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Finally Dropping the 351w

  • Thread starter Thread starter kikz19
  • Start date Start date Nov 2, 2005

kikz19

New Member
Oct 17, 2005
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0
1
Nov 2, 2005
#1
  • Nov 2, 2005
  • #1
Hey Guys

Im getting ready to replace my tired old procharged 302 with a rebuilt 351. I am going to set it up with AFR 205 heads and getting a new lower manifold for my Trickflow R to match up to the new wider block. Everything else i am going to covert over. My question is how much power can I realisticly expect to achieve before I detonate the short block. I have been using a copy of the DynoSim software and have perfected a tune with these heads intake and a custom cam to just squeek under 500 hp with around 550 tq. I am planning to use the stock shortblock with the exception of the pistons. Im getting rid of the kb craq in favor of some probe srs pistons that I know wont have any valve clearance issues, and to take the compression ratio down slightly to utilize the procharger a little more. We all know that hp is one of lifes greatest addictions so I will have a hard time not putting a smaller pulley on this thing. How much power can I push before i have to start looking at a Dart block and a forged bottom end. Thanks
 

bluevenom867

I will have images of molesting stuffed animals in
Dec 15, 2003
1,704
1
0
St.Petersburg,FL
Nov 2, 2005
#2
  • Nov 2, 2005
  • #2
351W blocks are good to 600hp,early blocks...750hp.
 

kikz19

New Member
Oct 17, 2005
19
0
1
Nov 2, 2005
#3
  • Nov 2, 2005
  • #3
can the same be said for the stock crank and rods??
 

bluevenom867

I will have images of molesting stuffed animals in
Dec 15, 2003
1,704
1
0
St.Petersburg,FL
Nov 2, 2005
#4
  • Nov 2, 2005
  • #4
kikz19 said:
can the same be said for the stock crank and rods??
Click to expand...

Its up to you.

We were spining the stock crank and rods up to 6800 rpm's on a 150hp shot in a mild build 357 (.030 over 351W).The assambaly was balanced and had ARP rod bolts and KB pistons,this was in a early model 74' block.

I still got the short block in the shop,had about 2000 miles on it and showed no sings of wear.

We wear probably pushing 500+ hp on the shot,but its up to you wether or not you would trust the stock stuff at that level,or at higher rpm.
 

kikz19

New Member
Oct 17, 2005
19
0
1
Nov 2, 2005
#5
  • Nov 2, 2005
  • #5
thanks for the info
 
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