Photochop

iTrader: (74)

Yeah, I understand that. Do you know how the PRC duals fare against the Patriot Extreme Duals? I thought they were virtually the same spring from what I'd heard, but TSP doesn't post up that thorough of specs about the PRCs on their site...

rufretic

iTrader: (37)

I used the PRC duals on my old set-up and have no complaints. I had a cam with .598 lift and pushed 14psi on them with a nice smooth graph all the way to 7000rpm and 680rwhp on a stock block with 317 heads. Now my new cam is bigger and I'm going to be pushing more boost so I needed a spring that could handle more lift but also have a higher seat pressure, that's the only reason I went with these new ones I posted.

Frank02L

iTrader: (1)

I dont know about the PRC specs but the rev limiter is at 7500 (saw upper 6k's with the new motor 1st time out) now and we made 24psi on them and didnt have any signs of weak springs.

DanZ28

iTrader: (5)

Good to know.

Photochop

iTrader: (74)

Wow, impressive.

52172

iTrader: (2)

I've heard they are the same spring also.