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If the heads were replaced on your car recently should the valves be bent?
Wiki User
∙ 15y ago
No they should not be bent.If your timing belt (or chain) was not installed correctly,(valve train out of time)this will cause bent valves,as they can hit the pistons.A major overheat can also bend valves.
Wiki User
∙ 15y ago
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Are the valves in a 5.7 350 vortec in the heads?
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Can you use unleaded gas on pre 1970 cars?
You would not want to for very long. The lead acted as a cushioning lubricant for the valves. You should update the valves & valve seats in the heads. Best to contact your local automotive machine shop for this job, just take your old heads into them.
What is is the cc's and valve size for gm heads 10147898?
I have the same heads and from the info I found they 76cc heads with 1.72 intake valves
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What causes a head gasket to be replaced if heads are not cracked on a 2000 Isuzu amigo?
if my heads are warped and gasket needs replacing what longterm damages and repairs should i expect
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Mounted in the heads.
What causes a 2E tazz to bend the head valves?
the pistons most likely have zero clearance in the between the piston heads and the valves. When the timing goes out on a vehicle with zero clearance, the piston heads hit the valve heads, thereby bending the valve stems.
Do the 305 vortec and 350 vortec have the same heads?
No. The 350 has bigger valves. While you CAN put the 305 heads on the 350, (I can't imagine why you would actually want to) you can NOT put the 350 heads on the 305. Because of the 305's small bore, the valves on the 350 heads will hit the cylinder block.
How do identify the intake and exhaust valves with the heads on the car?
Trace the runners. You can see the exhaust runners leading to the exhaust valves, and the intake runners leading to the intake valves.
Can you swap 340 heads for 360s?
Yes, but the valves would be 1.88/1.60 and they would have less flow. You could use 318/340/360 heads on any LA small block. The only problems would be compression due to bigger combustion chambers in 340/360 heads than in 318 heads. Do a valves job and resurface the 340 heads. In 1971, the 340 came with the J heads and 2.02/1.60 valves. Since 1971 saw the introduction of the "360 style" J head, they used the same casting for 1971 340s and 360s, with different machining for the different sized valves. The 360 head actually saw first limited use in the 1970 340 Six-Pack AAR/TA, which also had 2.20/1.60 machined heads. Also the "J" heads can be machined for the big valves.
Will 305 heads make more horsepower on a 350 1990ish motor with carb conversion?
No. 305's have small valves due to the 305's small bore. Large valve heads can't be used on the 305 because the valves will hit the cylinder block. 350 heads breathe MUCH better than 305 heads. Stick with the 350 heads.
