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OK, now im ready to continue my quest!

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Old Jul 10, 2003 | 09:53 PM
  #1  
Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
OK, now im ready to continue my quest!

Well, I got my cam in the mail today....yeah yeah! its just an LT1 cam but its out of a 95 F body...so Im wanting to put 1.6 roller rockers on it to give it more lift and duration which is good, right?

My question's are,
can someone point me in the right direction for valve springs kits (cheap) that will drop right into my stock holes,,,I dont want to have to remove my heads to have them machined for bigger valves...I only need about .500 max lift....I think?

Also where can I get some cheap 1.6 roller rockers that will fit under my CBV covers........I dont have alot of money...


and last but not least,
can someone tell me what else I need to buy to get started on my cam removal and install...I have NEVER down this before and dont want to screw it up...

Also, Ive been reading in some of the threads thats installing the CAM is NOT as easy as most say,,,,is it really just basically slide the old out and slide the new in? What about all this im reading about degreeing the cam, getting it on TDC...do I set it on TDC before I remove the old cam?

HELP!!!!!
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Old Jul 10, 2003 | 11:31 PM
  #2  
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Stock heads can only handle about .460 lift so forget about .500 unless you want to take off the heads for valve guide machining. Stick with the 1.5 rockers.
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Old Jul 11, 2003 | 08:36 PM
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
come on guys............anyone?
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Old Jul 11, 2003 | 08:54 PM
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
Comp 981, with the correct retainers and all that.

Put new valve guide seals in while you're there, if you haven't lately.

If you're worried about clearance (shouldn't be a problem but what the heck), use some .050" offset keepers and .050" shims under the springs. You're going to need to use about .100" of shim under the exhausts anyway, once you turf the non-functional and massive "rotator" garbage.

Don't look for "cheeep" anything, unless you like spending money twice and doing the same work twice. Use Comp 1418 roller-tip steel rockers. They fit under stock VCs.

The single biggest issue you'll have is getting the distributor lined up right during re-assembly.
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Old Jul 11, 2003 | 09:16 PM
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From: Philly, PA
Your limitation on lift is not really a fuction of the springs in most stock heads- it's how much room you've got between the bottom of the retainers and the top of the valve guids (plus any seals that sit on top of them). THis is a clearance you should physically MEASURE before you slap on the high ratio rockers. If you need more clearance a set of .050 offset locks is one way to go, (although I haven't used them myself). Your installed height on the new valve springs will be ~.050" too tall with offset locks, requiring a shim under the valve spring of the same height (.050) to insure you have proper valve spring pressure/ proper installed height.

Agreed with RB's suggestions on valve springs. A similar set from Crane would be 99848-16. Almost idetical specs to the Comp Cams set. Perfectly adequate for what you are planning.

Also agreed with RB on the rockers. Stamped steel rockers with the roller tip (in 1.5 or 1.6 ratio) not only clears the valve covers but works just peachy with stock length pushrods. Bolt them on, adjust them and go. Lot easier to install and set up than aluminum full-rollers. Not glamorous, but totally functional. I use them on my blown 383 with AFR heads and stock lenght pushrods.

An in-car cam swap is no easy task. All the front end accessories come off including water pump, drop the pan down (gotta replace the gasket once you break the seal which is a big PITA), timing cover, intake comes off so you can yank the lifters, then reassemble in reverse order after you stab the new cam in. It almost takes longer to do it in the car than it does to yank the motor, in my experience. I did a cam swap on a friend's 87 last summer on the side of the road (literally) and it was no picnic. If you really want to do it I HIGHLY recommend a resuable rubber one-piece oil pan gasket available from Fel Pro and others. Dealing with the multi-piece stock gaskets while laying on your back and trying to shove the oil pan back into place while keepig everyting aligned properly is a real PITA.

Last edited by Damon; Jul 11, 2003 at 09:19 PM.
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Old Jul 11, 2003 | 09:35 PM
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From: Coushatta LA
Be carefull with the .050 offset keepers to gain retainer to seal clearance with self aligning rockers. You may have a problem with the alignment part of the rocker touching the top of the retainer.

I would stick with the 1.5's and use the previously recommended comp springs and retainers.
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Old Jul 11, 2003 | 10:41 PM
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
so just get something like this?


Valve springs:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2423156579

rockers:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2423000927

i can just put these in with some new seals and this would work with no problem?

The max lift on my LT1 cam will only be 490 with the 1.6's

THis is what I want to do....I want to put the new cam in, drop in some new higher lift springs, and some 1.6 roller rockers..is that asking to much? can I do that wthout having to do anything else except the normal stuff when doing a cam swap? or should I just stick with my stock rockers?

but I dont want to have to do all the clearance stuff or anything like that..cause I have no idea what you guys are talkin about...

I want to do it the easiest way possible

Last edited by Wishmaster's87IROC; Jul 11, 2003 at 10:53 PM.
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Old Jul 12, 2003 | 09:21 AM
  #8  
Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
well? will these rockers and springs be ok? will they fit under the center bolt covers?

come on guys, I wanna finish my project
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Old Jul 12, 2003 | 09:47 AM
  #9  
RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
No. Neither one is worth a dime.

The springs are stock springs, same garbage as any other stock springs. Calling them "Z28" springs, or even "Vette springs" (or in true eBay parlance, "springs from a Vette") doesn't improve them. Get springs from a cam mfr., just their basic entry-level spring, with the retainers to go along; the Comp # I gave you, the equivalent from Crane, Lunati, Ultradyne, etc. would be just fine. Avoid K-Motion or any other "spring" vendor that doesn't sell cams; "budget" springs like Summit; and anything from GM.

Same for the rockers. Those are still stamped sheet metal trash. The ones I referred to are investment-cast steel, not stamped sheet metal. They will fit under any stock valve covers I have ever seen.
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Old Jul 12, 2003 | 09:47 PM
  #10  
Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
Originally posted by RB83L69
Comp 981, with the correct retainers and all that.

Put new valve guide seals in while you're there, if you haven't lately.

If you're worried about clearance (shouldn't be a problem but what the heck), use some .050" offset keepers and .050" shims under the springs. You're going to need to use about .100" of shim under the exhausts anyway, once you turf the non-functional and massive "rotator" garbage.

Don't look for "cheeep" anything, unless you like spending money twice and doing the same work twice. Use Comp 1418 roller-tip steel rockers. They fit under stock VCs.

The single biggest issue you'll have is getting the distributor lined up right during re-assembly.








Can you post me a link to these?
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Old Jul 12, 2003 | 09:50 PM
  #11  
RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
http://www.compcams.com/catalog/283.html specs

http://www.compcams.com/catalog/280.html pic
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Old Jul 12, 2003 | 09:58 PM
  #12  
Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
how much are those? they look just like the ones I posted but of cuorse the Comp name on them....what about the valve springs?
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Old Jul 12, 2003 | 10:03 PM
  #13  
RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
The ones you posted were sheet metal. These are something else.

Just go to Summit or Jeg's or Thunder or wherever, everybody carries them. They're a little under $200 or so a set.

Same for the springs.
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