LT4 Conversion

[poormillionaire2]

Is the LT4 Conversion really worth the advertised 425+ hp for my stock 94Z? How much power would I actually get?

http://store.summitracing.com/defaul...=NAL-GMP3287-1

[Chevyracincamaro]

the couple people on here that i remember saying the did the LT4 conversion were over-joyed with the results. i dont know how much power you would get but everyone says its worth it...

[CORE402]

What summit says about the product is probably true. I mean you are getting what counts -->HEADS<--, cam, and intake. WOW, but that is a lot of money. Does AFR make heads for the LT1? They might be cheaper then those GM LT4 heads and I am sure they would make better power. $2300 I would expect a 500+hp motor not a mere 425. For my engine I could purchase the Holley systemax kit for an entire grand less then that and acheive the same power rating. That kit includes heads, cam, intake, and some other misc parts.

[poormillionaire2]

Originally Posted by CORE402

What summit says about the product is probably true. I mean you are getting what counts -->HEADS<--, cam, and intake. WOW, but that is a lot of money. Does AFR make heads for the LT1? They might be cheaper then those GM LT4 heads and I am sure they would make better power. $2300 I would expect a 500+hp motor not a mere 425. For my engine I could purchase the Holley systemax kit for an entire grand less then that and acheive the same power rating. That kit includes heads, cam, intake, and some other misc parts.

FYI - I found that the AFR heads I found are priced at $2500, just for the heads. http://www.proficientperformance.com...180_comp_legal

Do you know of any others sites that have the same or similar parts for less?

[drumcat]

I'm doing the LT-4 conversion to the lt-1 I have lying around...

[poormillionaire2]

Originally Posted by drumcat

I'm doing the LT-4 conversion to the lt-1 I have lying around...

You're gonna have to keep in touch and tell me how it goes. Where did you get the kit from and how much did it cost you? Are you doing the install yourself? Did you get any other upgrades like a heavy duty timing chain or upgraded injectors? Sorry for all the questions, just really curious.

[CORE402]

Wow stuff for new Chevys are insanely expensive. I dont know what to tell you man. I like LT1s and LT4 and all but man I am sure glad I have my good old fasioned Gen I SBC. I can tell you other head manufacturers but I am no LT1 expert.

[drumcat]

Originally Posted by poormillionaire2

You're gonna have to keep in touch and tell me how it goes. Where did you get the kit from and how much did it cost you? Are you doing the install yourself? Did you get any other upgrades like a heavy duty timing chain or upgraded injectors? Sorry for all the questions, just really curious.

I will most likely order it on monday or tuesday, I saw the conversion kit in the last Summit catalog. Yes, my dad and I will install it our selves

[poormillionaire2]

Are you gonna put your car on the dyno before and after you complete the install to see how much power it was actually worth?

[KaotiKCamaro5]

im thinking about having it done if i get the Trans Am this spring.. i just wanna be able to hang with the big dogs.. (formula and hypsi) i'll likely get the kit from Summit as well..

[poormillionaire2]

I'm too lazy to do a search but I think that summit is one of only a few places that have the kit. Isn't the LT4 only offered by GM?

[KaotiKCamaro5]

as far as i know.. but you can likely pick it up from someone else.. i've seen people selling the parts on ebay.. however i have never seen the full kits on ebay..

[drumcat]

Yeah I'll try and find a place around here where they can test it at the crank because this engine isn't going into the RS I have now

[SMOKEY818]

i've heard that the lt4 conversion was overrated & it would be better to just supercharge your maro and you'd end up happier

[Chevyracincamaro]

i think that the conversion would be more economical than forced induction. he wont have to build up the rotating assembly with the conversion. plus, if you do the conversion and later on supercharge, then you would really see results...