Is a must when doing a head/cam swap to change oil pump/timing chain
07-31-2008, 04:33 PM
#1
Staging Lane
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Is a must when doing a head/cam swap to change oil pump/timing chain I'm doing a head and cam swap on my 99 Corvette FRC. I'm purchasing PRC 5.3L Stage 2.5 ported heads and Texas Speed 220/220 Camshaft. Should I change my timing chain and oil pump. I only have 85,000km (53,000 miles) on my car. Both the pump and chain are in perfect working order. I don't want to replace something that's not broken unless I have to.
07-31-2008, 04:57 PM
#2
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whats the recommended change for a timing chain, 75K? change it. cheap insurance. oil pressure is vital too. i got a melling 295 pump from the local auto parts place for 100 bucks and an ls2 chain can be had for under fourty.
07-31-2008, 05:06 PM
#4
I would, my buddy has a 2000 and never had a problem we took it to the dyno just for fun and as we backed it on the rollers the oil pump went out. I would get a ls6 pump at least. TSP has ported ls6 pumps for cheap. They also sell a LS2 timming chain for like $35.
07-31-2008, 05:10 PM
#5
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Most do it so they dont have to come back in a 2nd time to do it. I have 155K mi on mine so doing new lifters,oil pump.chain when I swap H/C. I got the same heads you got with a 222/222 566 112 cam. If there still good then reuse them some times better to not risk it and just get new. better save than sorry.
07-31-2008, 05:49 PM
#7
You really should at least change your chain, you'll be surprised to see how much slack is in it compared to a new one. You can get a chain for $40 and you will have the pump off anyways and you can get a pump for 90-100, why not?
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07-31-2008, 07:34 PM
#10
08-01-2008, 03:54 AM
#12
Since your going to be in their anyway,why not just replace them to be safe.That's what I did.Melling 295 oil pump and ls2 chain.Just do it,it's worth the piece of mind.
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08-01-2008, 04:16 AM
#13
I didn't....I guess I like taking chances also. I wasn't too concerned....the way I look at it is if I never changed the cam, the chain and pump never would have been changed either. There are so many high-mileage LS1's out there that have never had problems. It was a risk that I have no problem taking. If I ever upgrade cams, I will change them out.
