stangkiller2005

iTrader: (15)

so i bought a TR trak cam, and i have some hand ported 853 heads with dual 650 lift springs.

the cam card on my cam says

durating @.50 intake 232.70 exhaust 235.16

valve lift w/1.7 intake .595 exhaust .664

on a 112lsa

will i be ok? i dont even see a spring with 660+ lift on their website. im also lost because i see all these diffrent trak cams with different lifts.

please help

J Glen

There are plenty of PAC springs that can handle that lift and then some. Just get some nice dual springs.

stangkiller2005

iTrader: (15)

It sucks because i bought the heads assembled thinking i could avoild needing to buy a spring compressor. Guess ill sale the 650 springs and look into pac sprngs. Do you think ill have ptv clearance issues?

dr_whigham

iTrader: (49)

Just call Shane @ Thunder and ask him. We were on the phone for about a half hour today helping me with valvetrain as well. Very knowledgeable and very helpful / nice guy.

stangkiller2005

iTrader: (15)

Guess thats what i will be doing tomorrow morninh. Didnt know whobto ask for. Thank you!

Ronny_02_WS6

iTrader: (6)

Well that's weird because the intake lift should be .600+ and the exhaust should be .598??? I have that same cam and the lift are .644 intake .598 exhaust 112 LSA + 2. I recommend you to get .675 springs.

stangkiller2005

iTrader: (15)

so there are different versions of the trak cam? i will be calling shane at thunder racing tomorrow see if he can help me out.

stangkiller2005

iTrader: (15)

prc 675 springs it seems it is. i suppose the 853s are going up for sale assembled with springs and im going to look for some 243s

flattusmaximus78

iTrader: (1)

Why not send the cam card to a machine shop and have springs made for your heads and cam set up. No off the shelf spring is made for any one specific combo.

TurboBuick6

iTrader: (2)

Beacuse for one set of custom springs, they will be worth what the rest of the engine is.

arock24

iTrader: (4)

My cam specs are 231/234 .643/.598 on 111

Dual .650 springs should be just fine for your application. Pretty sure TSP and many other vendors would agree...that is if you don't plan on living @ 6500+

stangkiller2005

iTrader: (15)

Rev limiter is at 6600. My question is why are multiple trak cams different? So far i havnt seen one with the lift mine has. Plus slight duration differences.

arock24

iTrader: (4)

Take a picture of the cam card

My limiter is at 6600 also, but I don't keep it pegged up there. Its not goin to hurt anything by getting .675, I'm just saying it may not be necessary to spend the extra money

stangkiller2005

iTrader: (15)

https://ls1tech.com/forums/western-c...-trak-cam.html

This is the link to can card.