Hello all!

Does anyone out there have any numbers on the 335 engine kit provided by Powerhouse (or anyone)? Project Silver Streak used this engine, and I never got to read or hear about the final performance numbers at the flywheel. Is is because the final gains were not that great, even for a daily driver? Was this project just a load of

I would like to know of some experience before I sink any $$ into this project. It sounds great , but considering that I have heard nothing, I am skeptical.

Thanks for your time!

 

well chevy hi performance did an article on it and claimed 115hp increase with fuel injection meaning tpi. the claim is on engine kits.com where they have the ad for the 305 stroker kit. check it out!

 

Thanks! I got their blurb when I asked for their catalogue (aka photocopied sheets stapled together). The numbers advertised are great, but I was also wondering about drivability, where the performance gains were along the curve, max troque@what rpm, etc. Do you remember the issue that Chev Hi Perf did the review?

Thanks again for your reply!

 

oh i have no idea off the top of my head, but i believe it mentioned it on their website with the ad they have on the 305 stroker kit, check that out , april 1999 sticks out in my head but i'm not positive, check the site. good luck

 

Found it. It is acutally Super CHevy, March 99. Thanks...

 

Without headers, the increased cubes aren't going to do anything for you. Without a cam change, you aren't going to get much of an increase, either. And, the key to real horsepower is the heads.

Adding 150 HP with headers, cam, & heads is a piece of cake.

Oh, that's with a 305 - don't even have to touch the shortblock.

Don't forget the 335 requires externally balanced-type flexplate & harmonic damper, just like a 383. Externally-balanced flexplates are typically 168 teeth - getting a starter to fit will probably require a ministarter, just like a 383. The block will also require some clearance grinding, just like a 383. For an extra $800-1000 for the 335 stuff, you'll gain about 25 HP over a 305 with the same headers, cam, & heads.

Why would you want to do that? To be "different"? For that extra $1000, you could do all that and turn a 350 into a 383. Now you're talking about 100-120 HP over the similarly-modded 305. Sounds like a much better bang-for-bucks approach.

I'm saying all this based on my own research last year about this time when I was planning my LG4 upgrade. When I approached a local performance machine shop about boring my 305 (I planned on doing the clearancing myself), the owner told me he could sell me a roller-cam 350 block, machine it, and sell me a 383 rotating assembly for the same price I'd have to pay for machining my 305 block and buying the Powerhouse rotating assembly.

Notice I didn't spend the extra $800-1000, settled for a very nice-running, streetable 305 instead.

 

i put a 335 stroker in a 92 z late last year. I will tell you the problems we had. You will have major clearencing problems, be prepared to spend lots of time grinding the block to accept that 400 stroke. also, we had so much problems with the rod bolts hitting the cam, we ended up advancing the cam so the lobes wouldnt hit the bolts. We ended up having to have it balanced with the 305 flywheel, the thing looked like swiss cheese after it was done. IMO, build a 350, its a hell of alot cheaper, and you will get more power. I helped a buddy of mine do the project for a guy we know. At first I asked, why a 335? His reply was to be different and it makes all sorts of tourqe. So i said ok ok. This guy spent all sorts of money on this car. edelbrock lower, SLP runners, i think he used the stock throttle body, S/R tourqer 2 heads, injectors,SLP Cam, edelbrock headers and cat back, roller rockers, underdrive pulleys, fast chip, stall shift kit, you name it this car has it. the car has been done now for several months and I have yet to ride in it. My buddy scott told me the thing was just insane fast, the tires couldnt hold the street. I am skeptical of his tales, he once told me of his galaxy 390 that roamed the streets, ANYWAY, I talked to another friend of mine(who's a ford boy)and said the thing wont pull hardly past 4500 or 5000, he said that he was not impressed at all. So i can not say personally if its fast or not. My thoughts are it cant be that fast, yeah I am sure it has all sorts of tourqe, but what TPI engine doesnt? If you want to spend lots of money, build a 350, hell even a 383 and put some good heads on it, I.E. AFR or trick flows. But its your money. hope this helps some, anything else I can help with let me know.
lil jay

 

WOW!

I've been asking for awhile on this one and finally some GREAT replies. Thanks!

Yeah, I wonder about the $$ of doing this vs just converting to the tried and true 350. I've just rebuilt/modded/tricked/played with one too many 350's, but then, there is a reason why it is so popular. A 383 is not for me, too much gas and too much power for street tires. This does have to be a daily driver and controllable in mountain roads.

That is why a 335 was interesting, a good motor for autocross type driving. It will rarely see the upper limits of the rpm range like a drag car, I am looking at more midrange power to throttle-steer out of corners. I was also wanting to keep emissions-legal (some people get fussy when the original engine is not there). Plus, I was curious to see what could be done. I guess idea 2 (ZZ4 with TPI) seems to be where I am leaning right now. ANy ideas/problems on that one would be great.

I'll spend the rest of the money on the interior and other toys.

Thanks for the replies!
:hail:

 

ZZ4 with TPI to support it will be pretty steep bucks, too, but the results will be more satisfying. You'll need better runners, ported base & plenum, AFPR, probably bigger injectors & TB.

For emissions, you'll need to plumb exhaust gases up to the base (like done on Vette TPI) for the EGR, since the ZZ4 heads don't have cross-over passages. Vette-style base is therefore a good idea.

 

Are you saying it is better to build up a Camaro L98 (cheaper and easier on emissions?)

 

Freshened up 350 shortblock, some nice aftermarket heads, cam to suit your intended use, exhaust, AFPR, base & plenum work, runners, perhaps TB & injectors - probably your best bang for the bucks.

 

building a 350 is cheaper period, and will make more power IMO than a 335. Theres no substitute for cubic inches, hence why I am building a 406. The 350 route is easier, you wont have to do clearance work like the 335. Again, thats just my .02