Trickflow Top end kit for L48
Pro
Joined: Feb 2006
Posts: 718
Likes: 7
From: Jacksonville , NC
This been beat to death long ago many times ... maybe eb changed specs in that time ... I dunno I ain't gonna look it up again ... but it used to be fairly typical eb's plain performer cam was too small for most street folks ... while eb's RPM cam was too big for most street folks ... that eb didn't have a decent middle choice. Seems to me, most kits (regardless of brand) are a compromise for most folks ... if I'm building a motor & spending that kinda $ I want the parts that are optimally matched to what I have ... not necessarily the priciest nor the biggest ... but the best match.
used to be ... maybe same today:
used to be ... maybe same today:
- performer cam was small aka "RV" cam ... responsive down low but soon runs outta breath. Great heavy/hauler truck cam ... hence RV.
- RPM cam was too big for most street ... poor vacuum, poor response/dog down low.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
75 Waz, I got mail from Jackson and Glensgauges about this subject.
If you stuck with the L48 bottom you need CR from new heads 64, 62 and 58 cc chambers on new heads will do some of that. Then you need a cam, wow these guys are hot on a big point too big is too big and too small is too small.
I think this is the best for me, http://www.sdparts.com/product/SD806...merIntake.aspx
with a cam like this http://www.sdparts.com/product/KITSD...5quotlift.aspx
On top of that, I have asked SDparts to see if I can get the head/intake combo with an Edelbrock performer airgap intake.
What do you think?
If you stuck with the L48 bottom you need CR from new heads 64, 62 and 58 cc chambers on new heads will do some of that. Then you need a cam, wow these guys are hot on a big point too big is too big and too small is too small.
I think this is the best for me, http://www.sdparts.com/product/SD806...merIntake.aspx
with a cam like this http://www.sdparts.com/product/KITSD...5quotlift.aspx
On top of that, I have asked SDparts to see if I can get the head/intake combo with an Edelbrock performer airgap intake.
What do you think?
Keep in mind results from same head-cam-intake kit installed on L48 & L82 will be different because L48 has dished pistons w/ 4 reliefs & L82 has flattops w/ a small trough.
So (if given same head-cam-intake kit) L82 will make more compression, power & torque.
Pro
Joined: Feb 2006
Posts: 718
Likes: 7
From: Jacksonville , NC
I like OK ... has 64cc chambers so scr not so much w/ L48 pistons ... really need fp 1094 shim gaskets here ... dunno what's in kit. That SD174 cam kit's a good choice for L48 ... it's virtually same as well-received summit K1103. Vortecs w/ fp 1094 gaskets will push an OE L48 to about 9.5:1 scr.
Keep in mind results from same head-cam-intake kit installed on L48 & L82 will be different because L48 has dished pistons w/ 4 reliefs & L82 has flattops w/ a small trough.
So (if given same head-cam-intake kit) L82 will make more compression, power & torque.
Keep in mind results from same head-cam-intake kit installed on L48 & L82 will be different because L48 has dished pistons w/ 4 reliefs & L82 has flattops w/ a small trough.
So (if given same head-cam-intake kit) L82 will make more compression, power & torque.
Additionally remember, Im pretty sure that the L82 is a forged crank, 4 bolt main, forged pistons and pink forged rods. A much stronger bottom end. Im figuring that my 64 cc heads depending on gasket thickness CR wil be between 10.2 and 10.7 depending on quenche. Im shooting for 400/400 street motor.
Last edited by rclinton; Dec 30, 2007 at 04:24 AM.
