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| LS4 / F40 swap - fieroguru (Page 38/216) |
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fieroguru
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NOV 22, 03:11 PM
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| quote | Originally posted by kennn:
Guru,
Is the balancer on the LS4 also a ribbed pulley? I'm curious to know if it would fit on an SBC small block to shorten the front end accessory stack.
Ken
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Yes, the LS4 is a ribbed pulley. No it will not fit on the SBC - crankshaft bore and seal surface are different diameters. What you need is a balancer from an 89+ FWD 2.5L. It is a 6 rib balancer/pulley and is a direct swap to a SBC (unless you are using the vortec plastic engine cover or a taller gear drive). Left is a V8 archie balancer, middle is the 89+ FWD 2.5, and right is 3.1L FWD balancer:
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kennn
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NOV 23, 09:38 PM
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Thanks for your response, Guru. I do have a small curiosity: Will a harmonic balancer for a four cylinder suffice for the small block v8? I am aware that the imbalance of the v8 is taken out with the flywheel. So it's then my understanding that the harmonic balancer does not technically "balance." So does it merely cancel the harmonics of the motor?
Ken------------------
'88 Formula V6
'88 GT TPI V8
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fieroguru
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NOV 24, 09:58 AM
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| quote | Originally posted by kennn:
Thanks for your response, Guru. I do have a small curiosity: Will a harmonic balancer for a four cylinder suffice for the small block v8? I am aware that the imbalance of the v8 is taken out with the flywheel. So it's then my understanding that the harmonic balancer does not technically "balance." So does it merely cancel the harmonics of the motor?
Ken
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The harmonic balancer is mostly to calm crankshaft harmonics vs. having anything to do with the actual rotating balance of the crankshaft assembly (at least when speaking of SBC's except the 400 - which did have a weight on the balancer). The ring mass on the 2.5 balancer is very similar to that of the Archie V-belt balancer (which was from the chevy inline 6).
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fieroguru
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NOV 24, 09:59 AM
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13" brake rotor backets are done:
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ricreatr
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NOV 25, 11:42 AM
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| quote | Originally posted by fieroguru:
Getting the coolant outlet out of the way, frees up room to run a water pump setup similar to the one I ran on my SBC (probably will need to go further forward to clear the wheel well, but you get the picture):
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guru, i recently did this on my 3800 project, but i exited the coolant from the back of the heads. i think it provides better flow across the whole engine. (in the front, out the back)
it is not done now, but you can see the freeze plugs have a teardrop shape around them with a bolt hole at the small end of the tear drop. i cut that shape from an inch thick piece of aluminum. the one bolt holds the block against the (empty) freeze plug hole and seals. i tapped 1/2 pipe thread into the aluminum block and screwed in a 3/4 nipple. is working great. i did a similar thing on a big block olds in a boat years ago. i like it.
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Syn
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DEC 01, 12:26 PM
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been about a week any progress?
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fieroguru
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DEC 01, 12:47 PM
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| quote | Originally posted by Syn:
been about a week any progress? |
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Focused on finishing the 13" rotor upgrade kit. It ships to my tester on Friday.
 [This message has been edited by fieroguru (edited 12-01-2011).]
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kennn
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DEC 02, 10:32 AM
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Beautiful work; Lovely presentation; Very interested.
Ken------------------
'88 Formula V6
'88 GT TPI V8
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blackrams
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DEC 07, 05:53 AM
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Bump for any updates. ------------------
Ron
The key thing is to wake up breathing! All the rest can be fixed. (Except Stupid - You can't fix that)
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blackrams
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DEC 13, 08:58 PM
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Enjoy the break. 