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| Project 3400 Roller Cam Block (Page 73/82) |
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La fiera
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JUN 02, 10:35 PM
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Are you giving up on the 3.4 PR?? Come on Lou!!! You are my inspiration dude!! One of the things that I made me do my 3.4 is that you never lost hope!! Come on man!!
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lou_dias
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JUN 05, 03:52 PM
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LOL I think you are confused. My 3.5 will be a 3400 block bored to 3.7" with iron heads.
3.4 and 3400 pistons are similar but the 3400 pistons have a deeper dish...as do 3500(non-VVT) pistons. Hence I will use longer rods and shave down the top of the pistons to lower the dish dept to compensate for the longer rod. 2.8 flat top pistons can support .510" of lift and luckily, there is a roller cam available from WOT-Tech with that lift.
Longer rods will increase dwell-time near TDC. Allow for a higher revving bottom end as the angle of rod deflection is reduced.
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La fiera
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JUN 05, 06:57 PM
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| quote | Originally posted by lou_dias:
LOL I think you are confused. My 3.5 will be a 3400 block bored to 3.7" with iron heads.
3.4 and 3400 pistons are similar but the 3400 pistons have a deeper dish...as do 3500(non-VVT) pistons. Hence I will use longer rods and shave down the top of the pistons to lower the dish dept to compensate for the longer rod. 2.8 flat top pistons can support .510" of lift and luckily, there is a roller cam available from WOT-Tech with that lift.
Longer rods will increase dwell-time near TDC. Allow for a higher revving bottom end as the angle of rod deflection is reduced. |
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Oh ok! LOL. I was going to get longer rods for mine but I decided not to. I have .533 lift on mine with DOHC pistons and the crown sticks out of the deck about .050 or so and I don't have a problem with interference. My 2.8 had flat tops and I had .512 lift and never had a problem either.
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Blacktree
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JUN 05, 08:58 PM
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^^^ That's good to know. I'll be using 3.4 F-Body pistons, which have a slight dish on top (about 0.1" deep). So that should give lots of valve clearance!
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lou_dias
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MAY 26, 04:13 PM
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Had some axle-snapping fun yesterday. Made it to final race and snapped an axle on launch. End up with 2nd place trophy. First event of the season.
Also first race after switching to E85 and picking up 10 rwhp and 12 ft*lbs[This message has been edited by lou_dias (edited 05-26-2019).]
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Will
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MAY 28, 09:22 AM
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What tires are you running in the front?
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La fiera
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MAY 28, 09:54 AM
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| quote | Originally posted by lou_dias:
Had some axle-snapping fun yesterday. Made it to final race and snapped an axle on launch. End up with 2nd place trophy. First event of the season.
Also first race after switching to E85 and picking up 10 rwhp and 12 ft*lbs
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Way to go Lou!! Nice Job!
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lou_dias
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MAY 28, 08:05 PM
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Thanks!
Here is the whole event in it's axle-snapping glory!
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lou_dias
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MAY 30, 06:53 PM
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Is this #6 since 2009? I've lost count...
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lou_dias
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MAY 31, 10:30 AM
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Last month's not-done-tuning yet dyno:
After this I discovered someone had regapped my plugs back to .060 hence the misfires (are down to .050" now) and I also made some adjustments to lean out the top end some more but I haven't had a chance to go back to the dyno yet to "record" the results. Though the axle-snapping performance is telling...
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