Solid Roller Cam suggestions for 434" SBC, Vortech T-trim
#1
Solid Roller Cam suggestions for 434" SBC, Vortech T-trim
Hi All,
I'm upgrading my Vortech-blown, intercooled 383 to a Motown block-based 434, and I am looking for cam suggestions.
I currently am very happy with the Comp Xtreme Street Roller in 230/236 @ .050"/112lsa/net lift .575/.584 in the 383, but adding 50ci is going to require at least a step up in cam.
Here are my top possibilities, all from the solid roller Comp Xtreme Street lobes:
236/242 on a 114
242/248 on a 115 or 116
236/248 on a 115
I'll be running the same T-trim and intercooler, single plane Holley EFI manifold, 72# injectors, Holley 950 Pro wideband EFI.
I'm keeping my current ported Edelbrock E-Tec 200 Vortec-style heads and 1 3/4" Hedman LT headers.
On the 383, I am making about 11# of boost, so on the 434 I figure I'll get around 8-9#.
Which cam do you like for this, or do you have another suggestion? Not switching from solid roller - I love them, so no hydraulic roller suggestions, please.
The main reason for this upgrade is that I felt I was running out of headroom on the GMPP 4-bolt block. Even with studs and a short fill, this block has its limitations, and I really didn't want to find them the hard way.
Thanks in advance,
Jim
LS1TECH is my favorite Forced Induction forum.
My site: http://home.mindspring.com/~jim_fisk/id1.html
I'm upgrading my Vortech-blown, intercooled 383 to a Motown block-based 434, and I am looking for cam suggestions.
I currently am very happy with the Comp Xtreme Street Roller in 230/236 @ .050"/112lsa/net lift .575/.584 in the 383, but adding 50ci is going to require at least a step up in cam.
Here are my top possibilities, all from the solid roller Comp Xtreme Street lobes:
236/242 on a 114
242/248 on a 115 or 116
236/248 on a 115
I'll be running the same T-trim and intercooler, single plane Holley EFI manifold, 72# injectors, Holley 950 Pro wideband EFI.
I'm keeping my current ported Edelbrock E-Tec 200 Vortec-style heads and 1 3/4" Hedman LT headers.
On the 383, I am making about 11# of boost, so on the 434 I figure I'll get around 8-9#.
Which cam do you like for this, or do you have another suggestion? Not switching from solid roller - I love them, so no hydraulic roller suggestions, please.
The main reason for this upgrade is that I felt I was running out of headroom on the GMPP 4-bolt block. Even with studs and a short fill, this block has its limitations, and I really didn't want to find them the hard way.
Thanks in advance,
Jim
LS1TECH is my favorite Forced Induction forum.
My site: http://home.mindspring.com/~jim_fisk/id1.html
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TTT for you, curious myself what would be a good solid roller.
Off topic, looking through your website, see you show a machine shop in Santa Clara, I'm not all that far off. Is he familiar with LSx engines?
Dan
Off topic, looking through your website, see you show a machine shop in Santa Clara, I'm not all that far off. Is he familiar with LSx engines?
Dan
#7
Sorry, Dan, he's not an engine guy at all. Maybe motorcycles, and he can make any part from scratch, but he doesn't run an auto machine shop.
Tiago, I always have good luck going a little smaller on cams rather than a little bigger. What would you actaully recommend?
Jim
Tiago, I always have good luck going a little smaller on cams rather than a little bigger. What would you actaully recommend?
Jim