Thoughts on this shortblock
Thread Starter
Staging Lane
Joined: Sep 2002
Posts: 72
Likes: 0
From: Georgia
Thoughts on this shortblock shortblock part # IRS-421-LS1S
Any thoughts/feedback good or bad is appreciated.
The price is hands down one of the best. The oil pump could use porting and the timing chain should prally be an SLP double roller. Anyone actually use this block?
Any thoughts/feedback good or bad is appreciated.
The price is hands down one of the best. The oil pump could use porting and the timing chain should prally be an SLP double roller. Anyone actually use this block?
On The Tree
Joined: Aug 2002
Posts: 184
Likes: 0
From: Crossville, TN
Re: Thoughts on this shortblock As far as the parts go you shouldnt have a problem. Rods and pistons are really the best out there. Not sure who's crank it is. Might want to ask them about it. Someone else will have to speak up for their machine work though since Ive never dealt with them.
Thread Starter
Staging Lane
Joined: Sep 2002
Posts: 72
Likes: 0
From: Georgia
Re: Thoughts on this shortblock I just called and spoke with someone and I was told that the timing chain is a double roller and that the pistons can be setup for any applications. They simply send JE the specs and then JE sends whatever dish or relief you need. He also said that this block uses the 30 over bore with the 4.125 crank so the actual cubes are 421.980045795 (close enough for me).
The person I spoke with (didn't get his name) was very knowledgeable and willing to answer any questions.
I have read somewhere else on this forum that the cranks basically all come from the same place then each vendor does their "thing" with them. If someone could post a link to that thread, that'd be awesome.
Anyone else?
The person I spoke with (didn't get his name) was very knowledgeable and willing to answer any questions.
I have read somewhere else on this forum that the cranks basically all come from the same place then each vendor does their "thing" with them. If someone could post a link to that thread, that'd be awesome.
Anyone else?
