rods
- Thread starter sean
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sean
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Windedv6
Ty n 10s
Re: rods
We use 5.7 rods on the 3.75 crank. The 5.85 and the 6s will give you less compression height on the piston (because of the piston dish), if you want to stay with an 8.5:1 - 9.5:1 compression ratio. If you are doing flat top pistons then go with 5.85 rods, but your compression ratio will be in the 10:1 range or higher depending on the head chamber size. Cometic makes a .051 (vs .040) which will help some to keep the compression down.
John
We use 5.7 rods on the 3.75 crank. The 5.85 and the 6s will give you less compression height on the piston (because of the piston dish), if you want to stay with an 8.5:1 - 9.5:1 compression ratio. If you are doing flat top pistons then go with 5.85 rods, but your compression ratio will be in the 10:1 range or higher depending on the head chamber size. Cometic makes a .051 (vs .040) which will help some to keep the compression down.
John
sean
Member
Re: rods
i should have explain myself better, it's a bow tie block 051, fully ported polish brodix pontiacs, billet steel 3.75 stroke crank, twin turbo, if have to i would get custom je piston's, the machine person that i was using that was going to built it for me just past away and i had to get my stuff back. i talk to a known builder in new york and he told me to go with 6'' rods.i thought that was to big that is why i'm asking on here.
i should have explain myself better, it's a bow tie block 051, fully ported polish brodix pontiacs, billet steel 3.75 stroke crank, twin turbo, if have to i would get custom je piston's, the machine person that i was using that was going to built it for me just past away and i had to get my stuff back. i talk to a known builder in new york and he told me to go with 6'' rods.i thought that was to big that is why i'm asking on here.
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It's just a six
Super Member
Re: rods
Go with longest rod possible w/out having to get too crazy into custom work/parts to make it all fit.:2cents:
Go with longest rod possible w/out having to get too crazy into custom work/parts to make it all fit.:2cents:
sean
Member
Re: rods
if i used a 5.7 rod won't that make a top heavy piston? i have the bow tie 051 block deck height is 9.025. with billet 3.75 stroker, I'm aiming to a 9:1 i was unable to get this far with my builder as, he gotten sick and past away. i just got my stuff back. r.i.p Don!!!! also i'm going for street strip set up
if i used a 5.7 rod won't that make a top heavy piston? i have the bow tie 051 block deck height is 9.025. with billet 3.75 stroker, I'm aiming to a 9:1 i was unable to get this far with my builder as, he gotten sick and past away. i just got my stuff back. r.i.p Don!!!! also i'm going for street strip set up
sean
Member
sean
Member
Re: rods
virgin bowtie, pontiacs with 64cc. the head camber across was a little shy of 4.040
virgin bowtie, pontiacs with 64cc. the head camber across was a little shy of 4.040