Schantin

iTrader: (6)

Read the various articles, but still not sure the final verdict. So.....

Here's a little history so ya'll see where I'm coming from on my Q:

Currently have a Comp Cams 228/228 .588/.588 115LSA cam in the car. Also have Patriot Stage 2.5 LQ( (72cc) heads. Ca had a turbo installed till last month Is now N/A.

Thanks to the lower compression heads I've lost low end power/torque. I know this cause I went from 3.42 gears to 4.11's and it feels about the same (possibly a touch faster) to 60mph. Have stock heads currently at a local shop being ported/flow tested/ dual springs installed. Should be decent flowing once done and will bump my CR back to 10 to 1, which will help.

OK, now for the question......

The real Q is the cam. The current .588 lift and 228 duration seem "decent" for street driving, but not so sure about the 115LSA. Is it worth changing the cam to a 112LSA when swapping the heads? I don't mean labor (I'm doing the swap)....I mean will it make enough power difference to be worth the $400+ cost for a narrower LSA cam + gaskets?

If I'm thinking correct, the lower LSA should push the torque powerband lower in the RPM range? But, how much? Will power "under the curve" be enough to justify the change (like 15-20RWHP), or is it more like a couple HP?

$0.02 appreciated. Looking to change the heads in 2-3 weeks...... and would like to have some educated opinions on the cam before.

Thanks.

98RedZone

iTrader: (1)

I come up with an IVC of 49 and DCR of just 7.6X if there are zero degrees of advance built into it. If you advance it 4* it comes out to IVC of 45 and a DCR of 7.9X. Do you have a cam card?

I would find out your exact specs and then have the heads milled to boost DCR for more torque.

eamador11

but i did stay at a holiday in express!

ok, to answer the ops question, going to a 112LSA will move the power band in the lower RPM range which means the power will come on sooner. it also means the car will have more of a choppy idle. if you dont want that stick with a 114LSA for better street driveability.

Schantin

iTrader: (6)

I have the cam card floating around the garage. Need to dig it out to see what the built in advance is.......

Tainted

iTrader: (9)

i got the 228R same specs but on a 112lsa driveability is wonderful and the power comes on as soon as I hit the gas. I think the power range was from 2200-6400 with peak at 6200

Schantin

iTrader: (6)

Where did you get the conversion charts to come up w/ these #'s? Been hunting around the sticky's, but didn't notice anything to use good ol' math to answer my Q.

98RedZone

iTrader: (1)

try here

https://ls1tech.com/forums/showthrea...637&highlight=

Schantin

iTrader: (6)

Thanks!