418 LS3 top end?
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From: Sterling Heights, MI
418 LS3 top end? Thunder is building my a 418 stroker and i donno what top end to go with. Ive been searching and searching all last night and still cant decide really.
Motor is going to be a "max effort" oriented N/A setup that i MAY hit with a 150 eventually, so im thinking the cam will be on the larger side, but we havent decided on one yet. I know LS3s cant handle/dont like huge cams.
Ported L92s or AFRs? Fast or Vic Jr/Vic Sr with an accufab on top of it?
Ive got a built T56, will have a McLeod twin disc, and a built 9" w/ a 4.56 gear if supporting mods would matter. Car is for street racing/track racing only
Motor is going to be a "max effort" oriented N/A setup that i MAY hit with a 150 eventually, so im thinking the cam will be on the larger side, but we havent decided on one yet. I know LS3s cant handle/dont like huge cams.
Ported L92s or AFRs? Fast or Vic Jr/Vic Sr with an accufab on top of it?
Ive got a built T56, will have a McLeod twin disc, and a built 9" w/ a 4.56 gear if supporting mods would matter. Car is for street racing/track racing only
im going to be running the thunder racing stroker v.3 cam with my ls3 418 setup and i should exppect to put down around 575rwhp with trickflow 225s and a fast 90, but if ur going for max effort than id say go with a vic jr and a 4150, also that cam works well with nitrous and i too am planning on hitting it with a 150 shot, bigger cubed motors love a bigger cam, and id def go with a set of afr heads
Last edited by z28kidd; Jan 25, 2011 at 11:20 PM.
ls3 im in the process off building a 415 stroker with l92 heads and ls3 intake. Im having patrick G spec out a good sized cam because im going to be mostly n/a but want to spray a 150 shot later on. If your on a budget its hard to beat l92 heads i have 400. in the heads and 250 in upgraded springs. 650 total. I took the time to exsaust port them and polish the bowls. My builder did a set like what i did and they only made 7hp less than cnc ported prc heads. just a few options for you.
well when i see the words "max effort" i tend to think max budget as well, either way u cant go wrong with either, but afr heads are the truth! especially with porting work done to them ( if even needed)
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My 416 made 714 HP with advanced induction 267cc L92 heads and a single plane manifold. I highly recommend a set for your build. If your engine has the bore to support a set of LS7 heads, I would go with that option.
Here is the engine build to give you some ideas:
https://ls1tech.com/forums/dynamomet...-714hp-na.html
Here is the engine build to give you some ideas:
https://ls1tech.com/forums/dynamomet...-714hp-na.html
Max effort NA ,equals max $$$ What is your budget? The after market heads all have better castings,and more potental then the GM castings.
I would look at the Mast heads and their intake for a NA build. I would loose the T56 and look at a 4 speed manual. If switching to an auto then a glide is the choice.
What are your power ,ET, and or class goals.
I would look at the Mast heads and their intake for a NA build. I would loose the T56 and look at a 4 speed manual. If switching to an auto then a glide is the choice.
What are your power ,ET, and or class goals.
