brake in tips
Thread Starter
Junior Member
Joined: Oct 2001
Posts: 3
Likes: 0
brake in tips
hello all I am rebuilding my 305 and have a question. all the books i have read say all kinds of things abiut how to brake it in. how long do i drive it befor the first oil change? some i have read say 50 miles others say 500. I know i am not sapost to baby or run the hell out of it at first. but how long before i can run it like the cam and intake was designed to do? any help would be great! oh one other thing. any quick porting tips to give? something easy and fast to do.
thanks,
mike
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two 1984 berlanettas, one parts,one daily driver. 305, torquer 2 intake 1 inch spacer,1407 carb b&m shift kit, 3:08 open rear end(going to 3:42 soon) 145k on orginal engine and trans(sister inlaws car first)
thanks,
mike
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two 1984 berlanettas, one parts,one daily driver. 305, torquer 2 intake 1 inch spacer,1407 carb b&m shift kit, 3:08 open rear end(going to 3:42 soon) 145k on orginal engine and trans(sister inlaws car first)
Supreme Member
Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I was told to change the oil after 100 miles or so. I think I waited 200. I babied the motor for the first 500 miles.
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"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite
------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite
Joined: Apr 2000
Posts: 1,536
Likes: 322
From: South Windsor, CT
Car: '89 GTA
Engine: ZZ6TPI
Transmission: T56
Axle/Gears: Borg Warner 3.70:1
When you first start it, set the timing, and run it at 2000rpm for 45 min to break the cam in. Monitor the coolant temperature and add if needed. Change the oil. Adjust the idle and drive for 500 miles. Don't beat on it, but don't baby it either. Vary the rpm's to seat the rings and expose the engine to various loads and speeds. In general, drive easier at first, and by 500 miles, you should be driving it like you would normally. Change the oil again and that's it. You can use synthetic oil after the first 500 miles or anytime after that. Change your oil at regular intervals and keep everything in tune. Don't beat on it and it will last a very long time. Good luck.
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89 Transam GTA, 350TPI, auto, 3.27 rear, dual cats, gray.
Magnaflow cat-back,
K&N open element,
Best E.T. 14.63@95mph
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89 Transam GTA, 350TPI, auto, 3.27 rear, dual cats, gray.
Magnaflow cat-back,
K&N open element,
Best E.T. 14.63@95mph
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