Camshaft help please
Thread Starter
Teching In
Joined: Apr 2013
Posts: 5
Likes: 0
Camshaft help please I have been reading on this forum for a long time but I think this is the first time I’ve ever posted. I need some help with making a choice on a camshaft for my setup.
I have emailed BTR and Texas Speed for help. Texas Speed replies but told me to run their cams, I would need to get different springs. That wouldn’t be a big deal if I hadn’t just bought a pair of LS3 ported heads and spent extra for BTR .660 lift springs. Texas Speed says I would experience valve float using btr springs with TS camshafts.
I havent heard anything back from BTR. I am leaning towards using the BTR 400ci+ stroker NA cam, but I’m a little concerned TS mentioned that the valve springs I have are a potential problem.
Specs listed below.
Two questions.
Has anyone here used the BTR stroker cam on an Ls3 headed 408? Results?
Is there some problem with the BTR springs I am unaware of and is there legitimate concerns woth these?
Specs:
-408
-Eagle forged 4” crankshaft
-Eagle H beam rods
-Mahle forged flat tops -3cc valve reliefs
-4.030 bore
-.040 head gasket
-.002 pistons to deck clearance.
-11.4:1 compression
-Brian Tooley Ls3 ported heads with btr springs
-Hi-ram sheetmetal intake- 6” intake runners
-92mm TB
-1-7/8” long tube headers
-Full exhaust- 3” h pipe to mufflers- 4” out of mufflers
-4l80 transmission
-3800 stall converter
I have emailed BTR and Texas Speed for help. Texas Speed replies but told me to run their cams, I would need to get different springs. That wouldn’t be a big deal if I hadn’t just bought a pair of LS3 ported heads and spent extra for BTR .660 lift springs. Texas Speed says I would experience valve float using btr springs with TS camshafts.
I havent heard anything back from BTR. I am leaning towards using the BTR 400ci+ stroker NA cam, but I’m a little concerned TS mentioned that the valve springs I have are a potential problem.
Specs listed below.
Two questions.
Has anyone here used the BTR stroker cam on an Ls3 headed 408? Results?
Is there some problem with the BTR springs I am unaware of and is there legitimate concerns woth these?
Specs:
-408
-Eagle forged 4” crankshaft
-Eagle H beam rods
-Mahle forged flat tops -3cc valve reliefs
-4.030 bore
-.040 head gasket
-.002 pistons to deck clearance.
-11.4:1 compression
-Brian Tooley Ls3 ported heads with btr springs
-Hi-ram sheetmetal intake- 6” intake runners
-92mm TB
-1-7/8” long tube headers
-Full exhaust- 3” h pipe to mufflers- 4” out of mufflers
-4l80 transmission
-3800 stall converter
Last edited by acmillr; Sep 8, 2018 at 12:15 PM. Reason: Spelling.
You will not float with a TSP cam and BTR springs as long as you use good pushrods. I would slightly clearance your pushrod bosses and run 3/8" pushrods. Will not float.
Be patient. Wait to hear back from Tooley, since they did the heads. Nobody can spec you a cam better than the one doing the head work. LSFest is going on right now, so most venders are in Bowling Green and not returning calls. I’m waiting for a callback right now from Mast and WS6Store. I think both are at the show.
Thread Starter
Teching In
Joined: Apr 2013
Posts: 5
Likes: 0
Thread Starter
Teching In
Joined: Apr 2013
Posts: 5
Likes: 0
Thread Starter
Teching In
Joined: Apr 2013
Posts: 5
Likes: 0
Be patient. Wait to hear back from Tooley, since they did the heads. Nobody can spec you a cam better than the one doing the head work. LSFest is going on right now, so most venders are in Bowling Green and not returning calls. I’m waiting for a callback right now from Mast and WS6Store. I think both are at the show.
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