TFS Old Style Tunnel Ram Plenum Spacer
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TFS Old Style Tunnel Ram Plenum Spacer
I got this tunnel ram from Lem many many moons ago. I thought it was going to get to run on the 840 hp 528" engine I dyno'd years back but we had some technical difficulties at the dyno session ( the builder forgot to surface the manifold so it didn't fit when Steve ( from Westch) and I went to swap it. Never made it back to the dyno)
Anyway, I've always thought the plenum to be kind of on the small side approx 290", so I made a spacer to increase the volume .
I "repurposed" some aluminum bar that was behind my dad's barn. I did the cutting and fitting, I had a friend weld it up and dad did the machine work ( on his antique Bridgeport). It started out at 2.5" tall and it was machined down to 2".
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All done and ready for some dyno testing on the 565 later this year. If it works well I'll clean it up and maybe make a revised version of it. I now have the plenum area measuring approx 500". We'll see how it runs against the new style TR. Target power is 7,200 for the new TR,

G-Code- Posts : 180
Join date : 2010-07-12
Curt, J.Toney, cool40, Mark Miller and Paul Kane like this post
Re: TFS Old Style Tunnel Ram Plenum Spacer
Johnny Holmes Lives!
dfree383- BBF CONTRIBUTOR
- Posts : 14675
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Re: TFS Old Style Tunnel Ram Plenum Spacer
I'd still love to have one on a build. Nice work!!!!
J.Toney- Posts : 382
Join date : 2009-08-18
Location : Kent CIty, MI
Re: TFS Old Style Tunnel Ram Plenum Spacer
Lem Evans wrote:Nice!
We'll see what happens here down the road. A/B test and see what happens.
It will be topped off with these guys that I sent off a couple month back. They showed up on Tuesday. C&J Engineering ( here in So Cal rebuilt two of my 1,050's: I had him rebuilt them to my order: Progressive linkage with a PV in the primaries.


G-Code- Posts : 180
Join date : 2010-07-12
Mark Miller and 2 wicked like this post

» Tunnel ram / plenum question
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» Old Style Trick Tunnel Ram Vs. New Style Trick Flow R Tunnel Ram
» Increasing Plenum Volume on TFS A460 Tunnel Ram? Cheap power or waste of time?
» Looking for a newer style A 469 Tunnel ram
» Carb spacers??
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