right now I am just getting ideas, but help if you can

This will be a street motor, with some mild bracket racing

2 bolt 1 piece rear main 350 bored .030 over
5.7 rods (stock?)
forged pistons, approx. 10-1 comp.
cast iron Bowtie heads, 2.02/1.60 valves 64 cc chamber
cam??--hyd. roller
roller rocker arms
TPI (at first, will probably go HSR)(what size injectors?)
Auto trans.(700R4)
converter??




Ok , what do you guys recommend for a cam and convertor?

how about a LT4 hotcam?

Any rough ideas on HP?



Thanks

 

lt4 hot cam is a good way to go if you want pass the sniffer test.Its alittle on the mild side.Well if you make good torque down low a nice 3200 stall will be good for a weekend racer.

 

Any other ideas then, for a cam?

I don't need to worry about a smog test here in Mich.,

so, any cam that may be a better choice?, also, ideas on HP?

 

ttt

 

one last try ............... ttt

 

The Bowtie heads are a poor choice. They are old technology. Out of the box they don't perform as well as other heads in the same price range. That is because they are designed as a starting point. They respond very well to porting, but that gets expensive. You would be better off with something like AFR's 195 head. A little more expensive than the Bowtie, but will outperform the Bowtie dollar for dollar, even when ported.

The LT4 Hotcam is nice, but is still a bit mild for a true performance application. If you plan on staying TPI with a smallish converter (<2500RPM), go for it. However, the HSR with a good converter like Precision Industries Vigilante 3000-3200RPM would do wonders with CC305.

If you're going to go and build a motor, do it right the first time. Don't skimp and sacrifice. You'll regret it later.

 

I have the bowtie heads already

how much do those other heads cost?and where can I find some specs?

 

how much are you looking to spend? your horsepower with that setup if everything was done right might be in the lt1 stock ls1 range but it depends.

building your engine around parts you have is a cost effective way to handle things but this hobby isn't really cost effective. true you want to get as much for your dollar as possible but you also need to realize that it costs to go fast so you have to comprimise in areas. be realistic with your budget and what you have to work with.

if you have a decent budget then pick a realistic horsepower goal and go from there. most good engine setups are built around the heads so it's important to start off right. i wish you luck as building an engine is no fun when budgets are concerned.

 

at the moment, I have no set budget, as I can wait till next year to put it together

those AFR heads sound good, how much do they run?

I can sell these bowtie heads if need be

I would like to see 400-450 HP if possible

 

www.airflowresearch.com for info on the heads. Do not buy the heads from AFR, you can get them from vendors for lesser cost, some even include shipping.

400-450 cannot be achieved with a TPI setup on Bowtie heads with the Hotcam - it just isn't going to happen. Even good heads and a good cam will be held back by the TPI.

If the AFR's are too pricey for you, a good PROVEN combo would be the Vortec heads modded with the cut pocket and better springs, with a Comp Cams roller or flat tappet Xtreme Energy cam. The XE 274 works well, and with the HSR, expect the HP you're looking for.

 

I was unaware that the HSR would bolt to vortech heads?

I still cannot find a price on the AFR 195 heads?
what is the currant price range on them?

 

Hey Dave!

I'd suggest buying a shortblock from one of the better known Engine Warehouses and work from there. A Stock rod/crank forged piston 355 or 383 could easily be under $2000 shipped maybe even with a warranty Then you could bolt your heads/TPI setup on that if you wanted... Or spend the money to convert to carb, run a sweet intake and crazy cam meant for RPM well past TPI territory Worked over bowtie heads with a Comp Xtreme Energy Roller grind 224/230 or 236/242(How much power do you want?). A custom converter from MidWest or Precision Industries would be from $500-$750 and I think they would reccomend something right in the 3000-3400 range. I'm not a big fan of Bowtie heads either but they have worked really well for others so they might be good for you too. Having them cleaned up especially on the exhaust side would be well worth it but then...You'd also have the "option" of new heads all together from AFR or Dart or Brodix, again depending on how crazy you want to get.

If you really want an EFI TPI setup on a new bottom end, I'd say do a Comp 304 grind with a 1.6 roller rocker with a 2400 Vigilante(again if they build it for your combo it'll be best and you can always send it back for when you swap to carb/AFR 227's/huge nitrous grind cam/jesel rockers/titanium rods-crank-valves-retainers-springs-and...uhhh oil pan... later man!

 

http://www.gaerteengines.com/sprint.html

Check that site out. I guess they do good work He'll probably cut you a deal too on a 410SBC

800hp what?

 

A professional porting job will help any of those heads. Give me a call if you need some work done. Visit the website.