What else can go wrong?
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
What else can go wrong?
Installed my custom cam flawlessly. Installed the Total Seal rings on the TRW forged piston flawlessly and popped 'em in the block without a problem arising. Now while doing the timing set I noticed a small problem: The cam is hitting the GM 4340 rod. I had the cam custom ground per recommendations from my local speed shop and Mr. Crower. I can't believe this is happening! :sad:
[Modified by GRX, 5:16 PM 5/30/2003]
[Modified by GRX, 5:16 PM 5/30/2003]
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Re: What else can go wrong? (redvetracr)
GRX,
Are you building a "stroker"?? And did you order a "small base circle" camshaft?? ...redvetracr
Are you building a "stroker"?? And did you order a "small base circle" camshaft?? ...redvetracr
[Modified by GRX, 5:38 PM 5/30/2003]
Race Director
Joined: Jan 2000
Posts: 13,015
Likes: 2,258
From: Corsicana, Tx
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Re: What else can go wrong? (GRX)
Hey, I would consider this a WIN!! You found it before you hit the starter..that's GOOD!!!
Just take a deep breath and fire up the grinder!
I gotta admit, that is strange with a cam that small and no stroker crank. Must be a huge rod!
JIM
Just take a deep breath and fire up the grinder!
I gotta admit, that is strange with a cam that small and no stroker crank. Must be a huge rod!
JIM
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Re: What else can go wrong? (427Hotrod)
427Hotrod, yeah everything was going sooo smoothly. While installing the timing set (crankshaft keys; sprockets etc....), went to turn the camshaft...OOooops! Darn thing would only turn about 270*!!! Then I uttered some faul language and got a chair to sit in. I couldn't believe it. The GM specs (and the expert GM parts manager) indicated nothing relating to an interference between cam and rod. Oh well, live and learn. :banghead: ______Yes, its a GM bowtie 4340 rod with 7/16 bolts into the rod______
[Modified by GRX, 11:56 AM 6/1/2003]
[Modified by GRX, 11:56 AM 6/1/2003]
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Re: What else can go wrong? (427Hotrod)
Hey, I would consider this a WIN!! You found it before you hit the starter..that's GOOD!!!
Just take a deep breath and fire up the grinder!
I gotta admit, that is strange with a cam that small and no stroker crank. Must be a huge rod!
JIM
Just take a deep breath and fire up the grinder!
I gotta admit, that is strange with a cam that small and no stroker crank. Must be a huge rod!
JIM
[Modified by GRX, 11:57 AM 6/1/2003]
Burning Brakes
Joined: Oct 2001
Posts: 1,033
Likes: 0
From: Tracy California
St. Jude Donor '05
Re: What else can go wrong? (GRX)
Just a thought GRX. Are you sure you had the cam lined up correctly? I've cleared some really nasty cams compared to yours. Stroker cranks require a little effort if you're not using rods like (most H-beams).
.209/.217 @.050 doesn't strike me as something you could have problems with. But then again this is just my opinion! Lets us know what you find out.
KM
.209/.217 @.050 doesn't strike me as something you could have problems with. But then again this is just my opinion! Lets us know what you find out.
KM
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Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Re: What else can go wrong? (88-406)
Kelvin,
The GM Performance book states these rods are supposed to clear a non-stroker situation, such as mine. So you may have a point. I never set the timing chain up and then turned the motor. I just turned the the cam to simply check thye rotation, and boom...it hit the crank. I'll check then, as you suggested, by setting up with the timing chain and then rotating. TIA
The GM Performance book states these rods are supposed to clear a non-stroker situation, such as mine. So you may have a point. I never set the timing chain up and then turned the motor. I just turned the the cam to simply check thye rotation, and boom...it hit the crank. I'll check then, as you suggested, by setting up with the timing chain and then rotating. TIA
Drifting
Joined: Feb 2003
Posts: 1,677
Likes: 0
From: Lurkus Maximus
Re: What else can go wrong? (GRX)
If everything else is fine, I'd either get a small base circle cam or have the cam you've got re ground for clearance. Why mess with the rods if they'll have to be pulled ground and rebalanced? Cam change would be easier.
But that's just my 2 cents.
But that's just my 2 cents.