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grizzly hop up

This is a discussion on grizzly hop up within the Grizzly Engine & Transmission forums, part of the Grizzly Forums category; thinking about putting raptor a top end on my 660 grizzly smart or not? MOVED THREAD TO ENGINES & TRANSMISSION...


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#1
03-24-2011, 10:49 PM
Exclamation grizzly hop up

thinking about putting raptor a top end on my 660 grizzly smart or not?







MOVED THREAD TO ENGINES & TRANSMISSION

Last edited by desertdweller; 03-24-2011 at 10:58 PM.. Reason: BETTER RESPONCE FROM MEMBERS
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#2
03-24-2011, 11:22 PM
I havnt tried it or heard anybody doing it but if it fits then yea it would be better.
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#3
03-25-2011, 12:12 AM
What all you going to put on?
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#4
03-25-2011, 01:16 AM
complete top end and intake
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#5
03-25-2011, 01:17 AM
thanks for putting thread in right place
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#6
03-25-2011, 01:20 AM
nice quad grizzlymud .what kind of clutch work and did you lift it
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#7
03-25-2011, 01:21 PM
Thanks, yea has a 2" lift, some clutch work done but still working on getting it right with the new motor. Oh and i know the head is different on the 700's Grizz to Raptor. Not sure about the 660.
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#8
03-25-2011, 06:26 PM
i guess i forgot to put im doing it to my 660 and leaving my 700 stock
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#9
03-26-2011, 12:21 AM
It wont work. IIRC the grizz 660 is a 4 valve unit, the raptor is a 5 valve. So you would need to have an entire head, complete with cam etc, and hope the chain is correct. Also IIRC the grizz has straight exhaust, where the raptor has angled exhaust flanges. So to do it, you would need to mod your exhaust, or somehow make a raptor header work. This would also kill quiet a bit of your bottom end, since the raptor is aimed more at the top end, since you can use the clutch. So the cam might be a bit agressive. Though I dont know that for sure.
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#10
03-26-2011, 12:45 AM
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Originally Posted by StupidNewbie View Post
It wont work. IIRC the grizz 660 is a 4 valve unit, the raptor is a 5 valve. So you would need to have an entire head, complete with cam etc, and hope the chain is correct. Also IIRC the grizz has straight exhaust, where the raptor has angled exhaust flanges. So to do it, you would need to mod your exhaust, or somehow make a raptor header work. This would also kill quiet a bit of your bottom end, since the raptor is aimed more at the top end, since you can use the clutch. So the cam might be a bit agressive. Though I dont know that for sure.
Grizzly 660 is a 5 valve head, alot of people use raptor cams in their grizzly's for a performance mod


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#11
03-26-2011, 01:18 AM
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Originally Posted by vegajf51 View Post
Grizzly 660 is a 5 valve head, alot of people use raptor cams in their grizzly's for a performance mod


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i just put a stage 2 Raptor hotcam and raptor valve springs in my 660 grizzly. Everything fit and runs great.
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#12
03-26-2011, 11:39 PM
i talk to a mechanic that did it since then and he told me you have to use part of the exhaust and the complete head. i didnt talk to him about the chain i guess we will cross that bridge when it comes.
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