Mookster

^^Im not sure anynmore, ace32x keeps talkngme into an RHS 502Ci motor with some juice

Original plan was an all out forged 427 with an 88m turbo but after reading some threads it appears that turbo might be too small and im not sure i want a bigger turbo.

Will research superchargers next

slow02gt

hmmmmm erl shortblock from me with an f1x is a nice combo... fore fuel system,a&a secodary drive..

dont listen to ace32x(he doesnt even listen to himself most of the time lol

Mookster

Ok guys, its decision time. My motor has 100% sold and been pulled out of my car.

I have shopped around and i gotta tell you some of our supporting vendors here just dont care. I got couple quotes from couple big name shops and price was unrealistic. Will also say that couple vendors were nice and took their time to explain stuff and put out competitive quotes

Has anyone put purchase a longblock from Mast, they are supper competitive and nice ppl to talk to


Specs:
Type: LSX 7.0L
Displacement: 427 Cubic Inches
Compression Ratio: 10.0:1
Bore x Stroke: 4.125 x 4.000
Rev Limit: 7000 RPM
Crank: Callies Dragonslayer Long Snout
Rods: Callies I-Beam HD
Pistons: Diamond 2618 Forged
Cam: Mast Custom 3-Bolt Core Cam
Heads: Mast Black Label LS7 285 Cylinder Heads
Valve Springs: Mast Premium Dual Springs
Part Number: 000-167
Retail Price: $16,995
GMPP LSX Iron Block
Plateau Honed to 4.125”
True Surfaced Deck
Engine Block Debured
Blueprinted Shortblock
Clevite Rod and Crank Bearings
Callies Dragonslayer 4.000” Crankshaft
Callies Forged HD I-Beam Rods
Custom Diamond 2618 Alloy Pistons
Mast Black Label LS7 285 Heads
ARP 6-Bolt Head Studs
ARP Main Studs
Cometic Headgaskets
Mast 3 bolt Core Custom Cam
CHE Bushed Rockers
Cloyes Billet True Roller w/ Z-Chain
Morel Link Bar Lifter Kit
Mast Black Label Pushrods
Mast Premium Dual Springs
Mast Titanium Intake Valves
Mast Inconel Exhaust Valves
Titanium Retainers
Machined Locks0-2218 | info@
Crankshaft Position Sensor
Camshaft Position Sensor
Oil Pressure Sensor
Oil Temperature Sensor
Engine Coolant Temperature
Engine Knock Sensors

^^Hopefully the above copies over well but longblock with those parts is right around $16k

Bryan @ LME is also one awesome dude to talk to, his quote came in very competitive to the Mast but he would use Ultra billet Callies rods and Crower shaft rockers and is slightly more in price.

So that's what im down to...i'd like to hear what you guys have to say about specs and what not.

Others have quoted me using Trick flow heads....any thoughts on those heads?

Unreal

TF doesn't have ls7 heads out yet, so you would be going with ls3 style heads.

I would go with LME over mast but that is me.

Mookster

I guess they are saying they combined the LS7 and LS3 into their 255 gen X head but vendor still confirming which intake mani to run but i thin ur right the ls3

Unreal

They have an ls7 head coming out. I think the vendor maybe out of it. I wouldn't do those heads, and yes the 255 gen x use ls3 intake.

dsp300c

x2
LME is building my motor now. just waiting on pistons. Bryan made it so easy and had answers/prices to me asap.

realcanuk

Can't comment in Mast. LME did a great job on my engine and Bryan was a pleasure to work with. I wouldn't use anyone else next time around.

Mookster

Do any of you have TMS(Thompson motorsports)
http://thompsonmotorsports.net/

They are a lot cheaper than most places but they use an Eagle crank and pretty much everything else like others. I looked them up and have solid rep and used on LS1tech

ATLS2

I have not gotten my engine done yet, but I do plan on taking it to DRM. I don't need a new block, so I'll be using my LS2 and getting it done to be able to handle 1100-1200 hp crank as my goal is under 900 whp.

Slo-Poc

Futral Motorsports built my ls3 with TF heads. Should be over 900whp when done. But Looks like a nice line up of parts and looks like you found someone who you like to do the work. Trust them and make sure you are clear on everything you want and you should be fine.

old motorhead

Tx Speed did my last one. Everything was new on the long block . VERY mild custom Comp cam. 218/230 118lsa using Comp's supposedly mild LXL lobes. Daily driver truck that rarely saw any rpm north of 5500. They put the long block together. It broke a valve spring inside of a year. They were "nice" enough to either buy me one new valve spring (one) or sell me a full set at a discount. I thought they could have done a little better than that. I mentioned that their cost on a new set of valve springs would buy them lots of good will. They disagreed. I won't be doing much, if any, business with them from this point forward.

Mookster

I have read some interesting stuff on Texas Speed for sure. They are slightly cheaper than other shops but appear to have the most issues. This could be due to higher volume.

Mast and LME build sheets are very close and rated for 1300whp+ by them but im not so sure i will ever make that power or anything north of 900whp.

Nicely spec'd forged LS3 is about $12k that should be able to hold 900whp but key word should. So i keep asking myself if its worth dropping the extra $5k for better hardware or not...ah this is rough to decide

JoeyG

I beat the dogsnot out of my old LME 416 nitrous stoker for over 6 years. I have nothing to say but praise to LME. The other Texas vendor mentioned, I couldn't care if they stayed in business or not.

Unreal

Figure out end goal. Honestly I would do a nice forged ls3, 750-800rwhp and call it a day. I keep turning my car down and down. I think ~800rwhp is the sweet spot for a c6 chassis. Past that traction and other issues rise up.

Realfast86

I had TMS building my first LSX and they tried to sub a eagle crank for a Dragonslayer which was supposed to be on back order and said it was exactly the same quality/cost and all then a few other details they were clueless about they got tired of me catching them in the BS and refunded my money! Lots use them with good results but not me they said i was never going to be happy i said exactly when your slinging all this BS my way!
Stay with Bryan at LME he will treat you right!

ace32x

after driving my car this weekend im with unreal here, forged ls3 with a novi 2200 and call it a day. your not hooking over that. im spinning my hoosiers in second if theyre not heated well with only low 7xx off spray

Unreal

Unless you plan on an auto, 15" wheels/etc and going all out then there is no point in going to insane. Plus it depends on what events/etc you have. If you live in Texas/etc and have miles events then I guess more power won't hurt. Out here all we have is a strict drag strip so doesn't really help to make another 200-300rwhp.

Mookster

Thanks guys for your opinions. Texas Speed and TMS are out.

LME & Mast are my only options at this point.

Car will be mainly used for roll racing in Seattle temps which in summer are in mid 80s if that.

Sounds like Unreal and Ace are recommending sticking to 800ish whp. Do i just stick with a forged 416 LS3. My only concern with a 416 would be how long can it take say 850whp? Then, which heads do i go with?

Mookster

Picked up the phone called LME and they didnt sound too excited about LS3 and he seemed very sincere more so than trying to sell me the more expensive LSx Block.

He did mentioned that he would much prefer LS2 402 block due to cylinder wall thickness.

Waiting to get a new 402 quote.