402 stroker
Instructor
Joined: Jun 2005
Posts: 155
Likes: 0
From: Brooklyn Park MN
Originally Posted by Randy@DRM
That motor looks to me like it has been rattleing. Too much timming, not enough fuel. A good tune on a motor with even cast pistons would last longer. Just because one guy bought a motor and the pistons came apart in every hole doesn't mean it's a bad piston design. I have no ties to SLP or Ross pistons, but I think they need some help about now.
I have over 4000 miles on the exact same block the guy on LS1TECH has. I will also say I have pushed the motor hard with no problems. The only complaint I currently have that that I do have a minor oil burning problem, but that is it. Sounds like it’s a set of defective pistons to me, because 5 of them went down.
My 2 cents…
Burning Brakes
Joined: Jan 2003
Posts: 833
Likes: 7
From: Midtown Motors Indiana
Cruise-In V Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Originally Posted by 198C5
anyone running a slp 402 my 98 needs a new eng. 
thinking about the 402 my old motor had 426 rwhp just wondering if it is worth the money?
thinking about the 402 my old motor had 426 rwhp just wondering if it is worth the money?http://www.forcefedhighperformance.com/
Drifting
Joined: May 2003
Posts: 1,715
Likes: 1
From: cAshburn VA
Originally Posted by FastCashDave
Talk to Brad At Forced Fed High Preformance He has a great deal on 408 long blocks under 6 grand.
http://www.forcefedhighperformance.com/
http://www.forcefedhighperformance.com/
Pro
Joined: Aug 2005
Posts: 655
Likes: 1
From: Seminole FL
St. Jude Donor '12
I plan on going the 402 route in a few months. Where do Lunati cranks fall in the rankings? A very knowledgeable friend hates Eagle cranks after seeing a machine shop struggle with balancing one (off by 30 grams). I'm told the Callies is the best.
Thread Starter
Racer
Joined: Jul 2005
Posts: 381
Likes: 0
From: bluff city tn.
just checked head bolt hole with a bore scope looks like about like 4 threads missing on one side a perfect hole not a crack 
hole might have been there since new i am going to use it. going to install head studs not going to use bolts. thanks for all the input about the stroker maybe later 
hole might have been there since new i am going to use it. going to install head studs not going to use bolts. thanks for all the input about the stroker maybe later
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Originally Posted by pianoprodigy
I plan on going the 402 route in a few months. Where do Lunati cranks fall in the rankings? A very knowledgeable friend hates Eagle cranks after seeing a machine shop struggle with balancing one (off by 30 grams). I'm told the Callies is the best.
My motor was fixed under warranty and that is when i upgraded to a 427 C5R Motor using a new lunati 4.00 crank and that motor performed flawlessly up to the day i sold it in my 98 Roadster 10 months ago and its still runing strong!!!
FYI, My 427 Iron motor 98 C5 Vert was a weekend warrior and the extra 90 lbs never bothered me and only made the front end sit a little bit lower and i did notice a difference in handling but i know for many C5 guys the extra weight is unacceptable but to me no big deal!!
Pro
Joined: Aug 2005
Posts: 655
Likes: 1
From: Seminole FL
St. Jude Donor '12
Originally Posted by BLOWN ECS Z06
Lunati and Callies are right there as number 1 and 2 LSX cranks. I myself think the 4.0 Lunati crank is king as i had a BRAND SPANKIN new 4.125 Callies Crank FREAKIN BREAK on me on my old professionally built 408 ironblock 427 motor. Was built by a TOP TUNER HERE and the crank welds broke and reluctor wheel failed so I would never touch CALLIES again in a LSX application, but that is just b/c of my bad experience, etc.
My motor was fixed under warranty and that is when i upgraded to a 427 C5R Motor using a new lunati 4.00 crank and that motor performed flawlessly up to the day i sold it in my 98 Roadster 10 months ago and its still runing strong!!!
FYI, My 427 Iron motor 98 C5 Vert was a weekend warrior and the extra 90 lbs never bothered me and only made the front end sit a little bit lower and i did notice a difference in handling but i know for many C5 guys the extra weight is unacceptable but to me no big deal!!
My motor was fixed under warranty and that is when i upgraded to a 427 C5R Motor using a new lunati 4.00 crank and that motor performed flawlessly up to the day i sold it in my 98 Roadster 10 months ago and its still runing strong!!!
FYI, My 427 Iron motor 98 C5 Vert was a weekend warrior and the extra 90 lbs never bothered me and only made the front end sit a little bit lower and i did notice a difference in handling but i know for many C5 guys the extra weight is unacceptable but to me no big deal!!
