sbf pushrod

building a 351w roller block with 302 e7te heads, anybody know what pushrod to use?

 

First why are you using 5.0 heads on a 351w ?
The best and safest way is to get a push-rod measuring tool so you are 100% sure of the correct length . There can be a big difference from engine to engine due to valves being reground , head work , milling of the head and a block being squared up . That all adds up and can end up being a 1/8th" to a 1/4" or more difference . The push-rod measuring tools aren't that costly but that's the only true way of getting the correct push-rod length you need .

Retro Jim

 

Anytime you are building a modified or custom engine... Be it a chevy, ford , whatever..... Pusthrod length is to be figured when all parts are assembled.... Base circle of performance cam,how much block and heads have been cut,what the stem height is, and what rockers you are using all factor into what pushrod length is needed to achieve the proper geometry.

Tony

 

Ahhh Jim.... You type faster than me

 

we are using the 302 heads cause thats what I had lying around, they are the same casting as the stock 351w heads but these use the bolt down type rockerss and the stock ones use adjustable type, really rocker and head bolt size is the only difference, now then both block and heads are stock and the cam is very mild, just figured some one had done it with off the shelf stock parts, the motor is pretty mild and going in a street car for transportation nothing hi-po, just thought maybe some one had done it

 

the heads you have will work just fine. when i built my 302 into a 331 stroker with edlebrock heads i made my own push rod tool thats adustable. i used a long bolt that i cut the head off of and rounded the end and then put a peice of small diameter tubing and threaded the inside and put a shorter bolt in the other end and cut the head off of it. installed it and set it then measured it. after all that i ended up using stock lenght 5.0 liter pushrods for a roller cam. i have a feeling you will be using stock 351w pushrods.

 

since they're the same bore size, is there really a problem with the 4.9 heads on the 5.8? With regard to quench, I mean. Not the namby pamby rocker and bolt stuff.