SBF into 1983 Rx7, Drag car

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Old Jun 24, 2005 | 08:25 PM
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From: Kelowna, B.C. ,Canada
SBF into 1983 Rx7, Drag car

Here are some pics and info, http://www.cardomain.com/ride/1855792/4
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Old Jun 25, 2005 | 10:36 AM
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Nice, but ditch the carb and intake. A single 4 on a victor will make more peak power and alot more power over the entire curve.
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Old Jun 25, 2005 | 10:30 PM
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well we put that intake on because of the cam and pistons we are going to be putting into it soon(12.5:1, and the lift of the cam was over .650 and it had massive duration, i can't remember what exactly i will go look in a sec.) We ran it today with massive tire slip(crappy stock car tires lol) and it still ran a 7.9 at 91 mph pretty good for at over 4000 ft. Next year we are going to run a 250 dual stage shot, and get some proper tires under her. Also needed is a higher stall converter up closer too 4500-5000 it stalls right now at about 3200-3300 which is way to low but we still spin tires launching from that
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Old Jun 25, 2005 | 11:43 PM
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302 Rx-7

What kind of headers are those shown in the pictures? Thanks, DICK.
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Old Jun 26, 2005 | 09:21 AM
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Originally Posted by Dick Elliott
What kind of headers are those shown in the pictures? Thanks, DICK.
did you ever sell the first gen or are you gonna do the sbf conversion?
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Old Jun 26, 2005 | 04:49 PM
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Rex Will Rise Again

Still got it. Buying parts every day to make it into a IT-A Hill climb / SOLO 1 car. Still located in Elm Springs. DICK
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Old Jun 27, 2005 | 01:02 AM
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I will go check with my father who did most of the engine swap, i am pretty sure they are truck headers, i know the passenger side fit right in but to drivers side needed a bit of work done to it, for motor mounts we used old ford econoline van motor mounts and welded em in place.
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Old Jun 28, 2005 | 12:32 PM
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I think with a more modern Victor Jr intake single plane manifold you will pick up some power. Unless you are spinning crazy RPM (beyond 7500rpm) that tunnel ram is outdated.

A C6 sucks up about 30-40hp vs. running a C4 due to parasitic drag from heavier internals plus they are portly trannies...

Other than look looks like a fun car.
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Old Jun 28, 2005 | 02:43 PM
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well we had a c6 that was just rebuilt so we figured we would use it instead of going out and buying a c4, same goes with the tunnel ram. Although this one has much shorter and smaller runners then any other tunnel ram i have seen
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