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Search found 313 matches

by 1980RS
Thu Apr 15, 2021 10:17 am
Forum: Engine Tech
Topic: 416 heads vs iron l98 tpi heads
Replies: 9
Views: 406

Re: 416 heads vs iron l98 tpi heads

I think Jeff Swisher uses a lot of the 416 heads with great luck maybe he will chime in.
by 1980RS
Thu Apr 15, 2021 10:16 am
Forum: Engine Tech
Topic: small block mopar intakes
Replies: 14
Views: 574

Re: small block mopar intakes

Back in the mid-80's I had a Challenger with a hot 340 that had an LD340 intake and the car ran great up to 7200. I later found a used Strip Dominator for the 340 and it blew that LD-340 away was very surprised by that.
by 1980RS
Mon Apr 12, 2021 11:08 am
Forum: Engine Tech
Topic: Edelbrock 650 AVS2 going super lean at part throttle
Replies: 25
Views: 450

Re: Edelbrock 650 AVS2 going super lean at part throttle

I’m trying to figure out why this thing is so lean with a load on it at light part throttle acceleration, especially when going up a small hill at low speeds. Cruise afr is 13.8-14.2 range, WOT is 12.5-12.7. But, light acceleration (especially going up hills) goes as lean as 16.4-17.5 range, and I ...
by 1980RS
Fri Apr 09, 2021 3:08 pm
Forum: Engine Tech
Topic: Real Colector lenght doubt
Replies: 1
Views: 199

Re: Real Colector lenght doubt

I have run extensions form 6" to 3' and the only reason the long extension worked I think was the header had a collector that was way too big for the engine. When I switched over to a merge collector the car ran the same times as the long pipes and no extensions.
by 1980RS
Fri Apr 09, 2021 2:59 pm
Forum: Engine Tech
Topic: 5.3 circle track
Replies: 27
Views: 1229

Re: 5.3 circle track

What would be the ideal head for the 5.3 in this situation? 3/8 mile dirt track, Likely run a E-85 gas, such as what's available through VP race fuels. Max compression between 9.5:1-9.7:1 I would think E-85 would hurt an engine with low compression numbers like that over pump gas. Guys where I live...
by 1980RS
Thu Apr 08, 2021 12:17 am
Forum: Engine Tech
Topic: 5.3 circle track
Replies: 27
Views: 1229

Re: 5.3 circle track

If people think a stock 5.3 out of a 99-05 truck is going to walk away from a SBC 350 Vortec engine, that's a laugher in my book. :lol: Like many things in life, you have to read the rules. ANY stock LS head AND a 4bbl carb on the 5.3. SBC gets a 4412 500cfm 2bbl and a cast iron 2bbl intake. And th...
by 1980RS
Thu Apr 08, 2021 12:14 am
Forum: Engine Tech
Topic: 5.3 circle track
Replies: 27
Views: 1229

Re: 5.3 circle track

If people think a stock 5.3 out of a 99-05 truck is going to walk away from a SBC 350 Vortec engine, that's a laugher in my book. :lol: Like many things in life, you have to read the rules. ANY stock LS head AND a 4bbl carb on the 5.3. SBC gets a 4412 500cfm 2bbl and a cast iron 2bbl intake. And th...
by 1980RS
Wed Apr 07, 2021 8:30 pm
Forum: Engine Tech
Topic: Cheap Ebay SBC Retrofit Hydraulic roller lifters
Replies: 31
Views: 1250

Re: Cheap Ebay SBC Retrofit Hydraulic roller lifters

Like my NHRA race friend always say, "run it, if it blows up you know the parts were no good"
by 1980RS
Wed Apr 07, 2021 8:28 pm
Forum: Engine Tech
Topic: 5.3 circle track
Replies: 27
Views: 1229

Re: 5.3 circle track

If people think a stock 5.3 out of a 99-05 truck is going to walk away from a SBC 350 Vortec engine, that's a laugher in my book. :lol:
by 1980RS
Thu Apr 01, 2021 8:20 pm
Forum: Engine Tech
Topic: 062 Vortec Heads vs Large port 206cc Vortec Heads
Replies: 38
Views: 2020

Re: 062 Vortec Heads vs Large port 206cc Vortec Heads

I have a local racer that wants my 406 for his new '79 Firebird but thinks the 406 is only worth $1500, :lol: After the head swap I told him you can add a bunch more money to that offer. He's now looking at a 454 out of a motor home, I hope he has good luck with it.
by 1980RS
Thu Apr 01, 2021 8:17 pm
Forum: Engine Tech
Topic: Flowmaster Pro Series laminar flow mufflers?
Replies: 8
Views: 760

Re: Flowmaster Pro Series laminar flow mufflers?

I had Stupid 40's on my street car and it sounded like a big old dump truck, did not care for that and the droaning in the car. Took those off and have Hooker Areo Chambers on the car now, quiet inside the car and just as fast as the Flowmasters.
by 1980RS
Wed Mar 31, 2021 7:41 pm
Forum: Engine Tech
Topic: 062 Vortec Heads vs Large port 206cc Vortec Heads
Replies: 38
Views: 2020

Re: 062 Vortec Heads vs Large port 206cc Vortec Heads

Bob, I think I should have just bought your 400 VORTEC deal complete....... Block's in shop now, Pistons are hear, rods supposed to be in today. I'm using GM crank and block, ARP main studs and Ohio's 6" Street/strip rods. Pistons are Wiseco flat tops. Heads, just not sure? Jegs 195 or ATK 210's pr...
by 1980RS
Wed Mar 31, 2021 7:38 pm
Forum: Engine Tech
Topic: 062 Vortec Heads vs Large port 206cc Vortec Heads
Replies: 38
Views: 2020

Re: 062 Vortec Heads vs Large port 206cc Vortec Heads

I like the idea of track testing as well,can you give any information about the strip dominator as I have been doing one to go with my 180 darts. Is yours ported?? I have two 300-25's one is ported to a 1206 gasket pretty far in with the burr finish on it and the other is the 1205 gasket with a lit...
by 1980RS
Tue Mar 30, 2021 9:03 pm
Forum: Engine Tech
Topic: Speedmaster blocks....whats the skinny on these?
Replies: 54
Views: 4637

Re: Speedmaster blocks....whats the skinny on these?

bob460 wrote: Tue Mar 30, 2021 6:52 pm This is the "KABOOM" speedmaster block at it's best..... #-o

https://www.youtube.com/watch?v=_bVWVaxawvU
OUCH!
by 1980RS
Tue Mar 30, 2021 8:57 pm
Forum: Engine Tech
Topic: 062 Vortec Heads vs Large port 206cc Vortec Heads
Replies: 38
Views: 2020

Re: 062 Vortec Heads vs Large port 206cc Vortec Heads

I highly doubt a dud! I would consider Vortec heads if the had the duel intake bolt pattern as I read some did, so I could use my AFR intake? The way things are going the need to keep this car as stock looking as possible is the key. I would have to get the conversion kit to put the gen 1 valve cov...