Hotcam spring install question
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 3,444
Likes: 0
Hotcam spring install question
The LT4 hotcam kit came with valve shims. I assume you use them.
The documentation talks about the differences between pre88 heads and post88 heads. But it doesn't seem to say what you should do differently between the two. I have a 92 LT1.
Anyway, do I use the shims or leave them out on a 92 Lt1? Seems like the shim goes on the bottom of the spring as the retainer doesn't mate with it.
Thanks
Jay
The documentation talks about the differences between pre88 heads and post88 heads. But it doesn't seem to say what you should do differently between the two. I have a 92 LT1.
Anyway, do I use the shims or leave them out on a 92 Lt1? Seems like the shim goes on the bottom of the spring as the retainer doesn't mate with it.
Thanks
Jay
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Re: Hotcam spring install question (Jay Axson)
Sounds like this item does indeed go beneath the spring-probably more to protect the aluminum head from the moving valve spring. My LT4 heads were this way as well.
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 3,444
Likes: 0
Re: Hotcam spring install question (STL94LT1)
I was hoping the shim issue would be self-evident once I took the valve covers off. I have everything else tore down, intake, timing chain cover, but had left the covers on for the moment.
I just ordered the Cloyes roller chain for overnight delivery from Summit. After reading the hotcam instructions and it did indicate that the stock chain would not hold up with the higher RPM you can get with the roller rockers.
Cloyes was recommended quite a bit, but I never read that it was a must. I almost replaced with just the stock chain. I'm glad I'm taking it slow.
Anywhay thanks! I feel better now I won't be surprised with the shims.
Jay
[Modified by Jay Axson, 11:03 PM 6/5/2002]
I just ordered the Cloyes roller chain for overnight delivery from Summit. After reading the hotcam instructions and it did indicate that the stock chain would not hold up with the higher RPM you can get with the roller rockers.
Cloyes was recommended quite a bit, but I never read that it was a must. I almost replaced with just the stock chain. I'm glad I'm taking it slow.
Anywhay thanks! I feel better now I won't be surprised with the shims.
Jay
[Modified by Jay Axson, 11:03 PM 6/5/2002]
Racer
Joined: Sep 2001
Posts: 314
Likes: 0
From: Forest Hill MD
Re: Hotcam spring install question (Jay Axson)
Jay, can you post the part number of the kit or part numbers of the parts included in the kit for this mod? I'm interested in installing the same. Good luck and keep us posted on how it turns out and how it performs.
Thanks,
Jim :flag
Thanks,
Jim :flag
Racer
Joined: Mar 2002
Posts: 498
Likes: 21
From: Maine
Re: Hotcam spring install question (Jay Axson)
I used the shims from the kit. They looked a little thinner than the stock ones. I wanted the correct installed spring height to be correct. The order of installation is shim, valve guid seal, spring, retainer, and then the locks. Hope this helps.
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 3,444
Likes: 0
Re: Hotcam spring install question (jims_red_94LT1)
Jim,
Best price for the kit ($475) is from taylor buick http://www.davidtaylor.com/ver3/parts/parts-contact.htm
You have to call them. When I called last week they were back ordered.
I spent $510 at Pace Pontiac http://www.paceparts.com/product.asp?0=243&1=250&3=791 because they had it in stock.
You can't go wrong with Jeff Kopp (18CarFan on the forum) at Superior Chevy. I don't recall what his price was as I spoke to him last year about it.
But the cost of the cam kit is just the begining. Add in a new Mezier electric waterpump, opti, wires, cloyes timing chain kit, and gaskets, it adds up real fast. I bet I am into it for $1200-$1300 bucks. *edit* I almost forgot the $350 for the chip! My wife is going to kill me :)
I hope it's worth it!
[Modified by Jay Axson, 6:56 PM 6/6/2002]
Best price for the kit ($475) is from taylor buick http://www.davidtaylor.com/ver3/parts/parts-contact.htm
You have to call them. When I called last week they were back ordered.
I spent $510 at Pace Pontiac http://www.paceparts.com/product.asp?0=243&1=250&3=791 because they had it in stock.
You can't go wrong with Jeff Kopp (18CarFan on the forum) at Superior Chevy. I don't recall what his price was as I spoke to him last year about it.
But the cost of the cam kit is just the begining. Add in a new Mezier electric waterpump, opti, wires, cloyes timing chain kit, and gaskets, it adds up real fast. I bet I am into it for $1200-$1300 bucks. *edit* I almost forgot the $350 for the chip! My wife is going to kill me :)
I hope it's worth it!
[Modified by Jay Axson, 6:56 PM 6/6/2002]
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Racer
Joined: Sep 2001
Posts: 314
Likes: 0
From: Forest Hill MD
Re: Hotcam spring install question (Jay Axson)
My vette has close to 40K on the clock, I'm so ready to do some serious mods. I'm really ready to pull the heads off an go with some really hot ones along with a cam an porting & polishing the intake and of course a 52mm TB & headers. Thanks for the info. HHUUUUMMMM lots to mull over. Good luck with your mods, keep us posted on the outcome.
Remember nothing good come easy, there is always a price to pay!!! Hope your wife recovers soon though.
Jim :flag
Remember nothing good come easy, there is always a price to pay!!! Hope your wife recovers soon though.
Jim :flag