402 top end rebuild '592/513' Rear wheel TFS, EPS
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402 top end rebuild '592/513' Rear wheel TFS, EPS
Just wanted to share the info of my top end rebuild. Last combo was 402 LS2 block, 13-1 with ported Dart 225's "2.05 valve" ported vic jr intake with a 4500 accufab, 2in ARH headers with 4in collectors and a 258/262 on 110 cam. Th400 with a ATI tree master 5500 stall and a 12 bolt with 4.33's on 28in slicks. I went to a ported Super Vic, TFS 245cc heads with 2.10 LS3 valves and a custom cam from Geoff at EPS. Compression and everything else stayed the same. Old power numbers 529/430, new power numbers are 592/513!! The power was still coming on at 7900rpm and yes this is a Hyd roller cam. We had to stop the pulls as the old slicks were vibrating like crazy at 139mph on the dyno. I want to thank Geoff at EPS for a killer cam, Gregg at TEA for the best cathedral head you can get, Mike and Nick at Straightline Performance for a excellent tune, and Tom at Speed inc for all the help with the parts and advice over the last 14 years, And Dave at CPC powder coating for all the great work and hydro imaging. Next up is some new slicks and a trip to the track to see if I have to have the converter tightened as its a ton looser now. Here are some pics and video.
https://www.youtube.com/watch?v=NSKA...ature=youtu.be
https://www.youtube.com/watch?v=NSKA...ature=youtu.be
Last edited by ONEBADWS6; 05-19-2014 at 09:41 PM. Reason: tags
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Well the TEA heads flowed more at .400 lift than my old heads did (312cfm). The cam was a major factor and the intake also was. This is a 63rwhp 83rwtq improvement on a th400 drag setup, aka a ton of motor horse power
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#9
NICE results Bill... Glad to see them 245s doing some work, them LS3 valves take RPM like a champ...
Might have to switch out that gear with all that powa...
Might have to switch out that gear with all that powa...
Last edited by chrs1313; 05-19-2014 at 10:42 PM.
#10
How big is the cam if you don't mind me asking? If not I respect that, just curious as I have hyd. 416 with gen x255 heads and and was wanting to compare to see where I'm going to be at?
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Thank you for the kind words guys. The cam is less wild on paper than the one it replaced but with ramp rates its bigger. The lobe is a EPS proprietary grind so the specs can be deceiving. 252/268 with under .620 lift.