Whats Next?

[Paul Workman]

Originally Posted by KILLSHOTS

I feel like we're really hijacking Lee's thread here, but...

An LT1, without forced induction and with the stock cam but with head porting, aftermarket intake manifold and TB, catless headers and x-pipe, as well as computer and fueling mods, can definitely achieve similar numbers. In fact, with a meager investment of about $1000 in a Borla X-pipe, a flex-fuel kit and a tune and a tank of E85, an LT1 can easily exceed 500 crank HP.

Yeah-but!! Ya forgot to mention purchasing the LT1 initially (might add a few $$), ADD to that the computer and wire harness, interfacing it (?) with the CCM, etc., swapping it with the LT5, AND then whatever mods to then get the LT1 to 500+ NA...stuff like that.

Review & Re-focusing:

1. The "state-of-the-art" for a street-driven, stock-bottom/cammed LT5 is (already) 510+ chp
2. Cammed but still streetable the 350 cid LT5 is about 557 chp (Pete's example)
3. The single runner, cammed Phase-II 350 cid LT5 made approx. 550 chp
4. 540 chp is readily available w/ stock cammed LT5s sporting 368 cid (10 cid less than that LT1 example)

An improvement over these (above) established benchmarks would have to be approx 10%+ in order to clearly put the results above questions arising from test-related variances. In that regard, (as I see it) Lee's experiment started out in the hole, relative to currently established benchmarks (above).

ITB, split plenum, or some other established NA approach may yield that 10% NA improvement (from air induction only) are possibilities with results yet to be seen(?).

The elephant(s) in the room is forced induction - above displacement. Not dismissing displacement or the chance for eking out a few more ponies from NA, but what interests me is exploring a "cost efficient" blueprint to a SC for the LT5.

Originally Posted by KILLSHOTS

I was just reading last night about a similarly-modded Stingray on drag slicks dropping into the 10s.

And, (with all due respect) far as time-slip comparisons go; comparing different cars, different weights and weight distribution, different displacement, different gearing, etc, in attempt to make a comparison between the new LT1 and LT5 all combine to (as statisticians say) "increase the % of ambiguity to the point of irrelevance" (at least as far as this tread goes).