[Dubeckyj]

I believe he's talking about the 2.5L HSC I4, based off the 2.3 in the Topaz.

And yes, the latest year I can find is '90, which I believe would be MPFI. Are you trying to replace an engine? Would it be possible to swap the intakes onto an MPFI block?

 

[Dubeckyj]

+1 I'm over $4k getting a vulcan to 200hp. To squeeze that out of an HSC, you'll be looking at a lot more. It would be a ton cheaper and a lot more fun to drop a V6 SHO motor in.

 

[Dubeckyj]

I'm one of the moderators of TempoTopaz.com and will soon be taking over the Webmaster position. As such, i'm well familiar with that site. Glad that some of you guys over here now of it though

As far as horsepower goes, do the math. The 2.5L HSC motor is 153 cubic inches. A reasonably well thought out normally aspirated street motor can achieve 1.5 hp per cubic inch without a lot of fuss. This would equate to appr 230 hp based on 153 cubic inches. Since i'll be running a heavily modified & decked HSO ( High Specific Output ) head, flat top pistons, appr 10.5:1 compression, a custom ground cam ( .550 lift with a split pattern 224 / 230 duration @ .050 ), full roller rocker arms, a TRUE high pressure ram air system, aftermarket C&L MAF, larger Throttle Body, Ford Racing injectors, high volume fuel system with a variable pressure regulator, a custom designed header, no cat, a high flow straight through muffler, etc... my calculated output of 175 - 200 HP is actually pretty conservative.

As far as running a Vulcan goes, that would be a LOT more work. My car is already set up for the 2.3 HSC motor. As such, the longer stroke 2.5 motor is a drop-in.

Other than that, making 200+ hp out of a Vulcan would be cake. It could pretty much be done using factory Ford parts IF you know what to do. If you've spent $4K and you're just hitting 200 hp, not enough homework or shopping around was done. I've got less than $1K into my motor & that started with a brand new FoMoCo block in the crate with all of the aforementioned custom made parts. Then again, i've got two less cylinders that i need to buy parts for, only one head and a single exhaust system, so that could equate for slightly higher costs. Not $3K worth though.... Sean
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$400 for roller rockers, $320 for custom valves, $165 for UDP, I got a steal for $150 for both heads decked and 3-angle valve grinds. ~$250 to get the spring upgrade issues sorted out. $220 for my CAI. $125 for my '01 UIM and 'tec TB. SCT was $450 with tax here in Canada. $500 for dyno tune with another $100 for smoke test & wideband 02 bung installation. Spark plugs, break-in oil, gasket sets and new head bolts. $3k, then. It all adds up. I'd love to see you hit 200 on an HSC for under a grand.