Visit The Dirt Forum for More Information

Author Topic:   Tell me about stock 400 in street stock.
JT54
Dirt Maniac

Total posts: 170
posted November 28, 2004 08:09 PM  
I have a stock 400 and someone just gave us a set of flat tops for stock length rods ....I know longer rods are the way to go but this is for my kids first car and I am going the cheapest rout right now.....I need to know if stock length 400 rods will hold up and if they create more of a heating problem than longer rods....3200 bl. street stock with dual plane manifold ,we dont plan on turning more than 6000 rpm......please let me know asap.....I can also make this a 5.7 377 for a little extra money ....we have the parts already.

JT54
Dirt Maniac

Total posts: 170
posted November 29, 2004 11:45 AM  
I know someone can give me some info on this ,come on guys !!!

BrianW
Dirt Freak

Total posts: 385
posted November 29, 2004 12:03 PM  
What are the limits? The stock rods will be fine reconditioned with good bolts... Are you limited to flat-top pistons or is it a compression limit? Street stock so I assume "stock" parts - here's a combo - the 400 zero decked, flat-tops, vortec heads cut for more lift, milled about .080 or so, good solid lifter cam to match your intake and exhaust restrictions...

Need to know more about the rules around it..

JT54
Dirt Maniac

Total posts: 170
posted November 29, 2004 09:26 PM  
Thanks for your reply ,we cant run roller rockers ,any size hydrolic cam ,any dual plane manifold (no torque link).....here is my dillema I have a set of speed pro flat tops that were given to us ....I have a good set of balanced 5.7 x rods and a steel gm crank so I could make a 377 but it would cost a little more....but I know it would stay togeather for a while......I have a stock 400 and all I need to do is recon the rods balance and throw the new pistons on it....we have a performer intake that was also given to us ,the heads are some camel humps with 202 /160 and good springs dont know if they have been milled......I have been running mods for years and have always used good after market stuff in my engines and now it is time for the kids to get started with out breaking the bank .....because of my inexpeirience with the stock stuff I thaught I might ask what peoples opinion was ,before I put togeather a ticking time bomb......also I think the 400 would be a better engine for a big heavy street stock (3200 lb and 53% rear)on 1/4 mile High bank track .....tacky heats and dryslick mains....any input is appreciated...thanks JT.

Eljojo
Dirt Forum Champ
Total posts: 968
posted November 30, 2004 04:54 AM  
First year I ran dirt I built a nice 6" rod 406. I Had my motor man fix me a set of "humps" with 2.02's and 1.6's, angle milled to 58cc's. I (thru my own stupidity) blew it up about half wat thre the season. Another buddy loaned me his 355 which wasn't really much more than "stock" with a very nice (little) cam. My lap times improved and I spent less time on the "hook." That was on a 4/10ths. You put your kid in an overpowered ride and you'll be jerking fenders and pulling frames! Especially on a dryslick 1/4 mile bullring where your thinking about mebbe a 6.33 or 6.50 gear. Let the boys get a season or two under their belts and then throw the ponies at em!
It's just my opinion---and you know what they say about opinions!
Good luck!
Jojo

JT54
Dirt Maniac

Total posts: 170
posted November 30, 2004 08:58 AM  
Do you think that a stock flat top 400 with a small cam would make to much torque and power.....or would the 377 be better ?....also we are going to run a 6.00 gear because that is what came with the car... should make it a slug with a smaller engine but I think a 400 would pull good ....need more opinions ....thanks for responding .

racerss10
Dirt Full Roller

Total posts: 31
posted November 30, 2004 09:18 PM  
i have ran the 400 with alot more gear than that i think with a 6.00 on a 1/4 mile it would be alright dependin on the cam he should have good traction and that helps on dryslick when ure learnin and want to hit the gas too hard.

BrianW
Dirt Freak

Total posts: 385
posted December 01, 2004 09:04 AM  
Given that you're limited to a smaller intake, and 'stock' type heads, and a hydraulic cam - The 377 would run out of breath where it likes to run in the upper RPM range - The performer manifold is designed for "idle-5500" RPM - the 377's like to run 7k or better to make power - and you're not going to get those kind of revs with a hydraulic lifter...

SO - build the 400, with the heads and flat-tops you can probably get away with running an agressive hydraulic cam and 92/93 octane pump gas... I'd target ~6-6200 RPM with the stock parts and manifold limitations you gave - pick a cam that will compliment it and he'll be able to get some seat time to learn for cheap... That's what it's all about anyhow...


JT54
Dirt Maniac

Total posts: 170
posted December 01, 2004 04:17 PM  
Thanks for the input guys ,thats what I was looking for .....a cheap way for the kids to have fun and learn.....I had not thought about the limited capability of the stock heads with a 377......thanks again.JT54

Back to the Archives