400 build question
#1
Member
MASTER JOURNEYMAN
Thread Starter
Join Date: May 2003
Posts: 35
400 build question
I have a 400 block cast number "817" and I was wondering if it would be worth using? I heard that the "509" block would be better. I was thinking about a 377 or 406. It will be going in a 2800lbs S-10, glide, 9" with 4.88 gear and a 32x17.5 tire. I am not too sure about valve train or top end right now, but any suggests would be great. If you need more info please let me know. I am look to run mid 6's in the 1/8. Thanks.
#3
Senior Member
EXPERT BUILDER
Join Date: Nov 2003
Location: NORTHEAST
Posts: 290
Re: 400 build question
Originally Posted by gullion454
I have a 400 block cast number "817" and I was wondering if it would be worth using? I heard that the "509" block would be better. I was thinking about a 377 or 406. It will be going in a 2800lbs S-10, glide, 9" with 4.88 gear and a 32x17.5 tire. I am not too sure about valve train or top end right now, but any suggests would be great. If you need more info please let me know. I am look to run mid 6's in the 1/8. Thanks.
#4
Senior Member
MASTER BUILDER
Join Date: Jul 2006
Posts: 184
If you use it, definately fill it to the bottom of the water pump with ROKblok block filler, by far the best and easiest block filler to use, just make sure you follow directions, mix it soupy, and work fast, as the stuff WILL set up really quick. I would also definately have 4 bolt splayed caps installed. Which, then at that point, a SHP block from Dart, may be the way to go, then you can skip the block filler. I personaly won;t use stock 400 blocks anymore, for anything more than 450hp street engines.
Frank
Frank
#5
Member
JOURNEYMAN
Join Date: Jan 2008
Location: Newcomerstown, OH
Posts: 33
I am also looking to build a 400. I have a question with rod length. What are the pros and cons for the 5.7 and 6.0 rods? I know it will change the pin height in the piston. Which is the safest, reliable choice. My motor will see 150hp shot of nitrous occasionally also.
#6
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
Originally Posted by prostreet1972
I am also looking to build a 400. I have a question with rod length. What are the pros and cons for the 5.7 and 6.0 rods? I know it will change the pin height in the piston. Which is the safest, reliable choice. My motor will see 150hp shot of nitrous occasionally also.
JMO
Zip.
#10
Member
MASTER JOURNEYMAN
Join Date: Mar 2006
Posts: 37
434 in a stock block with 6 inch rods..and NO BLOCK FILLER EVER!!!..metal must expand when it gets hot, if you fill the block that is where split cylinders come from car runs 5.70s with 1.21 and 1.22 60fts and weighs 2880 with me in it and has 7 years of running on the block and have had many engines and block last alot longer than that...don't believe all the internet hype