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| mickoxhxr8 |
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Need to purchase poly locks for my r r . Hope someone could tell me whether the stock heads on 5.0ltr use 3/8 or 7/16? Thanx
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| GTBob |
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Do you mean POSI_LOCKS
 
_________________ Rotten Old Revhead!!! XW GTHO + EF ex cop car (exractors 2.5 cat back zorst !6" Simmons K&N +airbox mods Lowered with Bilstein shocks+Whiteline Bars NEXT THING Swap HO for GTP or Ferrari! |
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| mickoxhxr8 |
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my bad, YES Posi locks.
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| Walker |
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So what exactly have you done here, machined for screw in studs etc, or fitted bolt on adjustables?
You could measure the shaft on the studs to find out if you need 3/8 or 7/16. |
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| mickoxhxr8 |
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Im soon to remove the heads and machine to suit rr and new springs.
Im not real sure what I need (never done rr b4). Thats the reason for the question, triing to source all the parts before I rip the heads off :? I guess I should had asked what size bolt is used in the stock rockers so I can get the correct sized studs and then the correct posi locks to suit the studs mick |
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| Walker |
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Are you buying new rollers?
If so the posi locks come with them. |
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| mickoxhxr8 |
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k so that sorted, what size studs do I need 3/8 or 7/16 ?
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| ixlrate |
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Hi,mick my engine builder will be back on the 15th and he knows wat size studs, posy locks you will need to fit those rollers and springs,myself i haven't got a clue on sizes the posy locks that i bought with rollers were to big so that might tell some if they are 3/8 or 7/16,i can tell metric sizes but imperial is double dutch
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| mickoxhxr8 |
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yeh that would be great, will makes it alot easier :D
thanx rick |
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| hans hartman |
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{USERNAME} wrote: Hi,mick my engine builder will be back on the 15th and he knows wat size studs, posy locks you will need to fit those rollers and springs,myself i haven't got a clue on sizes the posy locks that i bought with rollers were to big so that might tell some if they are 3/8 or 7/16,i can tell metric sizes but imperial is double dutch i think stock is 5/16 unc threads, roller rocker posts are 3/8 or 7/16 unc threads, you have to drill, tap all post threads bigger-both heads,and use studs,to lock down
_________________ R.I.P HANS HARTMAN |
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| ELGT |
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Well, do you have bolt on rollers, or adjustable?
Are the roller rockers on the car? If not, measure the shaft size on the roller trunion. The posi lock size depends on the roller rocker used. Stock heads on Windsors DO NOT have screw in studs, guide plates, hardened pushrods. They are a bolt on, non adjustable type. |
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| hans hartman |
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{USERNAME} wrote: Hi,mick my engine builder will be back on the 15th and he knows wat size studs, posy locks you will need to fit those rollers and springs,myself i haven't got a clue on sizes the posy locks that i bought with rollers were to big so that might tell some if they are 3/8 or 7/16,i can tell metric sizes but imperial is double dutch i think stock is 5/16 unc threads, roller rocker posts are 3/8 or 7/16 unc threads, you have to drill, tap all post threads bigger-both heads,and use studs,to lock down
_________________ R.I.P HANS HARTMAN |
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| Walker |
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To give you a rough indication (Without being exact to the . of a mm), 3/8 is around 9.5 mm, 7/16 is around 11 mm.
If the posi locks were too big then you obviously need 3/8. |
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| ixlrate |
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{USERNAME} wrote: To give you a rough indication (Without being exact to the . of a mm), 3/8 is around 9.5 mm, 7/16 is around 11 mm.
If the posi locks were too big then you obviously need 3/8. Maybe i got it wrong but i've just measured them and it's 11mm so that makes them 7/16??,anyway you should have them in you hands early next week and you can take them to a workshop or so and get advice on the correct size,as far as i know these r adjustable.
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