Pushrods real close to hitting on Trickflow 220 heads
Thread Starter
11 Second Club
Joined: Dec 2002
Posts: 1,498
Likes: 10
From: long island, ny
Pushrods real close to hitting on Trickflow 220 heads i just finished putting the valvetrain all together and i noticed that every single intake pushrod is very close to rubbing on the head. the exhaust pushrods are dead center in the wholes. im running stock rockers and only 5/16 trickflow pushrods which are .080 wall chromoly. i was thinking about upgrading to 11/32 or 3/8 pushrods since im running a length of 7.550.
i could still return the pushrods and order some custom length 11/32 double tapper pushrods but not sure if they are going to fit if i do get them.
anyone else have this problem with these heads?
do you guys think it would be wise to upgrade to a thicker pushrod or will i be ok with what i got...i will be turning to 7000 rpm and at 650 hp
thanks guys
joe
i could still return the pushrods and order some custom length 11/32 double tapper pushrods but not sure if they are going to fit if i do get them.
anyone else have this problem with these heads?
do you guys think it would be wise to upgrade to a thicker pushrod or will i be ok with what i got...i will be turning to 7000 rpm and at 650 hp
thanks guys
joe
check out this dyno I did between the two pushrods...I don't have as cast but 215 heads and the max that would fit are the 11/32" pushrods...I tried 3/8" and had the same problem you did with the intakes rubbing...stability was the same and I think you will be fine with the 5/16s...
https://ls1tech.com/forums/dynamomet...sure-diff.html
https://ls1tech.com/forums/dynamomet...sure-diff.html
Thread Starter
11 Second Club
Joined: Dec 2002
Posts: 1,498
Likes: 10
From: long island, ny
my intake is not rubbing but it is damn close...i think i could fit 11/32s if i wanted to but i already have the 5/16 installed lol.
what length pushrod do you run and what rpm did you bring it up to on the dyno?
hey thanks for the info man
what length pushrod do you run and what rpm did you bring it up to on the dyno?
hey thanks for the info man
it was pulled to 7k...I run a manton 3 piece 7.430 custom length...zero lash was 7.400 ad I wanted .030" preload for my morel lifters...
check out this dyno I did between the two pushrods...I don't have as cast but 215 heads and the max that would fit are the 11/32" pushrods...I tried 3/8" and had the same problem you did with the intakes rubbing...stability was the same and I think you will be fine with the 5/16s...
https://ls1tech.com/forums/dynamomet...sure-diff.html
https://ls1tech.com/forums/dynamomet...sure-diff.html
Curious, is the blue curve in the pushrod dyno the 5/16"? Reason I ask is my two lied on top of each other until about 6,200 RPM where the last several hundred RPM the stiffer double tapered pushrod provided about 5 more hp. The curve flattened a bit with the stiffer pushrods.
i just finished putting the valvetrain all together and i noticed that every single intake pushrod is very close to rubbing on the head. the exhaust pushrods are dead center in the wholes. im running stock rockers and only 5/16 trickflow pushrods which are .080 wall chromoly. i was thinking about upgrading to 11/32 or 3/8 pushrods since im running a length of 7.550.
i could still return the pushrods and order some custom length 11/32 double tapper pushrods but not sure if they are going to fit if i do get them.
anyone else have this problem with these heads?
do you guys think it would be wise to upgrade to a thicker pushrod or will i be ok with what i got...i will be turning to 7000 rpm and at 650 hp
thanks guys
joe
i could still return the pushrods and order some custom length 11/32 double tapper pushrods but not sure if they are going to fit if i do get them.
anyone else have this problem with these heads?
do you guys think it would be wise to upgrade to a thicker pushrod or will i be ok with what i got...i will be turning to 7000 rpm and at 650 hp
thanks guys
joe
Link to Pushrod Post
