gta324

Thinking of rebuild see https://www.thirdgen.org/techbb2/sho...hreadid=198698

Will the LPE 219 cam work good with a blower or should I go for a LPE 220 cam.

I want the car to perform good without the blower too....

/N.

89ProchargedROC

what are the specs of each

gta324

219- 219/219 ,560/,560 112 with 1.6 rockers
220- 215/220 ,530/,530 114 With 1.6 rockers

/N.

89ProchargedROC

neither


--you want a cam that has more exhaust duration as well as more exhaust lift. You want what is called a "split"

go over to camaroz28.com and in the forced induction area do a search for "blower cams" you will find a lot of good information

Is this still a TPI setup?

gta324

Superram setup. I was thinking of going over to HSR put I dont rev it that much very often.........

The 383,SR,LPE 219 is a PROVEN combo theirfor I was thinking of it. I will do a search at Z28 forum.

I've read that a SR would like to have a single patter camshaft for making most power......

Does a blower cam make good power without the blower?

89ProchargedROC

the 219 cam is a great MOTOR cam not a BLOWER cam....every combination really needs a specific cam.

Will the LPE 219 work with your blower combo? Sure it will.
Will using that cam lose horsepower over a blower specific cam? Very much so

i know a cam who used a blower cam for a turbo motor and when he finally installed a turbo specific cam (not even custom grind, off the shelf) it only picked up 25peak horsepower but it gained 60hp throughout the rest of the range

also, when you go FI the intake selection isn't as big of a decision as people make it out to be. You can use the TPI setup and still fly it will just take more pressure to do it because it cant flow as much. Make sense or should i explain?

lastly, yes a blower cam will make good power on a motor w/o blower. Most motors will benefit from a "split" duration cam because the exhaust flow is never up to par with the intake flow. So you hang the valve open a little longer and a little higher to compensate for it. The reason why the LPE219 is so popular is because it works well, short duration/high lift (great for making power just need good springs) and gets past the sniffer test.

Hope that helps

gta324

Maybe I should stick with my TPIS zz9 cam?

/N.

89ProchargedROC

if memory serves that cam is suited well with the exhaust bias but doesn't it have a 112LSA?

you'd want more, like a 114LSA

Comp has a lot of off the shelf blower cams that will work well. Look into those

gta324

Found two- in an old catalog (compcams homepage is down)

1. 220/230 ,510/,510 114
2. 210/220 ,500/,510 114

not specific blower cams but they look good or?

/N.

biggtime

Here's a new comp cams blower cam:
hydraulic roller
.224/.236 @.050
.536/.552 with 1.6:1
lsa: 113

Justin 87 GTA.

what about the LPE 220,.. you never answered that one

89ProchargedROC

doesn't have enough split. Should be minimum 8 degree bias to exhaust and the exhaust doesn't have any extra lift either

gta324

I've read alot about cams latly and its not a easy choice.... Compcams havent answered my mail.....

My exact cam speces are, ( not to bad for a blower ? )

Cam advance 4 deg.

Lobe separation 113
Valve overlap -6,3 deg.

Intake:
Valve opening -1,5 BTDC
Lobe center 109 ATDC
Valve closure 32,8 ABDC
Duartion @0,050 211,3
Lift ,48325
Lobe area 23,96

Exhaust
Valve opening 49,6 BBDC
Lobe center 117 BTDC
Valve closure -4,7 ATDC
Duration @0,050 224,9
Lift ,51974
Lobe area 27,03

89ProchargedROC

Thats a decent cam but may be a little small for your heads. In your sig it says 195cc canfields, do you have a flow sheet for them?

If you had some numbers on them i could help you pick a better cam out or give you an idea on what to look for.

gta324

Thats with 1.5 RR

Canfield 195 cc
Lift_____Intake___Exhaust
0,050 __38______33
0,100___74______61
0,200__141______104
0,300__201______135
0,400__247______164
0,500__258______175
0,600__257______183

Engine is will be in parts this weeken so I'll probably relpace my pistons to lower the comp to about 9-9,5, comments?

83 Crossfire TA

iTrader: (2)

I REALLY like the LPE 219, but for a blower setup it’s not the best choice unless your heads have KILLER exhaust ports (as in if they flowed 85-90% of the intake ports)

I'm not as impressed with the 220, but it would be a better choice for a blower motor.

What power band are you looking for?

gta324

up to 5500 rpm maybe 5800 rpm.......