Pushrod length needed
04-08-2003, 03:52 PM
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Staging Lane
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Pushrod length needed My set up includes 5.3 heads milled .03 and a TR 230/224 cam. I was told the stock pushrod length was fine, but I'm not completely convinced. Any input?
04-08-2003, 05:26 PM
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Re: Pushrod length needed Read the post titled- Low dyno after H/C setup...Some thoughts
I have the GTP heads milled .030 /pig cam, and when we installed them I ordered 7.35's and now we are trying 7.30's.
<small>[ April 08, 2003, 08:10 PM: Message edited by: Formula 1 ]</small>
I have the GTP heads milled .030 /pig cam, and when we installed them I ordered 7.35's and now we are trying 7.30's.
<small>[ April 08, 2003, 08:10 PM: Message edited by: Formula 1 ]</small>
04-09-2003, 06:48 AM
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Re: Pushrod length needed here is somethng that I found usefull:
there is a method to determining lifter preload...
I just did this last week.......
In my comp cam instructions......
If i remeber correctly. put in 2 pushrods...make sure your on the lowest point on the base circle((no lift) i used a dial indicator but you can just make a mark on the pushrod where it sits (no rocker on) use the edge on the head as a guide point. put both rockers on tighten them down to 22 ft lbs. rotate the engine 360 degrees. wait for about 5 minutes and let the lifters bleed down. then unbolt the rocker arms and remove,,,,,the pushrod will then rise..mark again with a marker/pencil/etc in the same location where you marked from before. take pushrod out and measure between the line.....you should only have about .030-.060 if you have more a shorter pushrod is a needed. i did this and came up with .100-.110 so i went with the 7.350's,,,i probably could have went with the 7.300's but would have had to shim,,,alittle
hope it helps..
there is a method to determining lifter preload...
I just did this last week.......
In my comp cam instructions......
If i remeber correctly. put in 2 pushrods...make sure your on the lowest point on the base circle((no lift) i used a dial indicator but you can just make a mark on the pushrod where it sits (no rocker on) use the edge on the head as a guide point. put both rockers on tighten them down to 22 ft lbs. rotate the engine 360 degrees. wait for about 5 minutes and let the lifters bleed down. then unbolt the rocker arms and remove,,,,,the pushrod will then rise..mark again with a marker/pencil/etc in the same location where you marked from before. take pushrod out and measure between the line.....you should only have about .030-.060 if you have more a shorter pushrod is a needed. i did this and came up with .100-.110 so i went with the 7.350's,,,i probably could have went with the 7.300's but would have had to shim,,,alittle
hope it helps..
04-09-2003, 09:02 AM
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Re: Pushrod length needed </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GoFastTurnLeft:
<strong> My set up includes 5.3 heads milled .03 and a TR 230/224 cam.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">7.400 length should be correct. Have you checked your P/V clearance????
<strong> My set up includes 5.3 heads milled .03 and a TR 230/224 cam.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">7.400 length should be correct. Have you checked your P/V clearance????
