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Gear Drive VS Belt Drive #900277
01/09/11 03:24 PM 01/09/11 03:24 PM
Joined: Jan 2003
Posts: 2,533
Alexandria, LA
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Blucuda413 Offline OP
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Building a 528 14-71 blown hemi. Which is best to use in this situation a gear or belt drive?? I've had very good service out of gear drives in my swmallblocks. Hemi will not be a street engine but will not be max'd out either.
Re: Gear Drive VS Belt Drive [Re: Blucuda413] #900278
01/09/11 03:28 PM 01/09/11 03:28 PM
Joined: Nov 2009
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St. Paul , Mn.
tubtar Offline
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Sounds suspiciously like a TA/D arrangement.
What do they like ?
I am no authority , but think the gear makes more sense based the layout.
Chucking the big belt could make things worse with an open belt drive and I am not aware of a closed one for a Hemi.
Re: Gear Drive VS Belt Drive [Re: Blucuda413] #900279
01/09/11 03:38 PM 01/09/11 03:38 PM
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk ! Offline
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A gear drive will transmit harmonics UP TO the valve train ....a belt will not.

If $$$ are not an issue ..I would go with a belt.
Re: Gear Drive VS Belt Drive [Re: dOrk !] #900280
01/09/11 04:07 PM 01/09/11 04:07 PM
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Winnipeg ,Mb. CA.
chryco Offline
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Belts break/stretch.... gears don`t .

Rock ....Paper ....Scissors .......................

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Last edited by chryco; 01/09/11 04:09 PM.
Gas is fer washin' parts ....Alky`s fer drinkin' ...Nitro`s fer Racin'!
Re: Gear Drive VS Belt Drive [Re: chryco] #900281
01/09/11 04:30 PM 01/09/11 04:30 PM
Joined: Jun 2007
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Plymouth Meeting, PA
bigtimeauto Offline
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Plymouth Meeting, PA
When i put my blower on i took the cam belt drive off for safety. Blower belts can rip frey or whatever.

BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Gear Drive VS Belt Drive [Re: Blucuda413] #900282
01/09/11 08:21 PM 01/09/11 08:21 PM
Joined: Aug 2003
Posts: 43,129
Bend,OR USA
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Cab_Burge Offline
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Quote:

Building a 528 14-71 blown hemi. Which is best to use in this situation a gear or belt drive?? I've had very good service out of gear drives in my swmallblocks. Hemi will not be a street engine but will not be max'd out either.

I have not heard a 14:71 driven on the street with mufflers so I'm not sure how much noise they will make, probally depends if you underdrive or overdrive it My point is that the gear drives make noise, the blowers make noise and some people, especially the street car people are impress by both visual and audible inputs I have built several blown 426 Street Hemi, ran them on the engine dyno but not in the cars, one was a Motech EFI with a Littlefield stage 3 10:71 499 C.I. all alulmium KB block and the other was another stage 3 Littefield with a set of 1050 CFM Carb Shop blower domiator carbs,484 C.I. new iron mopar 426 block, both surged around 600 RPM hgh to low at idle at first until I tuned the surge out of them I had to tune the surging back into both motors for the owners after the dyno testing

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Gear Drive VS Belt Drive [Re: Cab_Burge] #900283
01/09/11 08:24 PM 01/09/11 08:24 PM
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Alexandria, LA
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Blucuda413 Offline OP
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Cab, it is "NOT" going to be a street engine.
Re: Gear Drive VS Belt Drive [Re: Blucuda413] #900284
01/09/11 08:27 PM 01/09/11 08:27 PM
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Bend,OR USA
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Quote:

Cab, it is "NOT" going to be a street engine.

Oops In that case go with the belt drive I have a Jesel on my 527 bracket motor, it wouldn't be hard to make a thin cover to keep debris out of the belt

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Gear Drive VS Belt Drive [Re: Blucuda413] #900285
01/09/11 08:59 PM 01/09/11 08:59 PM
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk ! Offline
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dOrk !  Offline
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Florida STAYcation
Quote:




Hemi will not be a street engine but will not be max'd out either.



On a milder blower motor ... I would not worry about shredding belts and having that trash get-into a cam belt-drive.
Re: Gear Drive VS Belt Drive [Re: dOrk !] #900286
01/09/11 10:11 PM 01/09/11 10:11 PM
Joined: Oct 2004
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Left Coast
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BobR Offline
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Quote:

Quote:




Hemi will not be a street engine but will not be max'd out either.



On a milder blower motor ... I would not worry about shredding belts and having that trash get-into a cam belt-drive.



Our new BAE motor came with a gear drive so I assume that's what they recommend. I have it in my bedroom. Looks real expensive.
Re: Gear Drive VS Belt Drive [Re: BobR] #900287
01/09/11 10:44 PM 01/09/11 10:44 PM
Joined: Oct 2006
Posts: 247
nc
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moeflo Offline
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I've got an old Engine Masters mag around here somewhere. They tested the chains vs. belts, vs. gear drives. The gear drives were equal, or slightly better on the dyno. With magazine politics, I wouldn't bet the farm. But gear drives seem to be the standard on blown hemis. One less thing to worry about...
Re: Gear Drive VS Belt Drive [Re: BobR] #900288
01/09/11 10:52 PM 01/09/11 10:52 PM
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk ! Offline
The village idiot's idiot
dOrk !  Offline
The village idiot's idiot

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Posts: 30,424
Florida STAYcation
Quote:




Our new BAE motor came with a gear drive so I assume that's what they recommend. I have it in my bedroom. Looks real expensive.



Since I don't have a BAE motor ...and have no plans on it ... I ... to your knowledge of the situation ..

Re: Gear Drive VS Belt Drive [Re: BobR] #900289
01/10/11 01:33 AM 01/10/11 01:33 AM
Joined: Aug 2003
Posts: 43,129
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

Quote:

Quote:




Hemi will not be a street engine but will not be max'd out either.



On a milder blower motor ... I would not worry about shredding belts and having that trash get-into a cam belt-drive.



Our new BAE motor came with a gear drive so I assume that's what they recommend. I have it in my bedroom. Looks real expensive.

Be careful of what you do with that thing in your bedroom I'll tell Doug

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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