LT1 valve sizes for FI
Thread Starter
Melting Slicks
Joined: Oct 2000
Posts: 2,158
Likes: 9
From: N.E. WA
LT1 valve sizes for FI
When I first started my 91 vette project, it was to be a "budget" 383 build up. I knew that I wanted some fairly serious power, but didn't have a lot to spend so I thought that I would use a LT1 block with LT1 heads (they flow better than 113's) and use a solid roller. The LT1 intake could also be had on the cheap and would be great for a high revver. Now that you have some history, I still haven't ported my stock LT1 heads, and need to get started. Keep in mind that I still don't have the money for big mods or aftermarket. All the porting will be done by me and that really isn't a problem. Should I use a 1.94 intake valve and a 1.60 exhaust valve to help get rid of spent air? The LT1 exhaust don't flow on par with the intake and it will be forced induction, so I thought I should up the exhaust valve size, even if it requires a new seat. What do ya think is the best bang for the buck?
Burning Brakes
Joined: Dec 2000
Posts: 1,023
Likes: 0
From: Marietta, South Carolina, USA
Re: LT1 valve sizes for FI (ANTI VENOM)
I would just keep the stock valves in because you will not gain that much buy going from a 1.94 to 2.0 and from 1.55 to 1.6 if you want to go bigger on the intake you will have to change all the seats, and since you dont have that much budget I would use it on other parts.
I dont know if the LT1 block will work for you, because the L98 and the LT1 are different blocks I would check on it good befor I would start.
Jay
I dont know if the LT1 block will work for you, because the L98 and the LT1 are different blocks I would check on it good befor I would start.
Jay
