Thread: 454 Missing and popping!

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Originally Posted by pat mccarthy

with the gm G body car you need a boot end that you can bend most all boots you want better then 30 angle . what i am say is the water pump has a pilot that the stock steel pulley there was some left to center the fan humb with a ALUM thick pulley you do not have any thing to hold the fan and center on hub . bolts are not made to hold fan center.there is to much mass spining out there for just bolt the water pilot hub need to go in to the fan bass

On the water pump there is a pilot pin, and the pulley has a hole in the center of it also to center it so my bolts arent holding the pulley on by itself!

Originally Posted by 1987BBMonte

On the water pump there is a pilot pin, and the pulley has a hole in the center of it also to center it so my bolts arent holding the pulley on by itself!

NO ...i am not taking about your pulley .i am taking about your fan? hey i do know what i am taking about sorry i can not clarify it better for you but with the thick upper alum pulley you have to pilot the fan hub fan as well with the alum pulleys some are very thick and there is no pilot left to center the FAN HUB .you may or may not have any pilot holding the fan hub center should be check. i have used the alum pulleys there mosty made for just electrical fans. just wanted to give you a heads up seen fans come off .what you want to do is up to you its not my car or one of my customers good luck

yep i said that on post#6 your going to want to check vacuum in gear with your foot on the brake and 1/2 of what you read on vacuum is what you want for a power valve of 4.5 that s how i done it .as for a miss could be fuel low psi or they never fail much i would be using a nother coil just to check the one you have

Originally Posted by pat mccarthy

yep i said that on post#6 your going to want to check vacuum in gear with your foot on the brake and 1/2 of what you read on vacuum is what you want for a power valve of 4.5 that s how i done it .as for a miss could be fuel low psi or they never fail much i would be using a nother coil just to check the one you have

So i checked the power valve and it is a 4.5 and i used another coil, cap, and distributor, and changed the carb. Still the same problem, i took it to a mechanic tonight. Is 125 psi compression good for a big block with flat top pistons?

Originally Posted by 1987BBMonte

So i checked the power valve and it is a 4.5 and i used another coil, cap, and distributor, and changed the carb. Still the same problem, i took it to a mechanic tonight. Is 125 psi compression good for a big block with flat top pistons?

hey man what did u find out what problem was i am having same type of issues.

his last post was 9-1-010 he may have fix it or not .we get a lot of that on here

Another month later. The least he could do is let us know what was wrong or what fixed it. Isn't that part of our purpose here?