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Author Topic:   Short Block
dirtTurd
Dirt Maniac

Total posts: 115
posted April 25, 2005 04:37 PM  
Where is the best place to buy short blocks?
thanks

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted April 25, 2005 05:19 PM  
JRM or PTM...
Depends on what your looking for. If you own a ring compressor, ring filer, and torque wrench you can order a rotating assembly and do it yourself for about half the cost, and you can take them a block too, have it cleaned and bored/honed the whole 9 yards.

dirtTurd
Dirt Maniac

Total posts: 115
posted April 25, 2005 06:35 PM  
Does either one have a web site?

thanks

WesternAuto17
Dirt Forum Champ
Total posts: 569
posted April 26, 2005 06:58 AM  
You can't build a motor for what JR sells them for -- http://www.jrmotorsports.com/

Also, go to www.racersauction.com there's a distributor selling JR motors for a lot less than direct from JR.

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted April 26, 2005 07:15 AM  
Westernauto
Beg to differ
When I bought my Shortblock from them, classic series with 2 valve releif pistons, X rods, GM crank, 108 cam it cost me around 1250,
They sell that rotating assembly for somewhere around 650-699 W/O cam, timing chain and Cam plate and button. A block will take ya 150-200 bux to have worked up and new cam bearings installed. And the distributor is actually JR's under another name. I will say that if you don't have the time, or don't have the tooling or skills, but have the money then buy from JR's, just pulled mine apart last night and afterr 30 some nights everything still looks great.

Westernauto, one thing you can't build cheaper than you can buy is there GM Casting Heads. I also bought a set from them, and have only broken 2 rocker arm studs (my fault)

shadowsarge
Dirt Full Roller

Total posts: 60
posted April 26, 2005 07:45 AM  
PTM's website is www.ptmraceengines.com
pretty much the same combo and prices as JR

------------------
No Guts - No Glory, STAND ON IT !!

dirtTurd
Dirt Maniac

Total posts: 115
posted April 27, 2005 05:57 AM  
thanks for all the replies i am still doing homework on this engine.

dirtzone
Dirt Maniac

Total posts: 102
posted April 29, 2005 05:12 AM  
Xtreme12x, which JRM block did you have? I was looking to get a 355 dome but didn't know if it would last up around 6500 rpm with a balance. What is your opinion?

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted April 29, 2005 06:46 AM  
My JRM Shortblcok was a Flat top 355, JRM Stock Re-Built rods, JRM Re-Ground Crank, All Balanced, pushed 6500-6800 most nights, turned up to 7500 one night (Big track, lots of consistent RPM)

Like I said, good motor BUT, I can build what I bought for Half price through them

WesternAuto17
Dirt Forum Champ
Total posts: 569
posted April 29, 2005 07:03 AM  
You are correct, Xtreme, especially for the 350's. I have run the 406 and will run a 383 this year, so that was my perspective. I guess I also am speaking from the perspective of someone who is not a master engine buider. I can't afford to make a mistake putting a motor together and grenade the bad boy.

If you've got the skills to put it together and have it live, more power to you. If you don't (like me), JR's a pretty good deal.

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted April 29, 2005 07:09 AM  
I was more than happy with mine, so I think everyone else will be the same way.

dirtzone
Dirt Maniac

Total posts: 102
posted April 29, 2005 07:54 PM  
thanks for the opinions. my deal is lack of expertise and time. that's where I would rather leave it to folks that do it all the time. i agree, though, some $ could be saved doing it yourself.

[This message has been edited by dirtzone (edited April 29, 2005).]

dirtTurd
Dirt Maniac

Total posts: 115
posted April 30, 2005 09:15 PM  
Has any one used dyno-flo engines? any pros or cons?
thanks

[This message has been edited by dirtTurd (edited April 30, 2005).]

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