hey everyone, I've been looking at this trickflow top-end kit from summit...

http://www.summitracing.com/parts/TFS-K304-430-400/

of course I would get the computer re-tuned afterward, but I was wondering about fuel injectors...stay stock? if not, how would I figure out what size to run? any other suggestions of what to replace/upgrade while doing this head/cam swap?

1 more thing, with 1.6 RR's, will any lt1 valve covers online have enough clearance for these? or do should I look for specific covers that are tall enough? thanks in advanced

 

If they are indicating its 430HP at the flywheel, you can get a lot more HP simply by getting your stock heads done by LE or AI, and getting their recommended cam. They can get you closer to 500HP at the flywheel.

To get your minimum injector size, multiply the flywheel HP by 0.07

430 HP x 0.07 = 30.1 (use 32 #/HR injectors)

Stock LT1 valve covers will clear 1.6X roller rockers, simply by crimping or cutting portions of the webs in the covers that support the center-bolts.

 

thats funny...because about 30 minutes after I made my post, I was looking at Lloyds heads/cam numbers, and those were alot more impressive for the price. I'm shooting for at least 400hp, so maybe the LE2 heads this cam: 230/234 .592/.592 111 LSA - 2200-6400 RPM

When his page says 2200-6400 rpm, does this mean it'll idle right around 2200? And thanks for the help figuring out what size injectors I'll need and the RR clearance issue.

 

No - that means the cam will produce decent torque over that RPM range. Idle would typically be 1,000rpm or less.

 

ok, thanks. because I like my idle right around 800...2200 seemed a bit crazy. Now with that being answered...with the range going up to 6400, would it be safe to shift at or around 6400 after the swap? Thanks again for the help injuneer.

 

As long as the valve train has quality components, you shouldn't have any problems running it up to 6,400 rpm. When you go with a cam with a higher RPM limit, you typically opt for higher numerical real axle gears to get the engine into the prime torque range faster.