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Get 52mm TB after heads/cam?

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Old 07-28-2003, 01:01 PM
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Get 52mm TB after heads/cam?

I know the biggest performance gain would be seen if I had a blower or forced induction of some kind but hasanyone dynoed changing tbs after heads/cam
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Old 07-28-2003, 01:06 PM
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We did a little testing up at www.woodbridgedynotech.com and in the same dyno session swapped a stock 48mm tb for a 58mm BBK on a car in the 465hp range. It was worth ~10rwhp if I recall correctly.
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Old 07-28-2003, 01:21 PM
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Yep, opened up before it went back together for a 58 in the future.
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Old 07-28-2003, 01:42 PM
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Was that 10rwhp at peak or across the whole powerband
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Old 07-28-2003, 02:05 PM
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From my understand on a regular 350 (not stroked or forced induction) getting a bigger TB really isn't worht the $$.....it's always debated here. I posted about 8 months ago the question (I think the title was "Bigger TB: WOrth it?" or something....do a search) and there was a TON of replies.
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Old 07-28-2003, 08:27 PM
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That was the gain at hp peak (not necessarily peak gain), but I do believe it gained a fair bit through the whole powerband, 6-10hp/lb-ft.
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Old 07-28-2003, 08:28 PM
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Thumbs up

Originally posted by SkarodoM
We did a little testing up at www.woodbridgedynotech.com and in the same dyno session swapped a stock 48mm tb for a 58mm BBK on a car in the 465hp range. It was worth ~10rwhp if I recall correctly.
Thanks for the good info.

Ryan
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