crank spacer preferance question
crank spacer preferance question i need to buy a crank spacer and realized that the gmpp spacer has hols for mounting but the hughes one doesnt. what is the differance and is one better than the other? also can a standarn bolt be used to mount these or do i need the gm bolts
The hughes one goes in to the pilot hole in the back of the crank and extends it out. The GM one either bolts between the crank and the flex plate, or on top of the flex plate, depending on which flex plate you have. Two differant methods to do they same job
almost positive you need the gm bolts because of the extra depth the spacer makes. either that or a arp bolt that is the same length, but I dont know those numbers.
On the spacer question, I've used my gm spacer , flex and bolts for about 2 months now, and everything is great.
On the spacer question, I've used my gm spacer , flex and bolts for about 2 months now, and everything is great.
what trans-some use a .400 spacer bet the crank and flywheel and the flat flywheel, and need long bolts-i have a part # somewhere, or order for a 2004 3500 van w/4l80e
a 350, 400 4l80e, and 700r trans will work with this combo
i think if you have the dished flywheel, and not using a 4l65e, that will work with the hughes spacer bet flywheel & converter, but not 100% sure
a 350, 400 4l80e, and 700r trans will work with this combo
i think if you have the dished flywheel, and not using a 4l65e, that will work with the hughes spacer bet flywheel & converter, but not 100% sure
ok thanks. going to order the hughes spacer. i have a stock dish flex plate. the guy at summit told me that i must use the hughes spacer only with the hughes flexplate. is this true? can i use this with the stock flexplate?
I am running the Hughes spacer with a stock flexplate. The guy at Summit was just trying to sell you more parts.
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TECH Resident
Joined: May 2004
Posts: 792
Likes: 2
From: SoCal
I recently found out that there are two flex plates for LSx motors., A dished version, and a flat version.
Two questions: 1.) What application is the flat version used on, trucks? 2.) If I bolt on the flat version to an LS1 without a spacer, will the flex plate hit the cover plate screws on the back of the block?
I'm considering a special trans adaption where I would need to get the flex plate as close to the block as I can get it without it hitting something.
Thank,
Andy1
Two questions: 1.) What application is the flat version used on, trucks? 2.) If I bolt on the flat version to an LS1 without a spacer, will the flex plate hit the cover plate screws on the back of the block?
I'm considering a special trans adaption where I would need to get the flex plate as close to the block as I can get it without it hitting something.
Thank,
Andy1
TECH Resident
Joined: May 2004
Posts: 792
Likes: 2
From: SoCal
My LS1 is from an '01 Camaro, and it has the dished flexplate.
I can machine a custom starter block if need be. Still wondering whether or not it will not rub on anything?
Andy1
