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Matt Shaff's Engine Shop / hprsepower limit of 392
« on: February 04, 2014, 05:28:45 PM »
Working to get a hemi in my old battlewagon.
USE - Bracket type, oldy racing.
CAR - 1960's altered, hardtail, 125". Using powerglide.
- Most the cars in the club have about 700 hp.
I need the engine to be as dependable as possible (I just don't have the time or money to blow up even one hemi)
ENGINE STUFF I HAVE -
- .060 392
- Couple good std. cranks
- HotHeads aluminum heads
- Good blown alchohol roller cam
- vertex
- 6-71 non-stripped
- Bugcatcher
SO HERE'S MY QUESTIONS:
1- What's the horsepower limit of a 392 w/ 4bolt caps and stock crank? By that I mean what's the limit where it is still very dependable?
2- To produce 700 hp do I need to concern myself with a stroker crank or fancy blower? (although an offset grind w/ Chevy rods is easiy enough).
3-It seems every hemi guy I've ever talked to says that race engines must have aluiminum rods. Go to a doorslammer site and they make a lot of power on steel rods. At 700 horsepower is there any reson I can't use the K1 steel rods? What about even Eagles?
4-If aluminum really soaks up shock then what about alumimum main caps and steel rods? Do you even get that much shock and vibration in an engine that's not nitro?
I know that's alot but I appreciate the help.
USE - Bracket type, oldy racing.
CAR - 1960's altered, hardtail, 125". Using powerglide.
- Most the cars in the club have about 700 hp.
I need the engine to be as dependable as possible (I just don't have the time or money to blow up even one hemi)
ENGINE STUFF I HAVE -
- .060 392
- Couple good std. cranks
- HotHeads aluminum heads
- Good blown alchohol roller cam
- vertex
- 6-71 non-stripped
- Bugcatcher
SO HERE'S MY QUESTIONS:
1- What's the horsepower limit of a 392 w/ 4bolt caps and stock crank? By that I mean what's the limit where it is still very dependable?
2- To produce 700 hp do I need to concern myself with a stroker crank or fancy blower? (although an offset grind w/ Chevy rods is easiy enough).
3-It seems every hemi guy I've ever talked to says that race engines must have aluiminum rods. Go to a doorslammer site and they make a lot of power on steel rods. At 700 horsepower is there any reson I can't use the K1 steel rods? What about even Eagles?
4-If aluminum really soaks up shock then what about alumimum main caps and steel rods? Do you even get that much shock and vibration in an engine that's not nitro?
I know that's alot but I appreciate the help.