe.
@@hutchhiperf it's either drilled with the wrong bit or the hardware is bottoming out in the head. If the right bit is used, it will snug evenly regardless of how deep the countersink is. Angle of the countersink doesn't change. This might work temporarily but those will loosen up over time.
@@TerenceSawtellCA as I said, the hardware was fine, no bottoming issues. It was just cut wrong. The shims I made worked out well. I'm not worried.
Cause Larry doesn't have the Right hardware lol
As I said, the hardware was fine.
Right off: please don't be working on the floor, unless absolutely necessary ! Work benches are you, and your knees, friend - far more comfortable and efficient. It is almost painful to watch.
I agree, but filming is just easier to do. I am a work bench guy at my age 😁
@@hutchhiperf Hi. I believe I messaged you a few months ago regarding your 2004r transmission. I had mine rebuilt thereafter with the transgo shift kit etc. installed. Anywho..Anywhere... I paid over $400 for this same serpentine kit from Pacific GBODY I believe..out of Canada. But can't seem to get my hands on the proper Reverse Rotation Water pump from anywhere. Flowkooler, GMB or otherwise new or used. Would love to have your other part list for this build to compare with mine. Especially the Ford pulleys. I purchased 2 full brackets from the scrap yard. Look different but haven't had time to test fit yet on my Olds 350 yet currently sitting in my '86 442 TT. Nonetheless, appreciate your detail..I'm just trying to sell and replace the 307 olds in my 4Dr with the olds 350 with serpentine and I have the stage 2 LQ9 for my 442. How much to convert my 86 442 tails to digi?
@@robert3mccrorey Check this in a search: US Motor Works US5012, also Summit and Jegs list them www.summitracing.com/parts/umw-us5012
www.jegs.com/i/Derale/259/US5012/10002/-1
They both say "Ships from Manufacturer", so who knows.
Digitails are here: digi-tails.com/1981-88-oldsmobile-cutlass-led-sequential-taillight-kit