Most CI and Compression to build a Procharger engine.

[5HEAD]

I have all the necessary parts except for the pistons to build my procharger engine. Do you think a 4.625 stroke and 4.50 bore would be too much for a F3 build

 

[F☆☆k yellowbullet]

What block height?I would cut stroke back to 4.250 max

 

[Maggifinn]

Friend is running 622ci and revs it to 7.600 with an F3
Deck height is your friend, pack as much meat as you can on top of the pin.
Depending on how hard you want to get at it, I would personally keep the compression at or tad below 11 on methanol.

 

[Bigtime]

small cubes high rpm will make more power

 

[Bigtime]

Long stroke and low rpm are detonation monsters

 

[F☆☆k yellowbullet]

Long stroke and low rpm are detonation monsters

I agree.Peak torque area is the most problematic area.I always launch above it and dont fall back near it.The best blower engs we have had were 4.00" -4.150 " stroke ..

 

[Bigtime]

If i launched at peak torque i would look like a fuel car

 

[shelby1]

<< 4.125 stroke here

 

[F☆☆k yellowbullet]

We use that stroke allot in blower stuff.^^^^