1.5-1.6 Roller Rocker Pushrod Length Difference?
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
1.5-1.6 Roller Rocker Pushrod Length Difference?
I'm going to put some stud girdles on my engine and while I have the rocker nuts off, I thought I'd throw on some 1.6 rockers. The dyno guy today called my .520 .540 lift cam a baby cam, and it hurt my pride. 
I used an adjustable pushrod when I was building my engine to determine length and it came out to be 7.45" I think. Will I need different length pushrods with the new 1.6 rockers, or is the difference miniscule?
I used an adjustable pushrod when I was building my engine to determine length and it came out to be 7.45" I think. Will I need different length pushrods with the new 1.6 rockers, or is the difference miniscule?
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
U need a p-rod length checking tool.
Originally Posted by torqvette
I'm going to put some stud girdles on my engine and while I have the rocker nuts off, I thought I'd throw on some 1.6 rockers. The dyno guy today called my .520 .540 lift cam a baby cam, and it hurt my pride. I used an adjustable pushrod when I was building my engine to determine length and it came out to be 7.45" I think. Will I need different length pushrods with the new 1.6 rockers, or is the difference miniscule?
I used an adjustable pushrod when I was building my engine to determine length and it came out to be 7.45" I think. Will I need different length pushrods with the new 1.6 rockers, or is the difference miniscule?Yea, i tried using an adjustable p-rod to measure while block still in car and after a day and 1/2 i gave up.
Bought both the cheap Manley and ProForm checking tools (for pocket change) as a double check and the new p-rods worked out fine with my 1.6 rockers.Have never found how they work for both 1.5 and 1.6 ratios but i won't look back now.
Anyways my new p-rods were only .050" shorter but the wear pattern tells me i did something right.
Hope this helps and man those are great lift numbers.
cardo0
