Good morning everyone. I was hoping to get a bit more information on the two aftermarket 4 barrel intakes I see available for the Y. I called Mr. Mummert at the beginning of the week and unfortunately, he's a few weeks out on intakes. I've seen the blue thunder available on ebay, but it's considerably more expensive than the mummert. Is this price difference justified? Thanks in advance.

Daniel has touched on this but I’ll give more detail.  Factory (OEM) and MSD distributors work okay on the Blue Thunder intake manifolds.  I do not recall having an issue with the Pertronix distributors with the Blue Thunder intakes in the past but there’s not a Pertronix distributor here right now to verify that.

The TSP and CRT distributors without the Thunderbird tach drive do sit lower than the TSP/CRT models with the tach drive.  Only on the Blue Thunder intakes does this create a problem in that the TSP/CRT distributor cap hold down clamps are positioned such that the distributor has difficulty in having adequate rotational movement for timing purposes if positioning the distributor so that the vacuum advance chamber is not turned towards the fire wall or rear bulk head.  The Thunderbird versions of this distributor with the tach drive have a higher positioned cap and clear that rear boss on the Blue Thunder intake manifold just fine.

I do get requests for the Blue Thunder intake instead of the Mummert intake due to the BT intakes having an appearance that will pass for ‘stock’.  A majority of Thunderbird owners are pro-Blue Thunder intake for this reason and especially when the intakes are painted to match the engine color. And Charlie has also brought up the heated crossover in the Blue Thunder intakes which is a plus for those who drive their Ys in cooler weather.

Lorena, Texas (South of Waco)

The BT and Mummert aluminum intakes are very similar in performance as cast.  I have ported probably 40 or more over the last 13 years for forum members and local guys.  Here is a picture of the as cast flow figures for both of them.  I have seen 585 hp on Ted's dyno with both after porting on high performance builds.  Joe-JDC

JDC