Im buying parts for new heads, and one of the things i got already was 1.6 roller tip rockers.

I am getting forged pushrods, the question is can i get stock length or should i get +0.1" longer pushrods ?

 

You need to measure for the correct pushrod length, especially with new heads and rockers

 

hmm.. that poses a problem... i need to drive the car, my friend and i were planning to do the head swap over a weekend... if i have to measure for pushrod length then i am assuming i need to install the heads then measure, and then i would have to order the pushrods ...crap =(

 

as a rule, but not all the time, changing rocker ratio won't need longer push rods. changing cam lift might, as a rule .050-.100 more lift= longer push rods. if you have no choice i'd run stock length and check it when you assemble it

 

the stock cam in that engine had these specs:
Camshaft lift: 0.390” / 0.410” Hydraulic
Duration @ 0.050”: 195° / 202°

I am using a Comp 262 grind right now
Comp Cam Kit 238 Grind: 262 Lift: .462"/.469"
Duration@ .50 218/224
Lobe Separation 110
rated RPM: 1300-5600

so thats 0.072 more lift on intake and 0.059 more on exhaust
... would it be safe to assume i need pushrods that are 0.05 longer?

Another quick question are the stock rods 3/8 or 5/16, i was assuming 5/16 since that is thinner.

 

use the stock length, you shouldn't have any problems, but check it to be sure

 

With that cam, stock length (7.290" or 7.300" depending on measurement method) should be fine.