hey, would i get similar numbers and power from a lt1 camshaft with 1.6:1 rockers as a lt4 with 1.5:1? is there much difference?
anyone have the specs for an lt1 cam? thanks for the help

 

The two cams are about the same. Nothing to get excited about.

 

well i was gonna get a lt4 cam down the road but i found a lt1 cam for 20 bucks so...

 

LT1 cam .447"/.459"
lift after 1.6 rockers .715"/.734"



LT4 cam .476"/.480"
lift sfter 1.5 rockers .714"/.720"


there you go.


i plan on getting a LT1 cam in my 89 305tpi and then getting roller tipped 1.5's

 

thanks for the info man

 

Think those second numbers are little out of whack.

Take 1.6/1.5 * the lift with 1.5 rockers to get lift with 1.6 as opposed to 1.5.

I believe the first set of number for each is the lift with 1.5 so with 1.6 you get 0.477 and 0.490 then 0.508 and 0.512.

 

yeah ur right, those figures would be with the 1.5's already...just realized that too

 

Fevre is right, i messed up the #'s
it was like 2:45 in the morning
sorry about that just tryin to help

 

I read that and I was like... wtf? That would take valve float to a whole new level - lol.

 

its cool, mistakes are made, i appreciate the info...what kind of rockers r u getting, are they self aligning or are u puttin in the guideplates, etc?

 

i'm right now stuck in between cams...

the LT1 cam and the

Ram Jet cam
Duration @ 0.050 (I/E): 196/206
Lift, (I/E): .431"/.451"
Lobe Separation: 109
RPM Range: 800-4500
Type: Hydraulic Roller


this is because i have mostly stock 305tpi.and this cam is a great improvement over my stock cam.

if get the ram jet cam, i'm gonna put on stamped 1.6's this will only cost me 250 to do nd will give 15hp.

but if i get the LT1 cam i'm looking at the range of 500, to do with new springs and new 1.5 roller tiped rockers

 

again, where are u gonna get these rockers? ...why not the lt4?

 

i'm not gonna get the LT4 cam, cause i don't want something that radical for my 305right now. i drive this car to school, twice a day and to work twice a day, so i still need to have a good daily driver, plus i don't have headers yet..



from www.SDPC2000.com
they are comp cam magnum rocker arms for 87+ sbc's
and they are 1.52 not 1.5 ratio