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Serpentine belt conversion for 454
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Has anyone done a serpentine belt conversion?

Chevrolet makes all the parts needed. https://www.summitracing.com/parts/nal-19417728
We would have to confirm that the PS pump is up to the task of working a hydroboost system.

Kwikperf makes adapter brackets to mount small block serpentine systems on a big block engine.
http://www.kwikperf.com/bbc_serp_kit.html
The sourcing of the other parts is up to the buyer.

Neither supports the use of the smog pump. I am in Massachusetts I seem to be under the impression that I am required to have those, as they were original equipment, and there are emissions and inspection rules. I will need to confirm this.

I have seen a picture of a serpentine setup on a 1990 Suburban with a 454, and it had a smog pump.

I have the parts off the front of my engine now. The "maintainability" of the 4 belt system on the 1986 engine leaves something to be desired.

Matt


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust
 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
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Posts: 2953 | Location: Nova Scotia | Member Since: 12-08-2006Reply With QuoteReport This Post
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Ok....I tried and never came up with a good solution other than a complete junk yard set up off a newer engine. Then if you find one, you will also need to get a reverse direction water pump. I ended up with a Gilmer belt system and completely discarded the two AIR pumps on my 81 engine set up. I would not use a serpentine set up that does not include an idler. The power steering pump will probably keep a v-belt.
Good luck!!


25 Ft Glassnose, 2792, 1982
454 Engine
Plain Jane Interior
Original Paint
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Posts: 1306 | Location: Clinton Iowa | Member Since: 04-02-2017Reply With QuoteReport This Post
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Duane88, you have some good ideas. On my Barth, what with having everything off the front of the engine, I was going to install a new waterpump anyway.

I found a picture of the serpentine setup on a 1999 Suburban, and it drives everything including an AIR pump. The brakes system on the Suburban was hydroboost. I think that the 3500HD had a pump that would also fit here and might be higher capacity. This setup was used from 1995 to 2000. There is also a variant without the AIR pump.

But you raise a good point, and that is, can we get a second belt on the hydroboost pump, or a v belt there. I don't have a ready answer on that.

When I look at Rockauto.com, I can learn that the 1999 P30 Chassis had a serpentine setup, and the power steering pump used a single serpentine pulley. I don't find evidence of an AIR pump on this. But I take this to mean that Chevrolet designers had "double v belt" confidence in a single serpentine belt, at least as long as proper replacement intervals are managed. The "Heavy Duty" version of the belt is the one to use.

Happy Motoring, and Happy Wrenching,
Matt


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust


Vortec 1999 Belt
 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 12/18
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I used to break V-Belts like crazy less than 100 miles..The Gilmer belt seems to have eliminated that, there is a pulley groove on the crank shaft pulley for a V-belt to the Power steering pump. That belt comes loose a lot and squeaks like a banshee on occasion. but does not seem to break. But no AIR pump anymore, if you can get away without them (it) you will get a good gas savings. The power steering pump and power brake combination is marginal at low speed RPM anyway, even though the new set up has a smaller pulley on the crank, it did not affect the performance of the brakes or steering. The A/C dash system was in the way and did not have much cooling capacity either so it is gone too it was a R-12 system converted to R-134a compressor was probably going soon.


25 Ft Glassnose, 2792, 1982
454 Engine
Plain Jane Interior
Original Paint
Picture by Kevin
 
Posts: 1306 | Location: Clinton Iowa | Member Since: 04-02-2017Reply With QuoteReport This Post
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