Mix'n'Match

[Khipset]

What I want to do:
3500 Valves and Springs on a 2003 LA1 heads. I used to use the main 60degreev6 page to look at specs, but I can't seem to access it anymore.

Anyway, I was wondering, will the 3400 seats, guides, retainers and keepers work with 3500 Valves and Springs?

[WrathOfSocrus]

Yes, the lighter weight 3500 valves are a nice upgrade for 3400 heads and weren't too expensive last time I looked. I believe the springs also have a slightly higher pressure ( around 20 lbs higher I think??? don't recall if that was open or seat pressure that was increased) which should aid in higher RPM stability.

[SappySE107]

3500 springs aren't different.

[Khipset]

Excellent. Thank Yall

[Superdave]

3500 springs aren't different.

they are different than 3400 springs last i knew.. open/closed pressure was higher.

[MidnightriderZ24]

nothin to brag about really. plus the 3500 will most likely have low miles, springs will be nice

[Khipset]

Does anyone have some cheap ideas for Rockers? Will be going on the heads with the configuration as above.

[SappySE107]

If you need some 8mm stock rockers, I have a set I can sell for $50 plus shipping.

[Khipset]

Sorry, I should have been more specific. I have a set of stock 8mm's.

I am looking for either an easy mod to the stockers to raise the compression ratio slightly.

Am also open to other ideas (hopefully on the cheaper side) but I am not fluent enough to figure out a configuration to use.

[SappySE107]

wow, I should have added that to my april fools listing. Rockers don't increase compression.

[Khipset]

Ugh, its not been my day. Rocker ratio*

[SappySE107]

The only way to change the ratio is new rockers.